src/Features/VisualBasicTest/EditAndContinue/ActiveStatementTests.vb - main - githubmirror/roslyn

src/Features/VisualBasicTest/EditAndContinue/ActiveStatementTests.vb
6 050 строк147 KB
Todd Grunke
Fix ArgumentNullException in VB Edit and Continue (#83250)
20 апр 2026, 22:53
20 апр 2026, 22:5368ce286
' Licensed to the .NET Foundation under one or more agreements.
' The .NET Foundation licenses this file to you under the MIT license.
' See the LICENSE file in the project root for more information.

Imports Microsoft.CodeAnalysis.Contracts.EditAndContinue
Imports Microsoft.CodeAnalysis.EditAndContinue
Imports Microsoft.CodeAnalysis.Emit
Imports Microsoft.CodeAnalysis.VisualBasic.Symbols

Namespace Microsoft.CodeAnalysis.VisualBasic.EditAndContinue.UnitTests
    <UseExportProvider>
    Public Class ActiveStatementTests
        Inherits EditingTestBase

        <Fact>
        Public Sub Update_Inner()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Shared Sub Main()
        While True
            <AS:1>Goo(2)</AS:1>
        End While
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Goo(2)"))
        End Sub

        <Fact>
        Public Sub Update_Inner_NewCommentAtEndOfActiveStatement()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>' comment
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Update_Inner_Reloadable()
            Dim src1 = ReloadableAttributeSrc & "
<CreateNewOnMetadataUpdate>
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = ReloadableAttributeSrc & "
<CreateNewOnMetadataUpdate>
Class C
    Shared Sub Main()
        While True
            <AS:1>Goo(2)</AS:1>
        End While
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Goo(2)"))
        End Sub

        <Fact>
        Public Sub Update_Leaf()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Shared Sub Main()
        While True
            <AS:1>Goo(1)</AS:1>
        End While
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a + 1)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Update_Leaf_NewCommentAtEndOfActiveStatement()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>'comment
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        ' <summary>
        ' CreateNewOnMetadataUpdate has no effect in presence of active statements (in break mode).
        ' </summary>
        <Fact>
        Public Sub Update_Leaf_Reloadable()

            Dim src1 = ReloadableAttributeSrc + "
<CreateNewOnMetadataUpdate>
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>System.Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim src2 = ReloadableAttributeSrc + "
<CreateNewOnMetadataUpdate>
Class C
    Shared Sub Main()
        While True
            <AS:1>Goo(1)</AS:1>
        End While
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a + 1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemantics(active,
                semanticEdits:=
                {
                    SemanticEdit(SemanticEditKind.Update, Function(c) c.GetMember("C.Main"), preserveLocalVariables:=True),
                    SemanticEdit(SemanticEditKind.Update, Function(c) c.GetMember("C.Goo"), preserveLocalVariables:=True)
                })
        End Sub

        <Fact>
        Public Sub Headers()
            Dim src1 = "
Class C
    Property P(a As Integer) As Integer
        <AS:7>Get</AS:7>
            <AS:0>Me.value = a</AS:0>
        <AS:8>End Get</AS:8>
        <AS:9>Set(value As Integer)</AS:9>
            <AS:1>Me.value = a</AS:1>
        <AS:10>End Set</AS:10>
    End Property

    Custom Event E As Action
        <AS:11>AddHandler(value As Action)</AS:11>
            <AS:2>Me.value = a</AS:2>
        <AS:12>End AddHandler</AS:12>
        <AS:13>RemoveHandler(value As Action)</AS:13>
            <AS:3>Me.value = a</AS:3>
        <AS:14>End RemoveHandler</AS:14>
        <AS:15>RaiseEvent()</AS:15>
            <AS:4>Me.value = a</AS:4>
        <AS:16>End RaiseEvent</AS:16>
    End Event

    <AS:17>Shared Operator &(a As C, b As C) As C</AS:17>
        <AS:5>Me.value = a</AS:5>
    <AS:18>End Operator</AS:18>

    <AS:19>Sub New(a As C, b As C)</AS:19>
        <AS:6>Me.value = a</AS:6>
    <AS:20>End Sub</AS:20>

    <AS:21>Sub F(a As C, b As C)</AS:21>
        <AS:22>Me.value = a</AS:22>
    <AS:23>End Sub</AS:23>

    <AS:24>Function G(a As C, b As C) As Integer</AS:24>
        <AS:25>Me.value = a</AS:25>
        Return 0
    <AS:26>End Function</AS:26>
End Class
"

            Dim src2 = "
Class C
    Property P(a As Integer) As Integer
        <AS:7>Get</AS:7>
            <AS:0>Me.value = a*1</AS:0>
        <AS:8>End Get</AS:8>
        <AS:9>Set(value As Integer)</AS:9>
            <AS:1>Me.value = a*2</AS:1>
        <AS:10>End Set</AS:10>
    End Property

    Custom Event E As Action
        <AS:11>AddHandler(value As Action)</AS:11>
            <AS:2>Me.value = a*3</AS:2>
        <AS:12>End AddHandler</AS:12>
        <AS:13>RemoveHandler(value As Action)</AS:13>
            <AS:3>Me.value = a*4</AS:3>
        <AS:14>End RemoveHandler</AS:14>
        <AS:15>RaiseEvent()</AS:15>
            <AS:4>Me.value = a*5</AS:4>
        <AS:16>End RaiseEvent</AS:16>
    End Event

    <AS:17>Shared Operator &(a As C, b As C) As C</AS:17>
        <AS:5>Me.value = a*6</AS:5>
    <AS:18>End Operator</AS:18>

    <AS:19>Sub New(a As C, b As C)</AS:19>
        <AS:6>Me.value = a*7</AS:6>
    <AS:20>End Sub</AS:20>

    <AS:21>Sub F(a As C, b As C)</AS:21>
        <AS:22>Me.value = a*8</AS:22>
    <AS:23>End Sub</AS:23>

    <AS:24>Function G(a As C, b As C) As Integer</AS:24>
        <AS:25>Me.value = a*8</AS:25>
    <AS:26>End Function</AS:26>
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*6"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*7"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*8"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*8"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*2"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*3"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*4"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Me.value = a*5"))
        End Sub

#Region "Delete"
        <Fact>
        Public Sub Delete_Leaf_Method()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
<AS:0>Class C</AS:0>
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Class C", GetResource("method", "C.Goo(Integer)")))
        End Sub

        <Fact>
        Public Sub Delete_All_SourceText()
            Dim src1 = "
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim src2 = ""

            Dim edits = GetTopEdits(src1, src2)
            edits.VerifySemanticDiagnostics(
                Diagnostic(RudeEditKind.Delete, Nothing, DeletedSymbolDisplay(FeaturesResources.class_, "C")))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Inner()
            Dim src1 = " 
Class C
    Shared Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Shared Sub Main()
        While True
        End While
    <AS:1>End Sub</AS:1>

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Shared Sub Main()", FeaturesResources.code))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Inner_MultipleParents()
            Dim src1 = "
Class C 
    Shared Sub Main()
        Do
            <AS:1>Goo(1)</AS:1>
        Loop

        If True
            <AS:2>Goo(2)</AS:2>
        Else
            <AS:3>Goo(3)</AS:3>
        End If

        Dim x As Integer = 1
        Select Case x
            Case 1, 2
                <AS:4>Goo(4)</AS:4>

            Case Else
                <AS:5>Goo(5)</AS:5>
        End Select

        While True
            <AS:6>Goo(4)</AS:6>
        End While

        Do Until True
            <AS:7>Goo(7)</AS:7>
        Loop

        If True Then <AS:8>Goo(8)</AS:8> Else <AS:9>Goo(9)</AS:9>

        For i = 0 To 10 : <AS:10>Goo(10)</AS:10> : Next

        For Each i in {1, 2} : <AS:11>Goo(11)</AS:11> : Next

        Using z = new C() : <AS:12>Goo(12)</AS:12> : End Using

        With expr 
            <AS:13>.Bar = Goo(13)</AS:13>
        End With

        <AS:14>label:</AS:14>
        Console.WriteLine(1)

        SyncLock Nothing : <AS:15>Goo(15)</AS:15> : End SyncLock
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C 
    Shared Sub Main()
        Do
        <AS:1>Loop</AS:1>

        <AS:2>If True</AS:2>
        <AS:3>Else</AS:3>
        End If

        Dim x As Integer = 1
        Select Case x
            <AS:4>Case 1, 2</AS:4>
            <AS:5>Case Else</AS:5>
        End Select

        While True
        <AS:6>End While</AS:6>

        Do Until True
        <AS:7>Loop</AS:7>

        <AS:8>If True Then</AS:8> <AS:9>Else</AS:9>

        For i = 0 To 10 : <AS:10>Next</AS:10>

        For Each i In {1, 2} : <AS:11>Next</AS:11>

        Using z = New C() : <AS:12>End Using</AS:12>

        With expr 
        <AS:13>End With</AS:13>

        <AS:14>Console.WriteLine(1)</AS:14>

        SyncLock Nothing : <AS:15>End SyncLock</AS:15> 
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Do", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "If True", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Else", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Case 1, 2", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Case Else", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "While True", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Do Until True", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "If True Then", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Else", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "For i = 0 To 10", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "For Each i In {1, 2}", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Using z = New C()", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "With expr", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Shared Sub Main()", FeaturesResources.code),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "SyncLock Nothing", FeaturesResources.code))
        End Sub

        <Fact>
        Public Sub Delete_Inner_ElseIf1()
            Dim src1 = "
Class C 
    Shared Sub Main()
        If c1 Then
            Console.WriteLine(1)
        <AS:1>ElseIf c2 Then</AS:1>
            Console.WriteLine(2)
        ElseIf c3 Then
            Console.WriteLine(3)
        End If
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C 
    Shared Sub Main()
        If c1 Then
            Console.WriteLine(1)
        <AS:1>ElseIf c3 Then</AS:1>
            Console.WriteLine(3)
        End If
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "If c1 Then", FeaturesResources.code))
        End Sub

        <Fact>
        Public Sub Delete_Inner_ElseIf2()
            Dim src1 = <![CDATA[
Class C 
    Shared Sub Main()
        If c1 Then
            Console.WriteLine(1)
        <AS:1>ElseIf c2 Then</AS:1>
            Console.WriteLine(2)
        End If
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
]]>.Value

            Dim src2 = <![CDATA[
Class C 
    Shared Sub Main()
        If c1 Then
            Console.WriteLine(1)
        <AS:1>End If</AS:1>
    End Sub

    Shared Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
]]>.Value
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "If c1 Then", FeaturesResources.code))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
    <AS:0>End Sub</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Leaf_InTry()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        Try
            <AS:0>Console.WriteLine(a)</AS:0>
        Catch
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        <AS:0>Try</AS:0>
        Catch
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Leaf_InTry2()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        Try
            Try
                <AS:0>Console.WriteLine(a)</AS:0>
            Catch
            End Try
        Catch
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        <AS:0>Try</AS:0>
        Catch
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Inner_CommentActiveStatement()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        'Goo(1)
    <AS:1>End Sub</AS:1>

    Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Sub Main()", FeaturesResources.code))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub Delete_Leaf_CommentActiveStatement()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        <AS:0>Console.WriteLine(a)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo(1)</AS:1>
    End Sub

    Sub Goo(a As Integer)
        'Console.WriteLine(a)
    <AS:0>End Sub</AS:0>
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Delete_EntireNamespace()
            Dim src1 = "
Module Module1
    Sub Main()
        <AS:0>Console.WriteLine(0)</AS:0>
    End Sub
End Module
"

            Dim src2 = "<AS:0/>"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.Delete, "", GetResource("Module", "Module1")),
                Diagnostic(RudeEditKind.DeleteActiveStatement, "", GetResource("method", "Module1.Main()")))
        End Sub
#End Region

#Region "Constructors"
        <Fact>
        Public Sub Updated_Inner_Constructor()
            Dim src1 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f As Goo = New Goo(5)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    Sub New(a As Integer)
        <AS:0>Me.value = a</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f As Goo = New Goo(5*2)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    Sub New(a As Integer)
        <AS:0>Me.value = a</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                                        Diagnostic(RudeEditKind.ActiveStatementUpdate, "f As Goo = New Goo(5*2)"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/741249")>
        Public Sub Updated_Leaf_Constructor()
            Dim src1 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f As Goo = New Goo(5)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    Sub New(a As Integer)
        <AS:0>Me.value = a</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f As Goo = New Goo(5)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    Sub New(a As Integer)
        <AS:0>Me.value = a*2</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Updated_Leaf_Constructor_Parameter()
            Dim src1 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f = new Goo(5)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    <AS:0>Public Sub New(Optional a As Integer = 1)</AS:0>
        Me.value = a
    End Sub
End Class
"
            Dim src2 = "
Class Program
    Shared Sub Main()
        Dim <AS:1>f = new Goo(5)</AS:1>
    End Sub
End Class

Class Goo
    Dim value As Integer

    <AS:0>Public Sub New(Optional a As Integer = 2)</AS:0>
        Me.value = a
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InitializerUpdate, "Optional a As Integer = 2", FeaturesResources.parameter))
        End Sub

        <Fact>
        Public Sub Updated_Leaf_Constructor_Parameter_DefaultValue()
            Dim src1 = "
Class Goo
    Dim value As Integer
   
    Shared Sub Main()
        Dim <AS:1>f = new Goo(5)</AS:1>
    End Sub

    <AS:0>Sub New(Optional a As Integer = 5)</AS:0>
        Me.value = a
    End Sub
End Class
"
            Dim src2 = "
Class Goo
    Dim value As Integer
   
    Shared Sub Main()
        Dim <AS:1>f = new Goo(5)</AS:1>
    End Sub

    <AS:0>Sub New(Optional a As Integer = 42)</AS:0>
        Me.value = a
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InitializerUpdate, "Optional a As Integer = 42", FeaturesResources.parameter))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/742334")>
        Public Sub Updated_Leaf_ConstructorChaining1()
            Dim src1 = "
Class B 
    Inherits A

    Sub Main
       Dim <AS:1>b = new B(2, 3)</AS:1>
    End Sub

    Sub New(x As Integer, y As Integer)
        <AS:0>MyBase.New(x + y, x - y)</AS:0> 
    End Sub
End Class
"

            Dim src2 = "
Class B 
    Inherits A

    Sub Main
       Dim <AS:1>b = new B(2, 3)</AS:1>
    End Sub

    Sub New(x As Integer, y As Integer)
        <AS:0>MyBase.New(x + y, x - y + 5)</AS:0> 
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/742334")>
        Public Sub Updated_Leaf_ConstructorChaining2()
            Dim src1 = "
Class Test
    Sub Main()
       Dim <AS:2>b = new B(2, 3)</AS:2>
    End Sub
End Class

Class B
    Inherits A

    Sub New(x As Integer, y As Integer)
        <AS:1>MyBase.New(x + y, x - y)</AS:1>
    End Sub
End Class

Class A
    Sub New(x As Integer, y As Integer)
        <AS:0>Me.New(x, y, 0)</AS:0>
    End Sub

    Sub New(x As Integer, y As Integer, z As Integer) : End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
       Dim <AS:2>b = new B(2, 3)</AS:2>
    End Sub
End Class

Class B
    Inherits A

    Sub New(x As Integer, y As Integer)
        <AS:1>MyBase.New(x + y, x - y)</AS:1>
    End Sub
End Class

Class A
    Sub New(x As Integer, y As Integer)
        <AS:0>Me.New(5 + x, y, 0)</AS:0>
    End Sub

    Sub New(x As Integer, y As Integer, z As Integer) : End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstanceConstructorWithoutInitializer()
            Dim src1 = "
Class C
    Dim a As Integer = 5

    <AS:0>Public Sub New(a As Integer)</AS:0>
    End Sub

    Sub Main()
        Dim <AS:1>c = new C(3)</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Dim a As Integer = 42

    <AS:0>Public Sub New(a As Integer)</AS:0>
    End Sub

    Sub Main()
        Dim <AS:1>c = new C(3)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstanceConstructorWithInitializer_Internal_Update1()
            Dim src1 = "
Class C 
    Sub New(a As Integer)
        <AS:2>MyClass.New(True)</AS:2>
    End Sub

    Sub New(b As Boolean)
        <AS:1>MyBase.New(F())</AS:1>
    End Sub

    Shared Function F() As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim <AS:3>c As C = New C(3)</AS:3>
    End Sub
End Class
"
            Dim src2 = "
Class C 
    Sub New(a As Integer)
        <AS:2>MyClass.New(False)</AS:2>
    End Sub

    Sub New(b As Boolean)
        <AS:1>MyBase.New(F())</AS:1>
    End Sub

    Shared Function F() As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim <AS:3>c As C = New C(3)</AS:3>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "MyClass.New(False)"))
        End Sub

        <Fact>
        Public Sub InstanceConstructorWithInitializer_Leaf_Update1()
            Dim src1 = "
Class C
    Public Sub New() 
        <AS:0>MyBase.New(1)</AS:0>
    End Sub

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Public Sub New() 
        <AS:0>MyBase.New(2)</AS:0>
    End Sub

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755959")>
        Public Sub InstanceConstructorWithInitializer_Leaf_DeleteBaseCall()
            Dim src1 = "
Class C
    Sub New() 
        <AS:0>MyBase.New(2)</AS:0>
    End Sub

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub New()
    <AS:0>End Sub</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstanceConstructorWithInitializer_Leaf_InsertBaseCall()
            Dim src1 = "
Class C
    <AS:0>Public Sub New</AS:0>
    End Sub

    Sub Main
        Dim <AS:1>c = new C()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    <AS:0>Public Sub New</AS:0>
        MyBase.New(2)
    End Sub

    Sub Main
        Dim <AS:1>c = new C()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

#End Region

#Region "Initializers"

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_Init()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_AsNew()
            Dim src1 = "
Class C
    Dim <AS:0>a As New Integer</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a As New Integer</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_SharedAsNew()
            Dim src1 = "
Class C
    Dim <AS:0>a</AS:0>, b, c As New Integer

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a</AS:0>, b, c As New Integer

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_PropertyInitializer()
            Dim src1 = "
Class C
    Property <AS:0>P As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_PropertyInitializerUntyped()
            Dim src1 = "
Class C
    Property <AS:0>P = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P = 1</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_PropertyAsNewInitializer()
            Dim src1 = "
Class C
    Property <AS:0>P As New C()</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P As New C()</AS:0>

    Sub Main
        Dim <AS:1>b = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_ArrayInitializer_Untyped()
            Dim src1 = "
Class C
    Dim <AS:0>A(10)</AS:0>

    Sub Main
        Dim <AS:1>A(10)</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>A(10)</AS:0>

    Sub Main
        Dim <AS:1>A(10)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/836523")>
        Public Sub Initializer_Unedited_ArrayInitializer_Typed()
            Dim src1 = "
Class C
    Dim <AS:0>A(10)</AS:0>, B(2) As Integer

    Sub Main
        Dim <AS:1>A(10)</AS:1>, B(2) As Integer
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>A(10)</AS:0>, B(2) As Integer

    Sub Main
        Dim <AS:1>A(10)</AS:1>, B(2) As Integer
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstancePropertyInitializer_Update()
            Dim src1 = "
Class C
    Property <AS:0>P As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P As Integer = 2</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstancePropertyAsNewInitializer_Update()
            Dim src1 = "
Class C
    Property <AS:0>P As New C(1)</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P As New C(2)</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub InstancePropertyInitializer_Delete()
            Dim src1 = "
Class C
    Property <AS:0>P As Integer = 1</AS:0>

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    <AS:0>Property P</AS:0> As Integer

    Sub Main
        Dim <AS:1>c = New C()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_Update1()
            Dim src1 = "
Class C
    Dim <AS:0>a = 1</AS:0>, b = 2

    Sub Main
        Dim <AS:1>c = 1</AS:1>, d = 2
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a = 2</AS:0>, b = 2

    Sub Main
        Dim <AS:1>c = 2</AS:1>, d = 2
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c = 2"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_Update2()
            Dim src1 = "
Class C
    Dim a = 1, <AS:0>b = 2</AS:0>

    Sub Main
        Dim c = 1, <AS:1>d = 2</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a = 1, <AS:0>b = 3</AS:0>

    Sub Main
        Dim c = 1, <AS:1>d = 3</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "d = 3"))
        End Sub

        <Fact>
        Public Sub Initializer_SemanticError()
            Dim src1 = "
Class C
    Dim <AS:0>a</AS:0>, <AS:1>b</AS:1> = 2

    Sub Main
        Dim <AS:2>a</AS:2>, <AS:3>b</AS:3> = 2
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a, b = 20

    Sub Main
        Dim <AS:2>a</AS:2>, <AS:3>b</AS:3> = 20
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            ' Since the code is semantically incorrect it's acceptable to misreport active statements.
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub FieldInitializer_AsNewToInit()
            Dim src1 = "
Class C
    Dim <AS:0>a As New Integer</AS:0>

    Sub Main
        Dim <AS:1>b As New Integer</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a As Integer = 0</AS:0>

    Sub Main
        Dim <AS:1>b As Integer = 0</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "b As Integer = 0"))
        End Sub

        <Fact>
        Public Sub PropertyInitializer_AsNewToInit()
            Dim src1 = "
Class C
    Property <AS:0>P As New Integer()</AS:0>
End Class
"

            Dim src2 = "
Class C
    Property <AS:0>P As Integer = 0</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_InitToAsNew()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 0</AS:0>

    Sub Main
        Dim <AS:1>b As Integer = 0</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a As New Integer</AS:0>

    Sub Main
        Dim <AS:1>b As New Integer</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "b As New Integer"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_AsNewMulti_Update1()
            Dim src1 = "
Class C
    Dim <AS:1>a</AS:1>, b As New D(1)
    Dim c, <AS:2>d</AS:2> As New D(1)
    Dim <AS:3>e</AS:3>, <AS:4>f</AS:4> As New D(1)

    Sub Main
        Dim <AS:5>x</AS:5>, y As New D(1)
    <AS:0>End Sub</AS:0>
End Class
"

            Dim src2 = "
Class C
    Dim <AS:1>a</AS:1>, b As New D(2)
    Dim c, <AS:2>d</AS:2> As New D(2)
    Dim <AS:3>e</AS:3>, <AS:4>f</AS:4> As New D(2)

    Sub Main
        Dim <AS:5>x</AS:5>, y As New D(2)
    <AS:0>End Sub</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "a"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "d"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "e"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "f"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "x"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_AsNewMulti_Update3()
            Dim src1 = "
Class C
    Private <AS:0>a As New D(1)</AS:0>
    Private <AS:1>e As New D(1)</AS:1>

    Sub Main
        Dim <AS:2>c As New D(1)</AS:2>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Private <AS:0>a</AS:0>, b As New D(2)
    Private <AS:1>e</AS:1>, f As New D(2)

    Sub Main
        Dim <AS:2>c</AS:2>, d As New D(2)
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "e"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_AsNewMulti_Update4()
            Dim src1 = "
Class C
    Private <AS:0>a</AS:0>, b As New D(1)
    Private <AS:1>e</AS:1>, f As New D(1)

    Sub Main
        Dim <AS:2>c</AS:2>, d As New D(1)
    End Sub
End Class
"

            Dim src2 = "
Class C
    Private <AS:0>a As New D(2)</AS:0>
    Private <AS:1>e As New D(2)</AS:1>

    Sub Main
        Dim <AS:2>c As New D(2)</AS:2>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c As New D(2)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "e As New D(2)"),
                Diagnostic(RudeEditKind.Delete, "a As New D(2)", GetResource("field", "b")),
                Diagnostic(RudeEditKind.Delete, "e As New D(2)", GetResource("field", "f")))
        End Sub

        <Fact>
        Public Sub Initializer_AsNewMulti_DeleteInsert()
            Dim srcA1 = "
Partial Class C
    Private <AS:0>a</AS:0>, b As New D(0)
End Class
"
            Dim srcB1 = "
Partial Class C
End Class
"

            Dim srcA2 = "
Partial Class C
    Private <AS:0>b As New D(1)</AS:0>
End Class
"

            Dim srcB2 = "
Partial Class C
    Private a As New D(0)
End Class
"

            VerifySemantics(
                {GetTopEdits(srcA1, srcA2), GetTopEdits(srcB1, srcB2)},
                {
                    DocumentResults(
                        GetActiveStatements(srcA1, srcA2),
                        diagnostics:=
                        {
                            Diagnostic(RudeEditKind.DeleteActiveStatement, "Partial Class C", GetResource("field", "a"))
                        }),
                    DocumentResults(
                        GetActiveStatements(srcB1, srcB2),
                        semanticEdits:=
                        {
                            SemanticEdit(SemanticEditKind.Update, Function(c) c.GetMember(Of NamedTypeSymbol)("C").InstanceConstructors.Single(), partialType:="C", preserveLocalVariables:=True)
                        })
                })
        End Sub

        <Fact>
        Public Sub Initializer_AsNewMulti_WithLambda1()
            Dim src1 = "
Class C
    Private a As New D(Function() <AS:0>1</AS:0>)
End Class
"

            Dim src2 = "
Class C
    Private a As New D(Function() <AS:0>2</AS:0>)
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/815933")>
        Public Sub Initializer_AsNewMulti_WithLambda2()
            Dim src1 = "
Class C
    Private a As New D(1, <AS:0>Sub()</AS:0>
                                End Sub)
End Class
"

            Dim src2 = "
Class C
    Private a As New D(2, <AS:0>Sub()</AS:0>
                                End Sub)
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Initializer_AsNewMulti_WithLambda3()
            Dim src1 = "
Class C
    Private a, b As New D(Function() <AS:0>1</AS:0>)
End Class
"

            Dim src2 = "
Class C
    Private a, b As New D(Function() <AS:0>2</AS:0>)
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Initializer_Array_SemanticError()
            Dim src1 = "
Class C
    Dim <AS:0>a(1)</AS:0>, <AS:1>b(2)</AS:1> = 3

    Sub Main
        Dim <AS:2>c(1)</AS:2>, <AS:3>d(2)</AS:3> = 3
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a(10)</AS:0>, <AS:1>b(20)</AS:1> = 30

    Sub Main
        Dim <AS:2>c(10)</AS:2>, <AS:3>d(20)</AS:3> = 30
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            ' since the code is semantically incorrect we only care about not crashing
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c(10)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "d(20)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "b(20)"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/849649")>
        Public Sub Initializer_Array_Update1()
            Dim src1 = "
Class C
    Dim <AS:0>a(1)</AS:0>, b(1) As Integer

    Sub Main
        Dim <AS:1>c(1)</AS:1>, d(1) As Integer
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>a(2)</AS:0>, b(1) As Integer

    Sub Main
        Dim <AS:1>c(2)</AS:1>, d(1) As Integer
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c(2)"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/849649")>
        Public Sub Initializer_Array_Update2()
            Dim src1 = "
Class C
    Dim a(1), <AS:0>b(1)</AS:0> As Integer

    Sub Main
        Dim c(1), <AS:1>d(1)</AS:1> As Integer
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a(1), <AS:0>b(2)</AS:0> As Integer

    Sub Main
        Dim c(1), <AS:1>d(2)</AS:1> As Integer
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "d(2)"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/849649")>
        Public Sub Initializer_Array_Update3()
            Dim src1 = "
Class C
    Private <AS:0>a(1,1)</AS:0>
    Private <AS:1>e(1,0)</AS:1>
    Private f(1,0)

    Sub Main
        Dim <AS:2>c(1,0)</AS:2>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Private <AS:0>a(1,0)</AS:0>
    Private <AS:1>e(1,2)</AS:1>
    Private f(1,2)

    Sub Main
        Dim <AS:2>c(1,2)</AS:2>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "e(1,2)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "c(1,2)"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/849649")>
        Public Sub Initializer_Array_WithLambda1()
            Dim src1 = "
Class C
    Private a(Function() <AS:0>1</AS:0>, Function() <AS:1>1</AS:1>)
End Class
"

            Dim src2 = "
Class C
    Private a(Function() <AS:0>2</AS:0>, Function() <AS:1>3</AS:1>)
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "3"))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/849649")>
        Public Sub Initializer_Array_WithLambda2()
            Dim src1 = "
Class C
    Private a(1, F(<AS:0>Sub()</AS:0>
                         End Sub))
End Class
"

            Dim src2 = "
Class C
    Private a(2, F(<AS:0>Sub()</AS:0>
                         End Sub))
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Initializer_Collection1()
            Dim src1 = "
Class C
    Dim <AS:0>A() = {1, 2, 3}</AS:0>
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>A() = {1, 2, 3, 4}</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Initializer_Collection2()
            Dim src1 = "
Class C
    Sub F
        Dim <AS:0>A() = {1, 2, 3}</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub F
        Dim <AS:0>A() = {1, 2, 3, 4}</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_InsertConst1()
            Dim src1 = "
Class C
    Private <AS:0>a As Integer = 1</AS:0>
End Class
"

            Dim src2 = "
Class C
    <AS:0>Private Const a As Integer = 1</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ModifiersUpdate, "Private Const a As Integer = 1", GetResource("field")))
        End Sub

        <Fact>
        Public Sub LocalInitializer_InsertConst1()
            Dim src1 = "
Class C
    Sub Goo
        Private <AS:0>a As Integer = 1</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Goo
        Private Const a As Integer = 1
    <AS:0>End Sub</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_InsertConst2()
            Dim src1 = "
Class C
    Private <AS:0>a As Integer = 1</AS:0>, b As Integer = 2
End Class
"

            Dim src2 = "
Class C
    <AS:0>Private Const a As Integer = 1, b As Integer = 2</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ModifiersUpdate, "Private Const a As Integer = 1, b As Integer = 2", GetResource("field")),
                Diagnostic(RudeEditKind.ModifiersUpdate, "Private Const a As Integer = 1, b As Integer = 2", GetResource("field")))
        End Sub

        <Fact>
        Public Sub LocalInitializer_InsertConst2()
            Dim src1 = "
Class C
    Sub Goo
        Dim <AS:0>a As Integer = 1</AS:0>, b As Integer = 2
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Goo
        Const a As Integer = 1, b As Integer = 2
    <AS:0>End Sub</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete1()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>
    Dim b As Integer = 2

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a As Integer
    Dim <AS:0>b As Integer = 2</AS:0>

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub LocalInitializer_Delete1()
            Dim src1 = "
Class C
    Sub F
        Dim <AS:0>a As Integer = 1</AS:0>
        Dim b As Integer = 2
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub F
        Dim a As Integer
        Dim <AS:0>b As Integer = 2</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete2()
            Dim src1 = "
Class C
    Dim b As Integer = 1
    Dim c As Integer
    Dim <AS:0>a = 1</AS:0>

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>b As Integer = 1</AS:0>
    Dim c As Integer
    Dim a

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete3()
            Dim src1 = "
Class C
    Dim b As Integer = 1
    Dim c As Integer
    Dim <AS:0>a = 1</AS:0>

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim <AS:0>b As Integer = 1</AS:0>
    Dim c As Integer

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Class C", GetResource("field", "C.a")),
                Diagnostic(RudeEditKind.Delete, "Class C", GetResource("field", "a")))
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_AsNew_Single()
            Dim src1 = "
Class C
    Dim <AS:0>a</AS:0> As New D()

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    <AS:0>Dim a As D</AS:0>

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_AsNew_Multi1()
            Dim src1 = "
Class C
    Dim a,<AS:0>b</AS:0>,c As New D()

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a,<AS:0>c</AS:0> As New D()

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Class C", GetResource("field", "C.b")),
                Diagnostic(RudeEditKind.Delete, "a,      c        As New D()", GetResource("field", "b")))
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_AsNew_Multi2()
            Dim src1 = "
Class C
    Dim a,b,<AS:0>c</AS:0> As New D()

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a,<AS:0>b</AS:0> As New D()

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Class C", GetResource("field", "C.c")),
                Diagnostic(RudeEditKind.Delete, "a,      b        As New D()", GetResource("field", "c")))
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_AsNew_WithLambda()
            Dim src1 = "
Class C
    Dim a As New D(<AS:0>Sub()</AS:0>
                   End Sub)

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    <AS:0>Dim a As D</AS:0>

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_Array1()
            Dim src1 = "
Class C
    Dim a,b,<AS:0>c(1)</AS:0> As Integer

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    <AS:0>Dim a,b As Integer</AS:0>

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Class C", GetResource("field", "C.c")),
                Diagnostic(RudeEditKind.Delete, "a,b As Integer", GetResource("field", "c")))
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_Array2()
            Dim src1 = "
Class C
    Dim a,b(1),<AS:0>c(1)</AS:0> As Integer

    Sub New
    End Sub
End Class
"

            Dim src2 = "
Class C
    Dim a,<AS:0>b(1)</AS:0>,c As Integer

    Sub New
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.TypeUpdate, "c", FeaturesResources.field))
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_StaticInstanceMix1()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>
    Shared b As Integer = 1
    Dim c As Integer = 1
End Class
"

            Dim src2 = "
Class C
    Dim a As Integer
    Shared b As Integer = 1
    Dim <AS:0>c As Integer = 1</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_StaticInstanceMix2()
            Dim src1 = "
Class C
    Shared c As Integer = 1
    Shared <AS:0>a As Integer = 1</AS:0>
    Dim b As Integer = 1
End Class
"

            Dim src2 = "
Class C
    Shared <AS:0>c As Integer = 1</AS:0>
    Shared a As Integer
    Dim b As Integer = 1
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_StaticInstanceMix3()
            Dim src1 = "
Class C
    Shared <AS:0>a As Integer = 1</AS:0>
    Dim b As Integer = 1
End Class
"

            Dim src2 = "
Class C
    <AS:0>Shared a As Integer</AS:0>
    Dim b As Integer = 1
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub FieldInitializer_Delete_ArrayInit()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>
    Shared b As Integer = 1
    Dim c(1) As Integer
End Class
"

            Dim src2 = "
Class C
    Dim a As Integer
    Shared b As Integer = 1
    Dim <AS:0>c(1)</AS:0> As Integer
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub PropertyInitializer_Delete_StaticInstanceMix()
            Dim src1 = "
Class C
    Shared Property <AS:0>a As Integer = 1</AS:0>
    Property  b As Integer = 1
End Class
"

            Dim src2 = "
Class C
    <AS:0>Shared Property a</AS:0> As Integer
    Property b As Integer = 1
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub PropertyFieldInitializer1()
            Dim src1 = "
Class C
    Property <AS:0>a As Integer = 1</AS:0>
    Dim b As Integer = 1
    Property c As Integer = 1
End Class
"

            Dim src2 = "
Class C
    Property a As Integer
    Dim <AS:0>b As Integer = 1</AS:0>
    Property c As Integer = 1
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub PropertyFieldInitializer2()
            Dim src1 = "
Class C
    Dim <AS:0>a As Integer = 1</AS:0>
    Property b As Integer = 1
    Property c As Integer = 1
End Class
"

            Dim src2 = "
Class C
    Dim a As Integer
    Property b As Integer
    Property <AS:0>c As Integer = 1</AS:0>
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub
#End Region

#Region "SyncLock"

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755749")>
        Public Sub SyncLock_Insert_Leaf()
            Dim src1 = "
Class Test
    Sub Main()
        <AS:0>System.Console.Write(5)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock lockThis
            <AS:0>System.Console.Write(5)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "SyncLock lockThis", VBFeaturesResources.SyncLock_block))
        End Sub

        <Fact>
        Public Sub SyncLock_Insert_Leaf4()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock a
            SyncLock b
                SyncLock c
                    <AS:0>System.Console.Write()</AS:0>
                End SyncLock
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock b
            SyncLock d
                SyncLock a
                    SyncLock e
                        <AS:0>System.Console.Write()</AS:0>
                    End SyncLock
                End SyncLock
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "SyncLock d", VBFeaturesResources.SyncLock_block),
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "SyncLock e", VBFeaturesResources.SyncLock_block))
        End Sub

        <Fact>
        Public Sub SyncLock_Insert_Leaf5()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock a
            SyncLock c
                SyncLock b
                    SyncLock e
                        <AS:0>System.Console.Write()</AS:0>
                    End SyncLock
                End SyncLock
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock b
            SyncLock d
                SyncLock a
                    <AS:0>System.Console.Write()</AS:0>
                End SyncLock
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "SyncLock d", VBFeaturesResources.SyncLock_statement))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/755752")>
        Public Sub SyncLock_Update_Leaf()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock lockThis
            <AS:0>System.Console.Write(5)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock ""test""
            <AS:0>System.Console.Write(5)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "SyncLock ""test""", VBFeaturesResources.SyncLock_statement))
        End Sub

        <Fact>
        Public Sub SyncLock_Update_Leaf2()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock lockThis
            System.Console.Write(5)
        End SyncLock
        <AS:0>System.Console.Write(5)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock  ""test""
            System.Console.Write(5)
        End SyncLock
        <AS:0>System.Console.Write(5)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub SyncLock_Update_TypeChange()
            Dim src1 = "
Class C
    Sub F()
        Dim a = New Object()
        Dim b = New Object()

        SyncLock a
            SyncLock b
                <AS:0>System.Console.Write()</AS:0>
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub F()
        Dim a = New Object()
        Dim b = New C() ' type change

        SyncLock a
            SyncLock b
                <AS:0>System.Console.Write()</AS:0>
            End SyncLock
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.TypeUpdateAroundActiveStatement, "SyncLock b", VBFeaturesResources.SyncLock_statement, "Object", "C"))
        End Sub

        <Fact>
        Public Sub SyncLock_Delete_Leaf()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock lockThis
            <AS:0>System.Console.Write(5)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        <AS:0>System.Console.Write(5)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub SyncLock_Update_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock F(Function(a) a)
            <AS:0>System.Console.WriteLine(1)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock F(Function(a) a + 1)
            <AS:0>System.Console.WriteLine(2)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub SyncLock_Update_Lambda2()
            Dim src1 = "
Class Test
    Sub Main()
        SyncLock F(Function(a) a)
            <AS:0>System.Console.WriteLine(1)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        SyncLock G(Function(a) a)
            <AS:0>System.Console.WriteLine(2)</AS:0>
        End SyncLock
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "SyncLock G(Function(a) a)", VBFeaturesResources.SyncLock_statement))
        End Sub

#End Region

#Region "ForEach"

        <Fact>
        Public Sub ForEach_Reorder_Leaf1()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                For Each c In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"

            Dim src2 = "
Class Test
    Sub Main()
        For Each b In e1
            For Each c In e1
                For Each a In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Update_Leaf1()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                For Each c In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        For Each b In e1
            For Each c In e1
                For Each a In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Update_Leaf2()
            Dim src1 = "
Class Test
    Sub Main()
        <AS:0>System.Console.Write()</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class Test
    Sub Main()
        For Each b In e1
            For Each c In e1
                For Each a In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "For Each b In e1", VBFeaturesResources.For_Each_block),
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "For Each c In e1", VBFeaturesResources.For_Each_block),
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "For Each a In e1", VBFeaturesResources.For_Each_block))
        End Sub

        <Fact>
        Public Sub ForEach_Update_Leaf_TypeChange()
            Dim src1 = "
Class Test
    Sub Main()
        Dim e1 = {1}
        Dim e2 = {1.0}

        For Each a In e1
            For Each b In e2
                <AS:0>System.Console.Write()</AS:0>
            Next
        Next
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        Dim e1 = {1}
        Dim e2 = {1} ' type change

        For Each a In e1
            For Each b In e2
                <AS:0>System.Console.Write()</AS:0>
            Next
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.TypeUpdateAroundActiveStatement, "For Each b In e2", VBFeaturesResources.For_Each_statement, "Double()", "Integer()"))
        End Sub

        <Fact>
        Public Sub ForEach_Delete_Leaf1()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                For Each c In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"

            Dim src2 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                <AS:0>System.Console.Write()</AS:0>
            Next
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Delete_Leaf2()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                For Each c In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"

            Dim src2 = "
Class Test
    Sub Main()
        For Each b In e1
            For Each c In e1
                <AS:0>System.Console.Write()</AS:0>
            Next
        Next
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Delete_Leaf3()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each b In e1
                For Each c In e1
                    <AS:0>System.Console.Write()</AS:0>
                Next
            Next
        Next
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        For Each a In e1
            For Each c In e1
                <AS:0>System.Console.Write()</AS:0>
            Next
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        Dim a = Sub()
            <AS:0>System.Console.Write()</AS:0>
        End Sub

        <AS:1>a()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        For Each b In e1
            For Each c In e1
                Dim a = Sub()
                    For Each z In e1
                        <AS:0>System.Console.Write()</AS:0>
                    Next
                End Sub
            Next

            <AS:1>a()</AS:1>
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "For Each z In e1", VBFeaturesResources.For_Each_block),
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "For Each b In e1", VBFeaturesResources.For_Each_block))
        End Sub

        <Fact>
        Public Sub ForEach_Update_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        Next
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        For Each a In F(Function(a) a + 1)
            <AS:0>System.Console.Write(2)</AS:0>
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub ForEach_Update_Lambda2()
            Dim src1 = "
Class Test
    Sub Main()
        For Each a In F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        Next
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        For Each a In G(Function(a) a)
            <AS:0>System.Console.Write(2)</AS:0>
        Next
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "For Each a In G(Function(a) a)", VBFeaturesResources.For_Each_statement))
        End Sub

#End Region

#Region "Using"

        <Fact>
        Public Sub Using_Update_Leaf1()
            Dim src1 = "
Class Test
    Sub Main()
        Using a
            Using b
                <AS:0>System.Console.Write()</AS:0>
            End Using
        End Using
    End sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        Using a
            Using c
                Using b
                    <AS:0>System.Console.Write()</AS:0>
                End Using
            End Using
        End Using
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active, Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Using c", VBFeaturesResources.Using_block))
        End Sub

        <Fact>
        Public Sub Using_Update_Leaf_TypeChange()
            Dim src1 = "
Imports System

Class Test
    Sub Main()
        Dim a = New D1()
        Dim b = New D1()

        Using a
            Using b
                <AS:0>System.Console.Write()</AS:0>
            End Using
        End Using
    End sub
End Class

Class D1
    Implements IDisposable

    Sub Dispose() Implements IDisposable.Dispose
    End Sub
End Class

Class D2
    Implements IDisposable

    Sub Dispose() Implements IDisposable.Dispose
    End Sub
End Class
"
            Dim src2 = "
Imports System

Class Test
    Sub Main()
        Dim a = New D1()
        Dim b = New D2() ' type change

        Using a
            Using b
                <AS:0>System.Console.Write()</AS:0>
            End Using
        End Using
    End Sub
End Class

Class D1
    Implements IDisposable

    Sub Dispose() Implements IDisposable.Dispose
    End Sub
End Class

Class D2
    Implements IDisposable

    Sub Dispose() Implements IDisposable.Dispose
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.TypeUpdateAroundActiveStatement, "Using b", VBFeaturesResources.Using_statement, "D1", "D2"))
        End Sub

        <Fact>
        Public Sub Using_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        Using a
            Dim z = Function()
                Using b
                    <AS:0>Return 1</AS:0>
                End Using
            End Function
        End Using

        <AS:1>a()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        Using d
            Dim z = Function()
                Using c
                    Using b
                        <AS:0>Return 1</AS:0>
                    End Using
                End Using
            End Function
        End Using

        <AS:1>a()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Using c", VBFeaturesResources.Using_block))
        End Sub

        <Fact>
        Public Sub Using_Update_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        Using F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        End Using
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        Using F(Function(a) a + 1)
            <AS:0>System.Console.Write(2)</AS:0>
        End Using
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Using_Update_Lambda2()
            Dim src1 = "
Class Test
    Sub Main()
        Using F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        End Using
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        Using G(Function(a) a)
            <AS:0>System.Console.Write(2)</AS:0>
        End Using
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Using G(Function(a) a)", VBFeaturesResources.Using_statement))
        End Sub

        <Fact>
        Public Sub Using_VariableDeclaration_Update_Leaf()
            Dim src1 = "
Imports System
Imports System.ComponentModel

Class Test
    Sub Main()
        Using x As New Component()
            <AS:0>Console.WriteLine(""Test"")</AS:0>
        End Using
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.ComponentModel

Class Test
    Sub Main()
        Using x As New Component()
            <AS:0>Console.WriteLine(""Test2"")</AS:0>
        End Using
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Using_VariableDeclaration_Insert()
            Dim src1 = "
Imports System
Imports System.ComponentModel

Class Test
    Sub Main()
        <AS:0>Console.WriteLine(""Test"")</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.ComponentModel

Class Test
    Sub Main()
        Using x As New Component()
            <AS:0>Console.WriteLine(""Test"")</AS:0>
        End Using
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            ' Variable declaration Using blocks don't introduce compiler-generated temporaries,
            ' so no rude edit is reported for insert.
            edits.VerifySemanticDiagnostics(active)
        End Sub

#End Region

#Region "With"

        <Fact>
        Public Sub With_Update_Leaf1()
            Dim src1 = "
Class C
    Sub F()
        Dim a = New Object()
        Dim b = New Object()

        With a
            With b
                <AS:0>System.Console.Write()</AS:0>
            End With
        End With
    End sub
End Class
"
            Dim src2 = "
Class C
    Sub F()
        Dim a = New Object()
        Dim b = New C() ' type change

        With a
            With b
                <AS:0>System.Console.Write()</AS:0>
            End With
        End With
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.TypeUpdateAroundActiveStatement, "With b", VBFeaturesResources.With_statement, "Object", "C"))
        End Sub

        <Fact>
        Public Sub With_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        With a
            Dim z = Function()
                With b
                    <AS:0>Return 1</AS:0>
                End With
            End Function
        End With

        <AS:1>a()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        With d
            Dim z = Function()
                With c
                    With b
                        <AS:0>Return 1</AS:0>
                    End With
                End With
            End Function
        End With

        <AS:1>a()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "With c", VBFeaturesResources.With_block))
        End Sub

        <Fact>
        Public Sub With_Update_Lambda1()
            Dim src1 = "
Class Test
    Sub Main()
        With F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        End With
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        With F(Function(a) a + 1)
            <AS:0>System.Console.Write(1)</AS:0>
        End With
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub With_Update_Lambda2()
            Dim src1 = "
Class Test
    Sub Main()
        With F(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        End With
    End Sub
End Class
"
            Dim src2 = "
Class Test
    Sub Main()
        With G(Function(a) a)
            <AS:0>System.Console.Write(1)</AS:0>
        End With
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "With G(Function(a) a)", VBFeaturesResources.With_statement))
        End Sub

#End Region

#Region "Try, Catch, Finally"

        <Fact>
        Public Sub Try_Add_Inner()
            Dim src1 = "
Class C
    Shared Sub Bar()
        <AS:1>Goo()</AS:1>
    End Sub

    Shared Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Shared Sub Bar()
        Try
            <AS:1>Goo()</AS:1>
        Catch
        End Try
    End Sub

    Shared Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Try", VBFeaturesResources.Try_block))
        End Sub

        <Fact>
        Public Sub Try_Add_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
            <AS:0>Console.WriteLine(1)</AS:0>
        Catch
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Try_Delete_Inner()
            Dim src1 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Catch 
        End Try</ER:1.0>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Goo()", VBFeaturesResources.Try_block))
        End Sub

        <Fact>
        Public Sub Try_Delete_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>        
    End Sub

    Sub Goo()
        Try
            <AS:0>Console.WriteLine(1)</AS:0>
        Catch
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>        
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Try_Update_Inner()
            Dim src1 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Catch
        End Try</ER:1.0>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        Catch e As IOException
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Try", VBFeaturesResources.Try_block))
        End Sub

        <Fact>
        Public Sub Try_Update_Inner2()
            Dim src1 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Catch
        End Try</ER:1.0>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Catch
        End Try</ER:1.0>
        Console.WriteLine(2)
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub TryFinally_Update_Inner()
            Dim src1 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Finally
        End Try</ER:1.0>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try
            <AS:1>Goo()</AS:1>
        <ER:1.0>Finally
        End Try</ER:1.0>
        Console.WriteLine(2)
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Try_Update_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
            <AS:0>Console.WriteLine(1)</AS:0>
        Catch
        End Try
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
            <AS:0>Console.WriteLine(1)</AS:0>
        Catch e As IOException
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub TryFinally_DeleteStatement_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <AS:0>Console.WriteLine(0)</AS:0>

        Try
            <AS:1>Console.WriteLine(1)</AS:1>
        <ER:1.0>Finally
            Console.WriteLine(2)
        End Try</ER:1.0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        <AS:0>Console.WriteLine(0)</AS:0>

        <AS:1>Try</AS:1>
        Finally
            Console.WriteLine(2)
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Try", FeaturesResources.code))
        End Sub

        <Fact>
        Public Sub TryFinally_DeleteStatement_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <ER:0.0>Try
            Console.WriteLine(0)
        Finally
            <AS:0>Console.WriteLine(1)</AS:0>
        End Try</ER:0.0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try
            Console.WriteLine(0)
        <AS:0>Finally</AS:0>
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Finally", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub Try_DeleteStatement_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <AS:0>Console.WriteLine(0)</AS:0>

        Try
            <AS:1>Console.WriteLine(1)</AS:1>
        <ER:1.0>Finally
            Console.WriteLine(2)
        End Try</ER:1.0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        <AS:0>Console.WriteLine(0)</AS:0>

        <AS:1>Try</AS:1>
        Finally
            Console.WriteLine(2)
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Try", FeaturesResources.code))
        End Sub

        <Fact>
        Public Sub Try_DeleteStatement_Leaf()
            Dim src1 = "
Class C
    Sub Main()

        Try
            <AS:0>Console.WriteLine(1)</AS:0>
        Finally
            Console.WriteLine(2)
        End Try
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()

        <AS:0>Try</AS:0>
        Finally
            Console.WriteLine(2)
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Catch_Add_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try
        Catch
            <AS:1>Goo()</AS:1>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Catch_Add_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        Catch 
            <AS:0>Console.WriteLine(1)</AS:0>
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Catch_Delete_Inner()
            Dim src1 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch 
            <AS:1>Goo()</AS:1></ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Goo()", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Catch_Delete_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>        
    End Sub

    Sub Goo()
        Try
        <ER:0.0>Catch
            <AS:0>Console.WriteLine(1)</AS:0></ER:0.0>
        End Try
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Console.WriteLine(1)", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Catch_Update_Inner()
            Dim src1 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch
            <AS:1>Goo()</AS:1></ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch e As IOException
            <AS:1>Goo()</AS:1></ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Catch_Update_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0>Catch
            <AS:0>Console.WriteLine(1)</AS:0></ER:0.0>
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0>Catch e As IOException
            <AS:0>Console.WriteLine(1)</AS:0></ER:0.0>
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub CatchFilter_Update_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <AS:0>Goo()</AS:0>
    End Sub

    Sub Goo()
        Try
        <ER:1.0><AS:1>Catch e As IOException When Goo(1)</AS:1>
            Console.WriteLine(1)</ER:1.0>
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:0>Goo()</AS:0>
    End Sub

    Sub Goo()
        Try
        <ER:1.0><AS:1>Catch e As IOException When Goo(2)</AS:1>
            Console.WriteLine(1)</ER:1.0>
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Catch e As IOException When Goo(2)"),
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub CatchFilter_Update_Leaf1()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0><AS:0>Catch e As IOException When Goo(1)</AS:0>
            Console.WriteLine(1)</ER:0.0>
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0><AS:0>Catch e As IOException When Goo(2)</AS:0>
            Console.WriteLine(1)
        End Try</ER:0.0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub CatchFilter_Update_Leaf2()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0><AS:0>Catch e As IOException When Goo(1)</AS:0>
            Console.WriteLine(1)</ER:0.0>
        End Try
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        <ER:0.0><AS:0>Catch e As Exception When Goo(1)</AS:0>
            Console.WriteLine(1)
        End Try<ER:0.0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause))
        End Sub

        <Fact>
        Public Sub Finally_Add_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        Try
        Finally 
            <AS:1>Goo()</AS:1>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Finally", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub Finally_Add_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        Try
        Finally 
            <AS:0>Console.WriteLine(1)</AS:0>
        End Try
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active, Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Finally", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub Finally_Delete_Inner()
            Dim src1 = "
Class C
    Sub Main()
        <ER:1.0>Try
        Finally 
            <AS:1>Goo()</AS:1>
        End Try</ER:1.0>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Goo()", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub Finally_Delete_Leaf()
            Dim src1 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>        
    End Sub

    Sub Goo()
        <ER:0.0>Try
        Finally
            <AS:0>Console.WriteLine(1)</AS:0>
        End Try</ER:0.0>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        <AS:1>Goo()</AS:1>
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Console.WriteLine(1)", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub TryCatchFinally()
            Dim src1 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch e As IOException
            Try
                Try
                    Try
                        <AS:1>Goo()</AS:1>
                    Catch 
                    End Try
                Catch Exception
                End Try
            Finally
            End Try</ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch e As Exception
            Try
                Try
                Finally
                    Try
                        <AS:1>Goo()</AS:1>
                    Catch 
                    End Try
                End Try
            Catch e As Exception
            End Try</ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Catch", VBFeaturesResources.Catch_clause),
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Try", VBFeaturesResources.Try_block),
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Goo()", VBFeaturesResources.Try_block),
                Diagnostic(RudeEditKind.InsertAroundActiveStatement, "Finally", VBFeaturesResources.Finally_clause))
        End Sub

        <Fact>
        Public Sub TryCatchFinally_Regions()
            Dim src1 = "
Class C
    Sub Main()
        Try
        <ER:1.0>Catch e As IOException
            Try
                Try
                    Try
                        <AS:1>Goo()</AS:1>
                    Catch 
                    End Try
                Catch e As Exception
                End Try
            Finally
            End Try</ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Try            
        <ER:1.0>Catch e As IOException
            Try : Try : Try : <AS:1>Goo()</AS:1> : Catch : End Try : Catch e As Exception : End Try : Finally : End Try</ER:1.0>
        End Try
    End Sub

    Sub Goo()
        <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Try_Lambda1()
            Dim src1 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f As Func(Of Integer, Integer) = Nothing
        Try
            f = Function(x) <AS:1>1 + Goo(x)</AS:1>
        Catch
        End Try

        <AS:2>Console.Write(f(2))</AS:2>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f As Func(Of Integer, Integer) = Nothing
        f = Function(x) <AS:1>1 + Goo(x)</AS:1>
        <AS:2>Console.Write(f(2))</AS:2>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Try_Lambda2()
            Dim src1 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f = Function(x) 
                    Try
                        <AS:1>Return 1 + Goo(x)</AS:1>
                    <ER:1.0>Catch
                    End Try</ER:1.0>
                End Function

        <AS:2>Console.Write(f(2))</AS:2>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f = Function(x) 
                     <AS:1>Return 1 + Goo(x)</AS:1>
                End Function

        <AS:2>Console.Write(f(2))</AS:2>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteAroundActiveStatement, "Return 1 + Goo(x)", VBFeaturesResources.Try_block))
        End Sub

        <Fact>
        Public Sub Try_Query_Join1()
            Dim src1 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Try
            q = From x In xs
                Join y In ys On <AS:1>F()</AS:1> Equals G()
                Select 1
        Catch
        End Try

        <AS:2>q.ToArray()</AS:2>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        q = From x In xs
            Join y In ys On <AS:1>F()</AS:1> Equals G()
            Select 1

        <AS:2>q.ToArray()</AS:2>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ComplexQueryExpression, "Join y In ys On       F()        Equals G()", FeaturesResources.method))
        End Sub

        <Fact>
        Public Sub Try_Query_Join2()
            Dim src1 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f = Sub()
                    Try
                        Dim q = From x In xs
                                Join y In ys On <AS:1>F()</AS:1> Equals G()
                                Select 1
                    Catch
                    End Try

                    <AS:2>q.ToArray()</AS:2>
                End Sub
    End Sub
End Class
"
            Dim src2 = "
Class C
    Function Goo(x As Integer) As Integer
        <AS:0>Return 1</AS:0>
    End Function

    Sub Main()
        Dim f = Sub()
                    Dim q = From x In xs
                            Join y In ys On <AS:1>F()</AS:1> Equals G()
                            Select 1

                    <AS:2>q.ToArray()</AS:2>
                End Sub
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ComplexQueryExpression, "Join y In ys On       F()        Equals G()", GetResource("Lambda")))
        End Sub
#End Region

#Region "Lambdas"
        <Fact>
        Public Sub Lambdas_SingleLineToMultiLine1()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a) <AS:0>1</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0>
                    Return 1
                End Function
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Lambdas_SingleLineToMultiLine2()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0> 1
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0>
                    Return 1
                End Function
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Lambdas_MultiLineToSingleLine1()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a)
                    <AS:0>Return 1</AS:0>
                End Function
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0> 1
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Lambdas_MultiLineToSingleLine2()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0>
                    Return 1
                End Function
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0> 1
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Lambdas_MultiLineToSingleLine3()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a)
                    Return 1
                <AS:0>End Function</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(a)</AS:0> 1
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub Lambdas_ActiveStatementRemoved1()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a)
            Return Function(b) <AS:0>b</AS:0>
        End Function

        Dim z = f(1)
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(b)</AS:0>  b

        Dim z = f
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "Function(b)", GetResource("Lambda")))
        End Sub

        <Fact>
        Public Sub Lambdas_ActiveStatementRemoved2()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a) Function(b) <AS:0>b</AS:0>

        Dim z = f(1)
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim f = <AS:0>Function(b)</AS:0> b

        Dim z = f
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "Function(b)", GetResource("Lambda")))
        End Sub

        <Fact>
        Public Sub Lambdas_ActiveStatementRemoved3()
            Dim src1 = "
Class C
    Sub Main()
        Dim f = Function(a)
            Dim z As Func(Of Integer, Integer)

            F(Function(b)
                <AS:0>Return b</AS:0>
            End Function, z)

            Return z
        End Function

        Dim z = f(1)
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        Dim f = Function(b)
            <AS:0>F(b)</AS:0>

            Return 1
        End Function

        Dim z = f
        <AS:1>z(2)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "F(b)", VBFeaturesResources.Lambda))
        End Sub

        <Fact>
        Public Sub Lambdas_ActiveStatementRemoved4()
            Dim src1 = "
Class C
    Shared Sub F()
        Dim f = Function(a)
            <AS:1>z(2)</AS:1>

            return Function (b)
                <AS:0>Return b</AS:0>
            End Function
        End Function
    End Sub
End Class"
            Dim src2 = "
Class C
    <AS:0,1>Shared Sub F()</AS:0,1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "Shared Sub F()", VBFeaturesResources.Lambda),
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "Shared Sub F()", VBFeaturesResources.Lambda))
        End Sub

        <Fact>
        Public Sub Queries_ActiveStatementRemoved_WhereClause()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a In b Where <AS:0>b.goo</AS:0> Select b.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select b.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Where_clause))
        End Sub

        <Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/841361")>
        Public Sub Queries_ActiveStatementRemoved_LetClause()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a In b Let x = <AS:0>a.goo</AS:0> Select x
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"

            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select x
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"

            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Let_clause))
        End Sub

        <Fact>
        Public Sub Queries_ActiveStatementRemoved_JoinClauseLeft()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a In b
                Join c In d On <AS:0>a.goo</AS:0> Equals c.bar
                Select a.bar

        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select a.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(
                active,
                Diagnostic(RudeEditKind.ComplexQueryExpression, "Sub Main()", GetResource("method")),
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Join_condition))
        End Sub

        <Fact>
        Public Sub Queries_ActiveStatementRemoved_OrderBy1()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a In b
                Order By <AS:0>a.x</AS:0>, a.y Descending, a.z Ascending
                Select a

        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select a.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Ordering_clause))
        End Sub

        <Fact>
        Public Sub Queries_ActiveStatementRemoved_OrderBy2()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a in b
                Order By a.x, <AS:0>a.y</AS:0> Descending, a.z Ascending
                Select a

        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select a.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Ordering_clause))
        End Sub

        <Fact>
        Public Sub Queries_ActiveStatementRemoved_OrderBy3()
            Dim src1 = "
Class C
    Sub Main()
        Dim s = From a in b
                Order By a.x, a.y Descending, <AS:0>a.z</AS:0> Ascending
                Select a

        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main()
        Dim s = <AS:0>From</AS:0> a In b Select a.bar
        <AS:1>s.ToArray()</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementLambdaRemoved, "From", VBFeaturesResources.Ordering_clause))
        End Sub

        <Fact>
        Public Sub MisplacedActiveStatement1()
            Dim src1 = "
<AS:1>Class C</AS:1>
    Function F(a As Integer) As Integer
        <AS:0>Return a</AS:0> 
        <AS:2>Return a</AS:2> 
    End Function
End Class
"
            Dim src2 = "
Class C
    Function F(a As Integer) As Integer
        <AS:0>return a</AS:0> 
        <AS:2>return a</AS:2> 
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)
            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub MisplacedActiveStatement2()
            Dim src1 = "
Class C
    <AS:0><Attr></AS:0>
    Shared Sub Main()
    End Sub
End Class"
            Dim src2 = "
Class C
    <Attr>
    <AS:0>Shared Sub Main()</AS:0>
    End Sub
End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub MisplacedTrackingSpan1()
            Dim src1 = "
Class C
    <AS:0><Attr></AS:0>
    Shared Sub Main()
    End Sub
End Class"
            Dim src2 = "
Class C
    <TS:0><Attr></TS:0>
    <AS:0>Shared Sub Main()</AS:0>
    End Sub
End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub MisplacedTrackingSpan2()
            Dim src1 = "
Class C
    Dim f = <AS:0>1</AS:0>
End Class"
            Dim src2 = "
Class C
    <TS:0>Dim</TS:0> <AS:0>f = 1</AS:0>
End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub MisplacedTrackingSpan3()
            Dim src1 = "
Class C
    Dim <AS:0>f</AS:0>, g As New C()
End Class"
            Dim src2 = "
Class C
    <TS:0>Dim</TS:0> <AS:0>f</AS:0>, g As New C()
End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact>
        Public Sub MisplacedTrackingSpan4()
            Dim src1 = "
Class C
    <AS:0>Property</AS:0> f As New C()
End Class"
            Dim src2 = "
Class C
    <TS:0>Property</TS:0> <AS:0>f As New C()</AS:0>
End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1359")>
        Public Sub Lambdas_LeafEdits_GeneralStatement()
            Dim src1 = "
Class C
    Sub Main() 
        <AS:1>F(Function(a) <AS:0>1</AS:0>)</AS:1>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main() 
        <AS:1>F(Function(a) <AS:0>2</AS:0>)</AS:1>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active)
        End Sub

        <Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1359")>
        Public Sub Lambdas_LeafEdits_NestedLambda()
            Dim src1 = "
Class C
    Sub Main() 
        <AS:2>F(Function(b) <AS:1>F(Function(a) <AS:0>1</AS:0>)</AS:1>)</AS:2>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Sub Main() 
        <AS:2>F(Function(b) <AS:1>G(Function(a) <AS:0>1</AS:0>)</AS:1>)</AS:2>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "G(Function(a)       1       )"))
        End Sub

#End Region

#Region "State Machines"
        <Fact>
        Public Sub MethodToIteratorMethod_WithActiveStatement()
            Dim src1 = "
Imports System
Imports System.Collections.Generic
Class C
    Function F() As IEnumerable(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Return {1, 1}
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Yield 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                 Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Iterator Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToIteratorMethod_WithActiveStatement_NoYield()
            Dim src1 = "
Imports System
Imports System.Collections.Generic
Class C
    Function F() As IEnumerable(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Iterator Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToIteratorMethod_WithActiveStatementInLambda()
            Dim src1 = "
Imports System
Imports System.Collections.Generic
Class C
    Function F() As IEnumerable(Of Integer)
        Dim a = Sub() <AS:0>Console.WriteLine(1)</AS:0>
        a()
        Return {1, 1}
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        Dim a = Sub() <AS:0>Console.WriteLine(1)</AS:0>
        a()
        Yield 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(
                active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub MethodToIteratorMethod_WithoutActiveStatement()
            Dim src1 = "
Imports System
Imports System.Collections.Generic
Class C
    Function F() As IEnumerable(Of Integer)
        Console.WriteLine(1)
        Return {1, 1}
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        Console.WriteLine(1)
        Yield 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(
                active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatement1()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Function F() As Task(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Return Await Task.FromResult(1)
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatement2()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    <AS:0>Function F() As Task(Of Integer)</AS:0>
        Console.WriteLine(1)
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    <AS:0>Async Function F() As Task(Of Integer)</AS:0>
        Console.WriteLine(1)
        Return 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatement3()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Function F() As Task(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        <AS:0>Console.WriteLine(1)</AS:0>
        Return 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatementInLambda1()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Function F() As Task(Of Integer)
        Dim a = Sub() <AS:0>Console.WriteLine(1)</AS:0>
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        Dim a = Sub() <AS:0>Console.WriteLine(1)</AS:0>
        Return Await Task.FromResult(1)
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(
                active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatementInLambda2()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Function F() As Task(Of Integer)
        Dim a = Sub() <AS:1>Console.WriteLine(1)</AS:1>
        <AS:0>a()</AS:0>
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        Dim a = Sub() <AS:1>Console.WriteLine(1)</AS:1>
        <AS:0>a()</AS:0>
        Return 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function F()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatementInLambda3()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim a = Sub() <AS:0>Console.WriteLine(1)</AS:0>
        Return
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Sub F()
        Dim a = Async Sub() <AS:0>Console.WriteLine(1)</AS:0>
        Return
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Sub()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithActiveStatementInLambda4()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim a = Function() <AS:0>Task.FromResult(1)</AS:0>
        Return
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Sub F()
        Dim a = Async Function() <AS:0>1</AS:0>
        Return
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function()"))
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithoutActiveStatement1()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Function F() As Task(Of Integer)
        Console.WriteLine(1)
        Return Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        Console.WriteLine(1)
        Return Await Task.FromResult(1)
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(
                active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub MethodToAsyncMethod_WithoutActiveStatement2()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Console.WriteLine(1)
        Return
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Sub F()
        Console.WriteLine(1)
        Return
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub LambdaToAsyncLambda_WithActiveStatement_NoAwait()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Sub() <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Async Sub() <AS:0>Console.WriteLine(1)</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Sub()"))
        End Sub

        <Fact>
        Public Sub LambdaToAsyncLambda_WithActiveStatement_NoAwait_Nested1()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Function(a) <AS:0>Task.FromResult(Function(b) 1)</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Async Function(a) <AS:0>Function(b) 1</AS:0>
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            ' Rude edit since the AS is within the outer function.
            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Async Function(a)"))
        End Sub

        <Fact>
        Public Sub LambdaToAsyncLambda_WithActiveStatement_NoAwait_Nested2()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Function(a) Task.FromResult(<AS:0>Function(b)</AS:0> a + b)
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Sub F()
        Dim f = Async Function(a) <AS:0>Function(b)</AS:0> a + b
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            ' No rude edit since the AS is within the nested function.
            edits.VerifySemanticDiagnostics(active,
                capabilities:=EditAndContinueCapabilities.NewTypeDefinition Or EditAndContinueCapabilities.AddExplicitInterfaceImplementation)
        End Sub

        <Fact>
        Public Sub LambdaToIteratorLambda_WithActiveStatement_NoYield()
            Dim src1 = "
Class C
    Function G() As IEnumerable(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = Function() <AS:0>G()</AS:0>
    End Sub
End Class
"
            Dim src2 = "
Class C
    Function G() As IEnumerable(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = <AS:0>Iterator Function() As IEnumerable(Of Integer)</AS:0>
                  G()
                End Function
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdatingStateMachineMethodAroundActiveStatement, "Iterator Function()"))
        End Sub

        <Fact>
        Public Sub AsyncLambdaToLambda_WithoutActiveStatement_NoAwait()
            Dim src1 = "
Class C
    Shared Function G() As Task(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = Async Function() As Task(Of Integer)
                End Function
    End Sub
End Class
"
            Dim src2 = "
Class C
    Shared Function G() As Task(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = Function() As Task(Of Integer)
                  Return G()
                End Function
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ChangingFromAsynchronousToSynchronous, "Function()", GetResource("Lambda")))
        End Sub

        <Fact>
        Public Sub IteratorLambdaToLambda_WithoutActiveStatement_NoYield()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Shared Function G() As IEnumerable(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = Iterator Function() As IEnumerable(Of Integer)
                End Function
    End Sub
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Shared Function G() As IEnumerable(Of Integer)
        Return Nothing
    End Function
 
    Sub F()
        Dim f = Function() As IEnumerable(Of Integer)
                  Return G()
                End Function
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.ModifiersUpdate, "Function()", GetResource("Lambda")))
        End Sub

        <Fact>
        Public Sub AsyncMethodEdit_Semantics()
            Dim src1 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        Console.WriteLine(1)
        Await Task.FromResult(1)
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Threading.Tasks
Class C
    Async Function F() As Task(Of Integer)
        Console.WriteLine(2)
        Await Task.FromResult(1)
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)

            edits.VerifySemanticDiagnostics(
                capabilities:=EditAndContinueCapabilities.AddInstanceFieldToExistingType)
        End Sub

        <Fact>
        Public Sub IteratorMethodEdit_Semantics()
            Dim src1 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        Console.WriteLine(1)
        Yield 1
    End Function
End Class
"
            Dim src2 = "
Imports System
Imports System.Collections.Generic
Class C
    Iterator Function F() As IEnumerable(Of Integer)
        Console.WriteLine(2)
        Yield 1
    End Function
End Class
"
            Dim edits = GetTopEdits(src1, src2)

            edits.VerifySemanticDiagnostics(
                capabilities:=EditAndContinueCapabilities.AddInstanceFieldToExistingType)
        End Sub
#End Region

#Region "On Error"
        <Fact>
        Public Sub MethodUpdate_OnError1()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "label : <AS:0>Console.Write(1)</AS:0> : On Error GoTo label : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "label : <AS:0>Console.Write(2)</AS:0> : On Error GoTo label : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "On Error GoTo label", VBFeaturesResources.On_Error_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_OnError2()
            Dim src1 = "Class C" & vbLf & "<AS:0>Sub M()</AS:0>" & vbLf & "Console.Write(1) : On Error GoTo 0 : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "<AS:0>Sub M()</AS:0>" & vbLf & "Console.Write(2) : On Error GoTo 0 : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "On Error GoTo 0", VBFeaturesResources.On_Error_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_OnError3()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(1) : <AS:0>On Error GoTo -1</AS:0> : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(2) : <AS:0>On Error GoTo -1</AS:0> : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "On Error GoTo -1", VBFeaturesResources.On_Error_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_OnError4()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(1) : On Error Resume Next : <AS:0>End Sub</AS:0> : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(2) : On Error Resume Next : <AS:0>End Sub</AS:0> : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "On Error Resume Next", VBFeaturesResources.On_Error_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_Resume1()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(1) : <AS:0>Resume</AS:0> : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(2) : <AS:0>Resume</AS:0> : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Resume", VBFeaturesResources.Resume_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_Resume2()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(1) : <AS:0>Resume Next</AS:0> : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "Console.Write(2) : <AS:0>Resume Next</AS:0> : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Resume Next", VBFeaturesResources.Resume_statement))
        End Sub

        <Fact>
        Public Sub MethodUpdate_Resume3()
            Dim src1 = "Class C" & vbLf & "Sub M()" & vbLf & "<AS:0>label :</AS:0> Console.Write(1) : Resume label : End Sub : End Class"
            Dim src2 = "Class C" & vbLf & "Sub M()" & vbLf & "<AS:0>label :</AS:0> Console.Write(2) : Resume label : End Sub : End Class"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2)

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.UpdateAroundActiveStatement, "Resume label", VBFeaturesResources.Resume_statement))
        End Sub
#End Region

        <Fact>
        Public Sub PartiallyExecutedActiveStatement()
            Dim src1 As String = "
Class C
    Sub F()
        <AS:0>Console.WriteLine(1)</AS:0> 
        <AS:1>Console.WriteLine(2)</AS:1> 
        <AS:2>Console.WriteLine(3)</AS:2> 
        <AS:3>Console.WriteLine(4)</AS:3> 
        <AS:4>Console.WriteLine(5)</AS:4> 
    End Sub
End Class
"
            Dim src2 As String = "
Class C
    Sub F()
        <AS:0>Console.WriteLine(10)</AS:0> 
        <AS:1>Console.WriteLine(20)</AS:1> 
        <AS:2>Console.WriteLine(30)</AS:2> 
        <AS:3>Console.WriteLine(40)</AS:3> 
        <AS:4>Console.WriteLine(50)</AS:4> 
    End Sub
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2,
            {
                ActiveStatementFlags.PartiallyExecuted Or ActiveStatementFlags.LeafFrame,
                ActiveStatementFlags.PartiallyExecuted Or ActiveStatementFlags.NonLeafFrame,
                ActiveStatementFlags.LeafFrame,
                ActiveStatementFlags.NonLeafFrame,
                ActiveStatementFlags.NonLeafFrame Or ActiveStatementFlags.LeafFrame
            })

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.PartiallyExecutedActiveStatementUpdate, "Console.WriteLine(10)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Console.WriteLine(20)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Console.WriteLine(40)"),
                Diagnostic(RudeEditKind.ActiveStatementUpdate, "Console.WriteLine(50)"))
        End Sub

        <Fact>
        Public Sub PartiallyExecutedActiveStatement_Delete1()
            Dim src1 As String = "
Class C
    Sub F()
        <AS:0>Console.WriteLine(1)</AS:0> 
    End Sub
End Class
"
            Dim src2 As String = "
Class C
    Sub F()
    <AS:0>End Sub</AS:0> 
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2, {ActiveStatementFlags.PartiallyExecuted Or ActiveStatementFlags.LeafFrame})

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.PartiallyExecutedActiveStatementDelete, "Sub F()", FeaturesResources.code))
        End Sub

        <Fact>
        Public Sub PartiallyExecutedActiveStatement_Delete2()
            Dim src1 As String = "
Class C
    Sub F()
        <AS:0>Console.WriteLine(1)</AS:0> 
    End Sub
End Class
"
            Dim src2 As String = "
Class C
    Sub F()
    <AS:0>End Sub</AS:0> 
End Class
"
            Dim edits = GetTopEdits(src1, src2)
            Dim active = GetActiveStatements(src1, src2, {ActiveStatementFlags.NonLeafFrame Or ActiveStatementFlags.LeafFrame})

            edits.VerifySemanticDiagnostics(active,
                Diagnostic(RudeEditKind.DeleteActiveStatement, "Sub F()", FeaturesResources.code))
        End Sub
    End Class
End Namespace