src/EditorFeatures/Test2/Rename/RenameEngineTests.CSharpConflicts.vb - main - githubmirror/roslyn

src/EditorFeatures/Test2/Rename/RenameEngineTests.CSharpConflicts.vb
3 729 строк128 KB
Ankita Khera
Allow submitting rename conflicts and rename unambiguous erroneous references (#84686)
30 июл 2026, 03:23
30 июл 2026, 03:237970a5a
' 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.Rename.ConflictEngine

Namespace Microsoft.CodeAnalysis.Editor.UnitTests.Rename
    Partial Public Class RenameEngineTests
        <UseExportProvider>
        <Trait(Traits.Feature, Traits.Features.Rename)>
        Public Class CSharpConflicts
            Private ReadOnly _outputHelper As Abstractions.ITestOutputHelper

            Public Sub New(outputHelper As Abstractions.ITestOutputHelper)
                _outputHelper = outputHelper
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameMethodReferenceWithUnboundArgument(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    static void Main(string[] args)
    {
        [|Test|](x);
        [|Test|](1);
    }

    static void [|$$Test|](int number)
    {
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Test2")
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameMethodDoesNotRenameAmbiguousReferenceWithUnboundArgument(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    static void Main(string[] args)
    {
        Test(x);
        [|Test|](1);
    }

    static void [|$$Test|](int number)
    {
    }

    static void Test(string value)
    {
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Test2")

                    Dim documentText = result.ConflictResolution.NewSolution.Projects.Single().Documents.Single().GetTextAsync().Result.ToString()
                    Assert.Contains("Test(x);", documentText)
                    Assert.Contains("Test2(1);", documentText)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameTypeReferenceWithUnboundConstructorArgument(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
record [|$$MyRecord|](int Number);

class Program
{
    static void Main(string[] args)
    {
        var r = new [|MyRecord|](x);
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="MyRecord2")
                End Using
            End Sub

            <WpfTheory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/773543")>
            <CombinatorialData>
            Public Sub BreakingRenameWithRollBacksInsideLambdas_2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

class C
{
    class D { public int x = 1; }
    Action&lt;int> a = (int [|$$x|]) => // Rename x to y
                    {
                        var {|Conflict:y|} = new D();
                        Console.{|Conflict:WriteLine|}({|Conflict:x|});
                    };
 
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="y")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/773534")>
            <CombinatorialData>
            Public Sub BreakingRenameWithRollBacksInsideLambdas_1(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

struct y
{
    public int x;
}
class C
{
    class D { public int x = 1; }
    Action&lt;y> a = (y [|$$x|]) => // Rename x to y
                    {   var {|Conflict:y|} = new D();
                        Console.WriteLine(y.x);
                        Console.WriteLine({|Conflict:x|}.{|Conflict:x|});
                    };
 
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="y")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/773435")>
            <CombinatorialData>
            Public Sub BreakingRenameWithInvocationOnDelegateInstance(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    public delegate void Foo(int x);
    public void FooMeth(int x)
    {
 
    }
    public void Sub()
    {
        Foo {|Conflict:x|} = new Foo(FooMeth);
        int [|$$z|] = 1; // Rename z to x
        int y = {|Conflict:z|};
        x({|Conflict:z|}); // Renamed to x(x)
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="x")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/782020")>
            <CombinatorialData>
            Public Sub BreakingRenameWithSameClassInOneNamespace(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using K = N.{|Conflict:C|}; // No change, show compiler error
namespace N
{
    class {|Conflict:C|}
    {
    }
}
namespace N
{
    class {|Conflict:$$D|} // Rename D to C
    {
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="C")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub BreakingRenameCrossAssembly(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="Visual Basic" CommonReferences="true" AssemblyName="VBAssembly1">
                            <ProjectReference>CSAssembly1</ProjectReference>
                            <Document>
Class D
    Public Sub Boo()
        Dim x = New {|Conflict:$$C|}()
    End Sub
End Class
                            </Document>
                        </Project>
                        <Project Language="C#" CommonReferences="true" AssemblyName="CSAssembly1">
                            <Document>
public class [|C|]
{
    public static void Foo()
    {

    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="D")

                    result.AssertLabeledSpansAre("Conflict", "D", RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInsideLambdaBody(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

class Proaasgram
{
    object z;
    public void masdain(string[] args)
    {
        Func&lt;int, bool> sx = (int [|$$x|]) =>
        {
            {|resolve:z|} = null;
            if (true)
            {
                bool y = foo([|x|]);
            }
            return true;
        };
    }

    public  bool foo(int bar)
    {
        return true;
    }

    public bool foo(object bar)
    {
        return true;
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="z")

                    result.AssertLabeledSpansAre("resolve", "this.z = null;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1069237")>
            <CombinatorialData>
            Public Sub ConflictResolutionInsideExpressionBodiedLambda(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;
using System.Collections.Generic;
using System.Linq;

public class B
{
    public readonly int z = 0;
    public int X(int [|$$x|]) => {|direct:x|} + {|resolve:z|};
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="z")

                    result.AssertLabeledSpansAre("direct", "z + this.z", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve", "z + this.z", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1069237")>
            <CombinatorialData>
            Public Sub ConflictResolutionInsideExpressionBodiedLambda2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;
using System.Collections.Generic;
using System.Linq;

public class B
{
    public static readonly int z = 0;
    public int X(int [|$$x|]) => {|direct:x|} + {|resolve:z|};
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="z")

                    result.AssertLabeledSpansAre("direct", "z + B.z", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve", "z + B.z", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInsideMethodBody(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;
using System.Collections.Generic;
using System.Linq;

public class B
{
    public readonly int z = 0;
    public int Y(int [|$$y|]) 
    { 
        [|y|] = 0;
        return {|resolve:z|}; 
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="z")

                    result.AssertLabeledSpansAre("resolve", "return this.z;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInInvocationWithLambda_1(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

static class C
{
    static void Ex(this string x) { }

    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }

    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }

    static void Main()
    {
        {|resolve1:Outer|}(y => {|resolve2:Inner|}(x => {
                                  var z = 5;
z.{|resolve0:Ex|}();
x.Ex();
                                  }, y), 0);
    }
}

static class E
{
    public static void [|$$Ex|](this int x) { } // Rename Ex to Foo
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="L")

                    Dim outputResult = <code>Outer((string y) => Inner(x => {</code>.Value + vbCrLf +
                                       <code>                                  var z = 5;</code>.Value + vbCrLf +
                                       <code>z.L();</code>.Value + vbCrLf +
                                       <code>x.Ex();</code>.Value + vbCrLf +
                                       <code>                                  }, y), 0);</code>.Value

                    result.AssertLabeledSpansAre("resolve0", outputResult, RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve1", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolve2", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInInvocationWithLambda_2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

static class C
{
    static void Ex(this string x) { }

    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }

    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }

    static void Main()
    {
        {|resolve1:Outer|}((y) => {|resolve2:Inner|}((x) => {
                                  var z = 5;
z.{|resolve0:Ex|}();
x.Ex();
                                  }, y), 0);
    }
}

static class E
{
    public static void [|$$Ex|](this int x) { } // Rename Ex to Foo
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="L")

                    Dim outputResult = <code>Outer((string y) => Inner((x) => {</code>.Value + vbCrLf +
                                       <code>                                  var z = 5;</code>.Value + vbCrLf +
                                       <code>z.L();</code>.Value + vbCrLf +
                                       <code>x.Ex();</code>.Value + vbCrLf +
                                       <code>                                  }, y), 0);</code>.Value

                    result.AssertLabeledSpansAre("resolve0", outputResult, RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve1", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolve2", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInInvocationWithLambda_3(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

static class C
{
    static void Ex(this string x) { }

    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }

    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }

    static void Main()
    {
        {|resolve1:Outer|}((y) => {|resolve2:Inner|}((x) => {
                                  var z = 5;
z.{|resolve0:D|}();
x.Ex();
                                  }, y), 0);
    }
}

static class E
{
    public static void [|$$D|](this int x) { } // Rename Ex to Foo
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Ex")

                    Dim outputResult = <code>Outer((y) => Inner((string x) => {</code>.Value + vbCrLf +
                                       <code>                                  var z = 5;</code>.Value + vbCrLf +
                                       <code>z.Ex();</code>.Value + vbCrLf +
                                       <code>x.Ex();</code>.Value + vbCrLf +
                                       <code>                                  }, y), 0);</code>.Value

                    result.AssertLabeledSpansAre("resolve0", outputResult, RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve1", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolve2", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInInvocationWithLambda_4(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

static class C
{
    static void Ex(this string x) { }

    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }

    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }

    static void Main()
    {
        {|resolve1:Outer|}(y => {|resolve2:Inner|}(x => {
                                  var z = 5;
z.{|resolve0:D|}();
x.Ex();
                                  }, y), 0);
    }
}

static class E
{
    public static void [|$$D|](this int x) { } // Rename Ex to Foo
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Ex")

                    Dim outputResult = <code>Outer(y => Inner((string x) => {</code>.Value + vbCrLf +
                                       <code>                                  var z = 5;</code>.Value + vbCrLf +
                                       <code>z.Ex();</code>.Value + vbCrLf +
                                       <code>x.Ex();</code>.Value + vbCrLf +
                                       <code>                                  }, y), 0);</code>.Value

                    result.AssertLabeledSpansAre("resolve0", outputResult, RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve1", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolve2", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ConflictResolutionInInvocationWithLambda_5(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System;

static class C
{
    static void Ex(this string x) { }

    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }

    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }

    static void Main()
    {
        {|resolve1:Outer|}(y => {|resolve2:Inner|}(x => {
                                  var z = 5;
                                  z.{|resolve0:D|}();
                                  x.Ex();
                                  }, y), 0);
    }
}

static class E
{
    public static void [|$$D|](this int x) { } // Rename Ex to Foo
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Ex")

                    Dim outputResult = <code>Outer(y => Inner((string x) => {</code>.Value + vbCrLf +
                                       <code>                                  var z = 5;</code>.Value + vbCrLf +
                                       <code>                                  z.Ex();</code>.Value + vbCrLf +
                                       <code>                                  x.Ex();</code>.Value + vbCrLf +
                                       <code>                                  }, y), 0);</code>.Value

                    result.AssertLabeledSpansAre("resolve0", outputResult, RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolve1", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolve2", outputResult, RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ParameterConflictingWithInstanceField1(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Foo
{
    int foo;
    void Blah(int [|$$bar|])
    {
        {|stmt2:foo|} = {|stmt1:bar|};
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="foo")

                    result.AssertLabeledSpansAre("stmt1", "this.foo = foo;", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("stmt2", "this.foo = foo;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ParameterConflictingWithInstanceField2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Foo
{
    int foo;
    void Blah(int [|$$bar|])
    {
        {|resolved:foo|} = 23;
        {|resolved2:foo|} = {|stmt1:bar|};
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="foo")

                    result.AssertLabeledSpansAre("stmt1", "this.foo = foo;", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("resolved", "this.foo = 23;", RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("resolved2", "this.foo = foo;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ParameterConflictingWithInstanceFieldRenamingToKeyword(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Foo
{
    int @if;
    void Blah(int {|Escape1:$$bar|})
    {
        {|Resolve:@if|} = 23;
        {|Resolve2:@if|} = {|Escape2:bar|};
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="if")

                    result.AssertLabeledSpansAre("Resolve", "this.@if = 23;", RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpecialSpansAre("Escape1", "@if", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpecialSpansAre("Escape2", "this.@if = @if;", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("Resolve2", "this.@if = @if;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ParameterConflictingWithStaticField(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Foo
{
    static int foo;
    void Blah(int [|$$bar|])
    {
        {|Resolved:foo|} = 23;
        {|Resolved2:foo|} = {|stmt1:bar|};
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="foo")

                    result.AssertLabeledSpansAre("Resolved", "Foo.foo = 23;", RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("stmt1", "Foo.foo = foo;", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("Resolved2", "Foo.foo = foo;", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub ParameterConflictingWithFieldFromAnotherLanguage(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <ProjectReference>VisualBasicAssembly</ProjectReference>
                            <Document>
class Foo : FooBase
{
    void Blah(int bar)
    {
        {|Resolve:$$foo|} = bar;
    }
}
                           </Document>
                        </Project>
                        <Project Language="Visual Basic" AssemblyName="VisualBasicAssembly" CommonReferences="true">
                            <Document>
Public Class FooBase
    Protected [|foo|] As Integer
End Class
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="bar")

                    result.AssertLabeledSpansAre("Resolve", "base.bar = bar;", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539745")>
            <CombinatorialData>
            Public Sub ConflictingTypeDeclaration(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true" LanguageVersion="6">
                            <Document><![CDATA[
namespace N1
{
    using static C<int>;

    class Program
    {
        public void Goo(int i)
        {
            {|ReplacementCInt:Foo|}(i, i);
        }
    }
}

namespace N2
{
    using static C<string>;

    class Program
    {
        public void Goo(string s)
        {
            {|ReplacementCString:Foo|}(s, s);
        }
    }
}

static class C<T>
{
    public static void [|$$Foo|](T i, T j) { }
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Goo")

                    result.AssertLabeledSpansAre("ReplacementCInt", "C<int>.Goo(i, i);", RelatedLocationType.ResolvedReferenceConflict)
                    result.AssertLabeledSpansAre("ReplacementCString", "C<string>.Goo(s, s);", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenamingToInvalidIdentifier(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class {|Invalid:$$Foo|}
{
    {|Invalid:Foo|} foo;
}
                               </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="`")

                    result.AssertLabeledSpansAre("Invalid", "`", RelatedLocationType.UnresolvedConflict)
                    result.AssertReplacementTextInvalid()
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenamingToInvalidIdentifier2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class {|Invalid:$$Foo|}
{
    {|Invalid:Foo|} foo;
}
                               </Document>
                        </Project>
                    </Workspace>, host:=host,
                   renameTo:="!")

                    result.AssertLabeledSpansAre("Invalid", "!", RelatedLocationType.UnresolvedConflict)
                    result.AssertReplacementTextInvalid()
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539636")>
            <CombinatorialData>
            Public Sub RenamingToConflictingMethodInvocation(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    static void F()
    {
    }

    class Blah
    {
        void [|$$M|]()
        {
            {|Replacement:F|}();
        }
    }
} 
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="F")

                    result.AssertLabeledSpansAre("Replacement", "Program.F();", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenamingToConflictingMethodInvocation2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    void M()
    {
        int foo;
        {|Replacement:Bar|}();
    }

    void [|$$Bar|]()
    {
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="foo")

                    result.AssertLabeledSpansAre("Replacement", "this.foo();", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539733")>
            <CombinatorialData>
            Public Sub RenamingTypeToConflictingMemberAndParentTypeName(host As RenameTestHost)
                ' It's important that we see conflicts for both simultaneously, so I do a single
                ' test for both cases.
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class {|Conflict:Foo|}
{
    class [|$$Bar|]
    {
        int {|Conflict:Foo|};
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539733")>
            <CombinatorialData>
            Public Sub RenamingMemberToNameConflictingWithParent(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class {|Conflict:Foo|}
{
    int [|$$Bar|];
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo")

                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/540199")>
            <CombinatorialData>
            Public Sub RenamingMemberToInvalidIdentifierName(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class {|Invalid:$$Foo|}
{
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo@")

                    result.AssertReplacementTextInvalid()
                    result.AssertLabeledSpansAre("Invalid", "Foo@", RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub MinimalQualificationOfBaseType1(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class X
{
    protected class [|$$A|] { }
}

class Y : X
{
    private class C : {|Resolve:A|} { }
    private class B { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="B")

                    result.AssertLabeledSpansAre("Resolve", "X.B", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub MinimalQualificationOfBaseType2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class X
{
    protected class A { }
}

class Y : X
{
    private class C : {|Resolve:A|} { }
    private class [|$$B|] { }
}
                               </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="A")

                    result.AssertLabeledSpansAre("Resolve", "X.A", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542322")>
            Public Sub EscapeIfKeywordWhenDoingTypeNameQualification(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
static class Foo
{
    static void {|Escape:Method$$|}() { }

    static void Test()
    {
        int @if;
        {|Replacement:Method|}();
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="if")

                    result.AssertLabeledSpecialSpansAre("Escape", "@if", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("Replacement", "Foo.@if();", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542322")>
            Public Sub EscapeUnboundGenericTypesInTypeOfContext(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[

using C = A<int>;

class A<T>
{
    public class B<S> { }
}

class Program
{
    static void Main()
    {
        var type = typeof({|stmt1:C|}.B<>);
    }

    class [|D$$|] { }
}

                               ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="C")

                    result.AssertLabeledSpansAre("stmt1", "var type = typeof(A<>.B<>);", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542322")>
            Public Sub EscapeUnboundGenericTypesInTypeOfContext2(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
using C = A<int>;

class A<T>
{
    public class B<S>
    {
        public class E { }
    }
}

class Program
{
    static void Main()
    {
        var type = typeof({|Replacement:C|}.B<>.E);
    }

    class [|D$$|] { }
}
                               ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="C")

                    result.AssertLabeledSpansAre("Replacement", "var type = typeof(A<>.B<>.E);", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542322")>
            Public Sub EscapeUnboundGenericTypesInTypeOfContext3(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
using C = A<int>;

class A<T>
{
    public class B<S>
    {
        public class E { }
    }
}

class Program
{
    static void Main()
    {
        var type = typeof({|Replacement:C|}.B<>.E);
    }

    class [|D$$|] 
    {
        public class B<S>
        {
            public class E { }
        }
    }
}
                               ]]></Document>
                        </Project>
                    </Workspace>, host:=host,
                   renameTo:="C")

                    result.AssertLabeledSpansAre("Replacement", "var type = typeof(A<>.B<>.E);", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542651")>
            Public Sub ReplaceAliasWithGenericTypeThatIncludesArrays(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
using C = A<int[]>;

class A<T> { }

class Program
{
    {|Resolve:C|} x;

    class [|D$$|] { }
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host,
                   renameTo:="C")

                    result.AssertLabeledSpansAre("Resolve", "A<int[]>", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542651")>
            Public Sub ReplaceAliasWithGenericTypeThatIncludesPointers(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
using C = A<int*>;

class A<T> { }

class Program
{
    {|Resolve:C|} x;

    class [|D$$|] { }
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host,
                   renameTo:="C")

                    result.AssertLabeledSpansAre("Resolve", "A<int*>", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542651")>
            Public Sub ReplaceAliasWithNestedGenericType(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
using C = A<int>.E;

class A<T>
{
    public class E { }
}

class B
{
    {|Resolve:C|} x;

    class [|D$$|] { } // Rename D to C
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="C")

                    result.AssertLabeledSpansAre("Resolve", "A<int>.E", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535068")>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542103")>
            <WorkItem("https://github.com/dotnet/roslyn/issues/8334")>
            Public Sub RewriteConflictingExtensionMethodCallSite(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    C Bar(int tag)
    {
        return this.{|stmt1:Foo|}(1).{|stmt1:Foo|}(2);
    }
}


static class E
{
    public static C [|$$Foo|](this C x, int tag) { return new C(); }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Bar")

                    result.AssertLabeledSpansAre("stmt1", "return E.Bar(E.Bar(this, 1), 2);", RelatedLocationType.ResolvedReferenceConflict)
                End Using
            End Sub

            <Theory, CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535068")>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/528902")>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/645152")>
            <WorkItem("https://github.com/dotnet/roslyn/issues/8334")>
            Public Sub RewriteConflictingExtensionMethodCallSiteWithReturnTypeChange(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    void [|$$Bar|](int tag)
    {
        this.{|Resolved:Foo|}(1).{|Resolved:Foo|}(2);
    }
}

static class E
{
    public static C Foo(this C x, int tag) { return x; }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo")

                    result.AssertLabeledSpansAre("Resolved", "E.Foo(E.Foo(this, 1), 2);", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub

            <WpfTheory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535068")>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542821")>
            Public Sub RewriteConflictingExtensionMethodCallSiteRequiringTypeArguments(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
class C
{
    void [|$$Bar|]<T>()
    {
        {|Replacement:this.{|Resolved:Foo|}<int>()|};
    }
}
 
 
static class E
{
    public static void Foo<T>(this C x) { }
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo")

                    result.AssertLabeledSpansAre("Resolved", type:=RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("Replacement", "E.Foo<int>(this)")
                End Using
            End Sub

            <WpfTheory>
            <CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535068")>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542103")>
            Public Sub RewriteConflictingExtensionMethodCallSiteInferredTypeArguments(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document><![CDATA[
class C
{
    void [|$$Bar|]<T>(T y)
    {
        {|Replacement:this.{|Resolved:Foo|}(42)|};
    }
}
 
 
static class E
{
    public static void Foo<T>(this C x, T y) { }
}
                            ]]></Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Foo")

                    result.AssertLabeledSpansAre("Resolved", type:=RelatedLocationType.ResolvedNonReferenceConflict)
                    result.AssertLabeledSpansAre("Replacement", "E.Foo(this, 42)")
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub DoNotDetectQueryContinuationNamedTheSame(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
using System.Linq;
class C
{
    static void Main(string[] args)
    {
        var temp = from {|stmt1:$$x|} in "abc"
                   select {|stmt1:x|} into y
                   select y;
    }
}

                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="y")

                    ' This may feel strange, but the "into" effectively splits scopes
                    ' into two. There are no errors here.
                    result.AssertLabeledSpansAre("stmt1", "y", RelatedLocationType.NoConflict)
                End Using
            End Sub

            <Theory, CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/543027")>
            <CombinatorialData>
            Public Sub RenameHandlesUsingWithoutDeclaration(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>

using System.IO;
class Program
{
    public static void Main(string[] args)
    {
        Stream {|stmt1:$$s|} = new Stream();
        using ({|stmt2:s|})
        {
        }
    }
}
                       </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="x")

                    result.AssertLabeledSpansAre("stmt1", "x", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("stmt2", "x", RelatedLocationType.NoConflict)
                End Using
            End Sub

            <Theory, CombinatorialData>
            <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/543027")>
            <CombinatorialData>
            Public Sub RenameHandlesForWithoutDeclaration(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>

class Program
{
    public static void Main(string[] args)
    {
        int {|stmt1:$$i|};
        for ({|stmt2:i|} = 0; ; )
        {
        }
    }
}
                       </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="x")

                    result.AssertLabeledSpansAre("stmt1", "x", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("stmt2", "x", RelatedLocationType.NoConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameAttributeSuffix(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
using System;

[{|Special:Something|}()]
class Foo{ }

public class [|$$SomethingAttribute|] : Attribute
{
    public [|SomethingAttribute|]() { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="SpecialAttribute")

                    result.AssertLabeledSpansAre("Special", "Special", type:=RelatedLocationType.NoConflict)
                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameAddAttributeSuffix(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
using System;

[[|Something|]()]
class Foo{ }

public class [|$$SomethingAttribute|] : Attribute
{
    public [|SomethingAttribute|]() { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Special")

                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameKeepAttributeSuffixOnUsages(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
using System;

[[|SomethingAttribute|]()]
class Foo { }

public class [|$$SomethingAttribute|] : Attribute
{
    public [|SomethingAttribute|] { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="FooAttribute")

                End Using
            End Sub

            <Theory>
            <CombinatorialData>
            Public Sub RenameToConflictWithValue(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
class C
{
    public int TestProperty
    {
        set
        {
            int [|$$x|];
            [|x|] = {|Conflict:value|};
        }
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="value")

                    ' result.AssertLabeledSpansAre("stmt1", "value", RelatedLocationType.NoConflict)
                    ' result.AssertLabeledSpansAre("stmt2", "value", RelatedLocationType.NoConflict)
                    result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/543482")>
            <CombinatorialData>
            Public Sub RenameAttributeWithConflictingUse(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
class C
{
    [Main()]
    static void test() { }
}
class MainAttribute : System.Attribute
{
    static void Main() { }
}
class [|$$Main|] : System.Attribute
{
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="FooAttribute")

                End Using
            End Sub

            <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542649")>
            <CombinatorialData>
            Public Sub QualifyTypeWithGlobalWhenConflicting(host As RenameTestHost)
                Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document FilePath="Test.cs">
class A { }

class B
{
    {|Resolve:A|} x;

    class [|$$C|] { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="A")

                    result.AssertLabeledSpansAre("Resolve", "global::A", RelatedLocationType.ResolvedNonReferenceConflict)
                End Using
            End Sub
        End Class

        <Theory, CombinatorialData>
        Public Sub RenameSymbolDoesNotConflictWithNestedLocals(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
class C
{
    void Foo()
    {
        { int x; }
        {|Stmt1:Bar|}();
    }
 
    void [|$$Bar|]() { }
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="x")

                result.AssertLabeledSpansAre("Stmt1", "x();", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameSymbolConflictWithLocals(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
class C
{
    void Foo()
    {
        int x;
        {|Stmt1:Bar|}();
    }
 
    void [|$$Bar|]() { }
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="x")

                result.AssertLabeledSpansAre("Stmt1", "this.x();", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/528738")>
        Public Sub RenameAliasToCatchConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using [|$$A|] = X.Something;
using {|Conflict:B|} = X.SomethingElse;

namespace X
{
    class Something { }
    class SomethingElse { }
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="B")

                result.AssertLabeledSpansAre("Conflict", "B", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameAttributeToCreateConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
[{|Escape:Main|}]
class Some
{
}
class SpecialAttribute : Attribute
{
}
class [|$$Main|] : Attribute // Rename 'Main' to 'Special'
{
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Special")

                result.AssertLabeledSpecialSpansAre("Escape", "@Special", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameUsingToKeyword(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
using [|$$S|] = System.Collections;
[A]
class A : {|Resolve:Attribute|}
{
}
class B
{
	[|S|].ArrayList a;
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Attribute")

                result.AssertLabeledSpansAre("Resolve", "System.Attribute", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv_Projects/Roslyn/_workitems/edit/16809")>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535066")>
        Public Sub RenameInNestedClasses(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
namespace N
{
    class A<T>
    {
        public virtual void Foo(T x) { }
        class B<S> : A<B<S>>
        {
            class [|$$C|]<U> : B<{|Resolve1:C|}<U>> // Rename C to A
            {
                public override void Foo({|Resolve2:A|}<{|Resolve3:A|}<T>.B<S>>.B<{|Resolve4:A|}<T>.B<S>.{|Resolve1:C|}<U>> x) { }
            }
        }
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="A")

                result.AssertLabeledSpansAre("Resolve1", "A", RelatedLocationType.NoConflict)
                result.AssertLabeledSpansAre("Resolve2", "N.A<N.A<T>.B<S>>", RelatedLocationType.ResolvedNonReferenceConflict)
                result.AssertLabeledSpansAre("Resolve3", "N.A<N.A<T>.B<S>>", RelatedLocationType.ResolvedNonReferenceConflict)
                result.AssertLabeledSpansAre("Resolve4", "N.A<T>", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/535066")>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531433")>
        <CombinatorialData>
        Public Sub RenameAndEscapeContextualKeywordsInCSharp(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System.Linq;

class [|t$$o|] // Rename 'to' to 'from'
{
    object q = from x in "" select new {|resolved:to|}();
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="from")

                result.AssertLabeledSpansAre("resolved", "@from", RelatedLocationType.NoConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/522774")>
        Public Sub RenameCrefWithConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
using F = N;
namespace N
{
    interface I
    {
       void Foo();
    }
}
class C
{
    class E : {|Resolve:F|}.I
    {
        /// <summary>
        /// This is a function <see cref="{|Resolve:F|}.I.Foo"/>
        /// </summary>
        public void Foo() { }
    }
    class [|$$K|]
    {
    }
}
                           ]]></Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="F")

                result.AssertLabeledSpansAre("Resolve", "N", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameClassContainingAlias(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
using C = A<int,int>;
class A<T,U>  
{
    public class B<S> 
    {
    }   
}
class [|$$B|]
{
    {|Resolve:C|}.B<int> cb;
}
                           ]]></Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="C")

                result.AssertLabeledSpansAre("Resolve", "A<int, int>", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameFunctionWithOverloadConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
class Bar
    {
        void Foo(int x) { }
        void [|Boo|](object x) { }
        void Some()
        {
            Foo(1);
            {|Resolve:$$Boo|}(1);
        }
    }
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("Resolve", "Foo((object)1);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameActionWithFunctionConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
class Program
{
    static void doer(int x)
    {
        Console.WriteLine("Hey");
    }
    static void Main(string[] args)
    {
        Action<int> {|stmt1:$$action|} = delegate(int x) { Console.WriteLine(x); }; // Rename action to doer
        {|stmt2:doer|}(3);
    }
}
                           ]]></Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="doer")

                result.AssertLabeledSpansAre("stmt1", "doer", RelatedLocationType.NoConflict)
                result.AssertLabeledSpansAre("stmt2", "Program.doer(3);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/552522")>
        Public Sub RenameFunctionNameToDelegateTypeConflict1(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
class A 
{
    static void [|Foo|]() { }  
    class B
    {
        delegate void Del();
        void Boo()
        {
            Del d = new Del({|Stmt1:Foo|});
            {|Stmt2:$$Foo|}();
        }
    }
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Del")

                result.AssertLabeledSpansAre("Stmt1", "Del d = new Del(A.Del);", RelatedLocationType.ResolvedReferenceConflict)
                result.AssertLabeledSpansAre("Stmt2", "Del", RelatedLocationType.NoConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/552520")>
        Public Sub RenameFunctionNameToDelegateTypeConflict2(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
class A
{
    static void [|$$Foo|]() { }
    class B
    {
        delegate void Del();
        void Bar() { }
        void Boo()
        {
            Del d = new Del({|Stmt1:Foo|});
        }
    }
}
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Bar")

                result.AssertLabeledSpansAre("Stmt1", "Del d = new Del(A.Bar);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameFunctionNameToDelegateTypeConflict3(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;                            
class A
{
    delegate void Del(Del a);
    static void [|Bar|](Del a) { }
    class B
    {
        Del Boo = new Del({|decl1:Bar|});
        void Foo()
        {
            Boo({|Stmt2:Bar|});
            {|Stmt3:$$Bar|}(Boo);
        }
    }
}                      
                            </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Boo")

                result.AssertLabeledSpansAre("decl1", "new Del(A.Boo)", RelatedLocationType.ResolvedReferenceConflict)
                result.AssertLabeledSpansAre("Stmt2", "Boo(A.Boo);", RelatedLocationType.ResolvedReferenceConflict)
                result.AssertLabeledSpansAre("Stmt3", "A.Boo(Boo);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/552520")>
        Public Sub RenameFunctionNameToDelegateTypeConflict4(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;

class A
{
    static void Foo(int i) { }
    static void Foo(string s) { }
    
    class B
    {
        delegate void Del(string s);
        void [|$$Bar|](string s) { }
        void Boo()
        {
            Del d = new Del({|stmt1:Foo|});
        }
    }
}
                       </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Del d = new Del(A.Foo);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/552722")>
        Public Sub RenameActionTypeConflict(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
class A
{
    static Action<int> [|$$Baz|] = (int x) => { };    
    class B
    {
        Action<int> Bar = (int x) => { };
        void Foo()
        {
            {|Stmt1:Baz|}(3);            
        }
    }
}]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Bar")

                result.AssertLabeledSpansAre("Stmt1", "A.Bar(3);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/552722")>
        Public Sub RenameConflictAttribute1(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
[{|escape:Bar|}]
class Bar : System.Attribute  
{ }

class [|$$FooAttribute|] : System.Attribute 
{ }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="BarAttribute")

                result.AssertLabeledSpansAre("escape", "@Bar", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub RenameConflictAttribute2(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
[{|Resolve:B|}]
class [|$$BAttribute|] : Attribute
{
}
class AAttributeAttribute : Attribute
{
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="AAttribute")

                result.AssertLabeledSpecialSpansAre("Resolve", "A", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/576573")>
        Public Sub Bug576573_ConflictAttributeWithNamespace(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;

namespace X
{
    class BAttribute
        : System.Attribute
    { }

    namespace Y.[|$$Z|]
    {

        [{|Resolve:B|}]
        class Foo { }    
    }
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="BAttribute")

                result.AssertLabeledSpansAre("Resolve", "X.B", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/579602")>
        Public Sub Bug579602_RenameFunctionWithDynamicParameter(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;

class A
{    
    class B
    {        
        public void [|Boo|](int d) { } //Line 1    
    }
    
    void Bar()    
    {        
        B b = new B();
        dynamic d = 1.5f;
        b.{|stmt1:$$Boo|}(d); //Line 2 Rename Boo to Foo    
    }
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo", RelatedLocationType.NoConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        Public Sub IdentifyConflictsWithVar(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

class [|$$vor|]
{
    static void Main(string[] args)
    {
        {|conflict:var|} x = 23;
    }
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="v\u0061r")

                result.AssertLabeledSpansAre("conflict", "var", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/633180")>
        Public Sub CS_DetectOverLoadResolutionChangesInEnclosingInvocations(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
 
static class C
{
    static void Ex(this string x) { }
 
    static void Outer(Action&lt;string> x, object y) { Console.WriteLine(1); }
    static void Outer(Action&lt;int> x, int y) { Console.WriteLine(2); }
 
    static void Inner(Action&lt;string> x, string y) { }
    static void Inner(Action&lt;string> x, int y) { }
    static void Inner(Action&lt;int> x, int y) { }
 
    static void Main()
    {
       {|resolved:Outer|}(y => {|resolved:Inner|}(x => x.Ex(), y), 0);
    }
}
 
static class E
{
    public static void [|$$Ex|](this int x) { } // Rename Ex to Foo
}

                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("resolved", "Outer((string y) => Inner(x => x.Ex(), y), 0);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/635622")>
        Public Sub ExpandingDynamicAddsObjectCast(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
 
class C
{
    static void [|$$Foo|](int x, Action y) { } // Rename Foo to Bar
    static void Bar(dynamic x, Action y) { }
 
    static void Main()
    {
        {|resolve:Bar|}(1, Console.WriteLine);
    }
}


                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Bar")

                result.AssertLabeledSpansAre("resolve", "Bar((object)1, Console.WriteLine);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/673562")>
        Public Sub RenameNamespaceConflictsAndResolves(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;
 
namespace N
{
    class C
    {
        {|resolve:N|}.C x;
        /// &lt;see cref="{|resolve:N|}.C"/&gt;
        void Sub()
        { }
    }
    namespace [|$$K|] // Rename K to N
    {
        class C
        { }
    }
}


                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("resolve", "global::N", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/673667")>
        Public Sub RenameUnnecessaryExpansion(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
namespace N
{
    using K = {|stmt1:N|}.C;
    class C
    {
    }
    class [|$$D|] // Rename D to N
    {
        class C
        {
            [|D|] x;
        }
    }
}


                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("stmt1", "global::N", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/768910")>
        Public Sub RenameInCrefPreservesWhitespaceTrivia(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
                            <![CDATA[
public class A
{
	public class B
	{
		public class C
		{

		}

		/// <summary>
		/// <see cref=" {|Resolve:D|}"/>  
		/// </summary>
		public static void [|$$foo|]() // Rename foo to D
		{
		}
	}
	public class D
	{
	}
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="D")

                result.AssertLabeledSpansAre("Resolve", "A.D", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

#Region "Type Argument Expand/Reduce for Generic Method Calls - 639136"
        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;

class C
{
    static void F&lt;T&gt;(Func&lt;int, T&gt; x) { }
    static void [|$$B|](Func&lt;int, int&gt; x) { } // Rename Bar to Foo

    static void Main()
    {
        {|stmt1:F|}(a => a);
    }
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="F")

                result.AssertLabeledSpansAre("stmt1", "F<int>(a => a);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/725934")>
        Public Sub GenericNameTypeInferenceExpansion_This(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs">
using System;

class C
{
    void TestMethod()
    {
        int x = 1;
        Func&lt;int&gt; y = delegate { return {|stmt1:Foo|}(x); };
    }

    int Foo&lt;T&gt;(T x) { return 1; }
    int [|$$Bar|](int x) { return 1; }
}
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "return Foo<int>(x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_Nested(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public static void [|$$Foo|]<T>(T x) { }
    public static void Bar(int x) { }
    class D
    {
        void Bar<T>(T x) { }
        void Bar(int x) { }
        void sub()
        {
            {|stmt1:Foo|}(1);
        }
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Bar")

                result.AssertLabeledSpansAre("stmt1", "C.Bar<int>(1);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub
        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_ReferenceType(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](string x) {return 1; } // Rename Bar to Foo
    public void Test()
    {
        string one = "1";
        {|stmt1:Foo|}(one);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<string>(one);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_ConstructedTypeArgumentNonGenericContainer(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public static void Foo<T>(T x) { }
    public static void [|$$Bar|](D<int> x) { } // Rename Bar to Foo
    public void Sub()
    {
        D<int> x = new D<int>();
        {|stmt1:Foo|}(x); 
    }
}

class D<T>
{}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<D<int>>(x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_SameTypeParameter(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System.Linq.Expressions;
class C
{
    public static int Foo<T>(T x) { return 1; }
    public static int [|$$Bar|]<T>(Expression<Func<int, T>> x) { return 1; }
    Expression<Func<int, int>> x = (y) => Foo(1);
    public void sub()
    {
        {|stmt1:Foo|}(x);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<Expression<Func<int, int>>>(x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_ArrayTypeParameter(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void [|$$Foo|]<S>(S x) { }
    public void Bar(int[] x) { }
    public void Sub()
    {
        var x = new int[] { 1, 2, 3 };
        {|stmt1:Foo|}(x);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Bar")

                result.AssertLabeledSpansAre("stmt1", "Bar<int[]>(x);", RelatedLocationType.ResolvedReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_MultiDArrayTypeParameter(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void Foo<S>(S x) { }
    public void [|$$Bar|](int[,] x) { }
    public void Sub()
    {
        var x = new int[,] { { 1, 2 }, { 2, 3 }  };
        {|stmt1:Foo|}(x);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<int[,]>(x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_UsedAsArgument(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](int x) {return 1; }
    public void Sub(int x) { }
    public void Test()
    {
        Sub({|stmt1:Foo|}(1));
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Sub(Foo<int>(1));", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_UsedInConstructorInitialization(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public C(int x) { }
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](int x) {return 1; }
    public void Test()
    {
        C c = new C({|stmt1:Foo|}(1));
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "C c = new C(Foo<int>(1));", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_CalledOnObject(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](int x) {return 1; } // Rename Bar to Foo
    public void Test()
    {
        C c = new C();
        c.{|stmt1:Foo|}(1);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "c.Foo<int>(1);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_UsedInGenericDelegate(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    delegate int FooDel<T>(T x);
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](int x) {return 1; } // Rename Bar to Foo
    public void Test()
    {
        FooDel<int> foodel = new FooDel<int>({|stmt1:Foo|});
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "FooDel<int> foodel = new FooDel<int>(Foo<int>);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_UsedInNonGenericDelegate(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    delegate int FooDel(int x);
    public int Foo<T>(T x) { return 1; }
    public int [|$$Bar|](int x) {return 1; } // Rename Bar to Foo
    public void Test()
    {
        FooDel foodel = new FooDel({|stmt1:Foo|});
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "FooDel foodel = new FooDel(Foo<int>);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_MultipleTypeParameters(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void Foo<T, S>(T x, S y) { }
    public void [|$$Bar|]<U, P>(U[] x, P y) { }
    public void Sub()
    {
        int[] x;
        {|stmt1:Foo|}(x, new C());
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<int[], C>(x, new C());", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/730781")>
        Public Sub GenericNameTypeInferenceExpansion_ConflictInDerived(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void Foo<T>(T x) { }
}
class D : C
{
    public void [|$$Bar|](int x) { }
    public void Sub()
    {
        {|stmt1:Foo|}(1);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "base.Foo(1);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/728653")>
        Public Sub RenameGenericInvocationWithDynamicArgument(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void F<T>(T s) { }
    public void [|$$Bar|](int s) { } // Rename Bar to F
    public void sub()
    {
        dynamic x = 1;
        {|stmt1:F|}(x);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="F")

                result.AssertLabeledSpansAre("stmt1", "F", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/728646")>
        Public Sub ExpandInvocationInStaticMemberAccess(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public static void Foo<T>(T x) { }
    public static void [|$$Bar|](int x) { } // Rename Bar to Foo
    public void Sub()
    {
        
    }
}
 
class D
{
    public void Sub()
    {
        C.{|stmt1:Foo|}(1);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "C.Foo<int>(1);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/728628")>
        Public Sub RecursiveTypeParameterExpansionFail(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C<T>
{
    public static void Foo<T>(T x) { }
    public static void [|$$Bar|](C<int> x) { } // Rename Bar to Foo
    public void Sub()
    {
        C<int> x = new C<int>();
        {|stmt1:Foo|}(x); 
    }
}

]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<C<int>>(x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/728575")>
        Public Sub RenameCrefWithProperBracesForTypeInferenceAdditionToMethod(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{   
    public static void Zoo<T>(T x) { }
    /// <summary>
    /// <see cref="{|cref1:Zoo|}"/>
    /// </summary>
    /// <param name="x"></param>
    public void [|$$Too|](int x) { } // Rename to Zoo
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Zoo")

                result.AssertLabeledSpansAre("cref1", "Zoo{T}", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        Public Sub GenericNameTypeInferenceExpansion_GenericBase(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C<T>
{
    public static void Foo<T>(T x) { }
    public static void [|$$Bar|](int x) { } // Rename Bar to Foo
}

class D : C<int>
{
    public void Test()
    {
        {|stmt1:Foo|}(1);
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<int>(1);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/639136")>
        <WpfTheory(Skip:="Story 736967"), CombinatorialData>
        Public Sub GenericNameTypeInferenceExpansion_InErrorCode(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    public void Foo<T>(T y,out T x)
    {
        x = y;
    }
    public void [|$$Bar|](int y, out int x) // Rename Bar to Foo
    {
        x = 1;
    }
    public void Test()
    {
        int y = 1;
        int x;
        {|stmt1:Foo|}(y, x); // error in code, but Foo is bound to Foo<T>
    }
}

]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="Foo")

                result.AssertLabeledSpansAre("stmt1", "Foo<int>(y, x);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub
#End Region

        <Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1016652")>
        <CombinatorialData>
        Public Sub CS_ConflictBetweenTypeNamesInTypeConstraintSyntax(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document><![CDATA[
using System.Collections.Generic;

// rename INamespaceSymbol to ISymbol
public interface {|unresolved1:$$INamespaceSymbol|} { }

public interface {|DeclConflict:ISymbol|} { }

public interface IReferenceFinder { }

internal abstract partial class AbstractReferenceFinder<TSymbol> : IReferenceFinder
    where TSymbol : {|unresolved2:INamespaceSymbol|}
{

}]]></Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="ISymbol")

                result.AssertLabeledSpansAre("DeclConflict", type:=RelatedLocationType.UnresolvedConflict)
                result.AssertLabeledSpansAre("unresolved1", type:=RelatedLocationType.UnresolvedConflict)
                result.AssertLabeledSpansAre("unresolved2", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1193")>
        Public Sub MemberQualificationInNameOfUsesTypeName_StaticReferencingInstance(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    static void F(int [|$$z|])
    {
        string x = nameof({|ref:zoo|});
    }

    int zoo;
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="zoo")

                result.AssertLabeledSpansAre("ref", "string x = nameof(C.zoo);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1193")>
        Public Sub MemberQualificationInNameOfUsesTypeName_InstanceReferencingStatic(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    void F(int [|$$z|])
    {
        string x = nameof({|ref:zoo|});
    }

    static int zoo;
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="zoo")

                result.AssertLabeledSpansAre("ref", "string x = nameof(C.zoo);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1193")>
        Public Sub MemberQualificationInNameOfUsesTypeName_InstanceReferencingInstance(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    void F(int [|$$z|])
    {
        string x = nameof({|ref:zoo|});
    }

    int zoo;
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="zoo")

                result.AssertLabeledSpansAre("ref", "string x = nameof(C.zoo);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1193")>
        Public Sub MemberQualificationInNameOfMethodInvocationUsesThisDot(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    int zoo;

    void F(int [|$$z|])
    {
        string x = nameof({|ref:zoo|});
    }

    void nameof(int x) { }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="zoo")

                result.AssertLabeledSpansAre("ref", "string x = nameof(this.zoo);", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1053")>
        Public Sub RenameComplexifiesInLambdaBodyExpression(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    static int [|$$M|](int b) => 5;
    static int N(long b) => 5;
    System.Func<int, int> a = d => {|resolved:N|}(1);
    System.Func<int> b = () => {|resolved:N|}(1);
}]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("resolved", "N((long)1)", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1053")>
        Public Sub RenameComplexifiesInExpressionBodiedMembers(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class C
{
    int f = new C().{|resolved1:N|}(0);
    int [|$$M|](int b) => {|resolved2:N|}(0);
    int N(long b) => [|M|](0);
    int P => {|resolved2:N|}(0);
}]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("resolved1", "new C().N((long)0)", RelatedLocationType.ResolvedNonReferenceConflict)
                result.AssertLabeledSpansAre("resolved2", "N((long)0)", RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestConflictBetweenClassAndInterface1(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class {|conflict:C|} { }
interface [|$$I|] { }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="C")

                result.AssertLabeledSpansAre("conflict", "C", RelatedLocationType.UnresolvableConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestConflictBetweenClassAndInterface2(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class [|$$C|] { }
interface {|conflict:I|} { }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="I")

                result.AssertLabeledSpansAre("conflict", "I", RelatedLocationType.UnresolvableConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestConflictBetweenClassAndNamespace1(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class {|conflict:$$C|} { }
namespace N { }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("conflict", "N", RelatedLocationType.UnresolvableConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestConflictBetweenClassAndNamespace1_FileScopedNamespace(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class {|conflict:$$C|} { }
namespace N;
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N")

                result.AssertLabeledSpansAre("conflict", "N", RelatedLocationType.UnresolvableConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestConflictBetweenClassAndNamespace2(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
class {|conflict:C|} { }
namespace [|$$N|] { }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="C")

                result.AssertLabeledSpansAre("conflict", "C", RelatedLocationType.UnresolvableConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1027506")>
        Public Sub TestNoConflictBetweenTwoNamespaces(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
namespace [|$$N1|][ { }
namespace N2 { }
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="N2")
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1729")>
        Public Sub TestNoConflictWithParametersOrLocalsOfDelegateType(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
class C
{
    void M1(Action [|callback$$|])
    {
        [|callback|]();
    }

    void M2(Func<bool> callback)
    {
        callback();
    }

    void M3()
    {
        Action callback = () => { };
        callback();
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="callback2")
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1729")>
        Public Sub TestConflictWithLocalsOfDelegateTypeWhenBindingChangesToNonDelegateLocal(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                <Workspace>
                    <Project Language="C#" CommonReferences="true">
                        <Document FilePath="Test.cs"><![CDATA[
using System;
class C
{
    void M()
    {
        int [|x$$|] = 7; // Rename x to a. "a()" will bind to the first definition of a.
        Action {|conflict:a|} = () => { };
        {|conflict:a|}();
    }
}
]]>
                        </Document>
                    </Project>
                </Workspace>, host:=host, renameTo:="a")

                result.AssertLabeledSpansAre("conflict", "a", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/446")>
        <CombinatorialData>
        Public Sub NoCrashOrConflictOnRenameWithNameOfInAttribute(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class C
{
    static void [|T|]$$(int x) { }

    [System.Obsolete(nameof(Test))]
    static void Test() { }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="Test")
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1195")>
        <CombinatorialData>
        Public Sub ConflictWhenNameOfReferenceDoesNotBindToAnyOriginalSymbols(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class C
{
    void Test()
    {
        int [|T$$|];
        var x = nameof({|conflict:Test|});
    }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="Test")

                result.AssertLabeledSpansAre("conflict", "Test", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1195")>
        <CombinatorialData>
        Public Sub NoConflictWhenNameOfReferenceDoesNotBindToSomeOriginalSymbols(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class Program
{
    void [|$$M|](int x) { }
    void M() { var x = nameof(M); }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="X")
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1195")>
        <CombinatorialData>
        Public Sub NoConflictWhenNameOfReferenceBindsToSymbolForFirstTime(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class Program
{
    void [|X$$|]() { }
    void M() { var x = nameof(T); }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="T")
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1195")>
        <CombinatorialData>
        Public Sub ConflictWhenNameOfReferenceChangesBindingFromMetadataToSource(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
using System;

class Program
{
    static void M()
    {
        var [|Consol$$|] = 7;
        var x = nameof({|conflict:Console|});
    }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="Console")

                result.AssertLabeledSpansAre("conflict", "Console", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1031")>
        <CombinatorialData>
        Public Sub InvalidNamesDoNotCauseCrash_IntroduceQualifiedName(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class {|conflict:C$$|} { }
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="C.D")

                result.AssertReplacementTextInvalid()
                result.AssertLabeledSpansAre("conflict", "C.D", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/1031")>
        <CombinatorialData>
        Public Sub InvalidNamesDoNotCauseCrash_AccidentallyPasteLotsOfCode(host As RenameTestHost)
            Dim renameTo = "class C { public void M() { for (int i = 0; i < 10; i++) { System.Console.Writeline(""This is a test""); } } }"

            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document>
class {|conflict:C$$|} { }
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:=renameTo)

                result.AssertReplacementTextInvalid()
                result.AssertLabeledSpansAre("conflict", renameTo, RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/2352")>
        <CombinatorialData>
        Public Sub DeclarationConflictInFileWithoutReferences_SameProject(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document FilePath="Test1.cs">
class Program
{
    internal void [|A$$|]() { }
    internal void {|conflict:B|}() { }
}
                            </Document>
                           <Document FilePath="Test2.cs">
class Program2
{
    void M()
    {
        Program p = null;
        p.{|conflict:A|}();
        p.{|conflict:B|}();
    }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="B")

                result.AssertLabeledSpansAre("conflict", "B", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/2352")>
        <CombinatorialData>
        Public Sub DeclarationConflictInFileWithoutReferences_DifferentProjects(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true" AssemblyName="CSAssembly1">
                           <Document FilePath="Test1.cs">
public class Program
{
    public void [|A$$|]() { }
    public void {|conflict:B|}() { }
}
                            </Document>
                       </Project>
                       <Project Language="C#" CommonReferences="true" AssemblyName="CSAssembly2">
                           <ProjectReference>CSAssembly1</ProjectReference>
                           <Document FilePath="Test2.cs">
class Program2
{
    void M()
    {
        Program p = null;
        p.{|conflict:A|}();
        p.{|conflict:B|}();
    }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="B")

                result.AssertLabeledSpansAre("conflict", "B", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/2352")>
        <WorkItem("https://github.com/dotnet/roslyn/issues/3303")>
        <CombinatorialData>
        Public Sub DeclarationConflictInFileWithoutReferences_PartialTypes(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                   <Workspace>
                       <Project Language="C#" CommonReferences="true">
                           <Document FilePath="Test1.cs">
partial class C
{
    private static void [|$$M|]()
    {
        {|conflict:M|}();
    }
}
                            </Document>
                           <Document FilePath="Test2.cs">
partial class C
{
    private static void {|conflict:Method|}()
    {
    }
}
                            </Document>
                       </Project>
                   </Workspace>, host:=host, renameTo:="Method")

                result.AssertLabeledSpansAre("conflict", "Method", RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1439")>
        Public Sub RenameInsideNameOf1(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    int field;

    static void Main(string[] args)
    {
        // Rename "local" to "field"
        int [|$$local|];

        nameof({|Conflict:field|}).ToString(); // Should also expand to Program.field
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="field")

                result.AssertLabeledSpansAre("Conflict", replacement:="nameof(Program.field).ToString();", type:=RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1439")>
        Public Sub RenameInsideNameOf2(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    int field;

    static void Main(string[] args)
    {
        // Rename "local" to "field"
        int [|$$local|];

        nameof({|Conflict:field|})?.ToString(); // Should also expand to Program.field
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="field")

                result.AssertLabeledSpansAre("Conflict", replacement:="nameof(Program.field)?.ToString();", type:=RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory, CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/1439")>
        Public Sub RenameInsideNameOf3(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class Program
{
    static int field;

    static void Main(string[] args)
    {
        // Rename "local" to "field"
        int [|$$local|];

        Program.nameof({|Conflict:field|}); // Should also expand to Program.field
    }

    static void nameof(string s) { }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="field")

                result.AssertLabeledSpansAre("Conflict", replacement:="Program.nameof(Program.field);", type:=RelatedLocationType.ResolvedNonReferenceConflict)
            End Using
        End Sub

        <Theory>
        <CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/7440")>
        Public Sub RenameTypeParameterInPartialClass(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
partial class C&lt;[|$$T|]&gt; {}
partial class C&lt;[|T|]&gt; {}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="T2")
            End Using
        End Sub

        <Theory>
        <CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/7440")>
        Public Sub RenameMethodToConflictWithTypeParameter(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
partial class C&lt;{|Conflict:T|}&gt; { void [|$$M|]() { } }
partial class C&lt;{|Conflict:T|}&gt; {}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="T")

                result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <Theory>
        <CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/10469")>
        Public Sub RenameTypeToCurrent(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
partial class {|current:$$C|} { }
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Current")

                result.AssertLabeledSpansAre("current", type:=RelatedLocationType.NoConflict)
            End Using
        End Sub

        <Theory>
        <CombinatorialData>
        <WorkItem("https://github.com/dotnet/roslyn/issues/16567")>
        Public Sub RenameMethodToFinalizeWithDestructorPresent(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    ~{|Conflict:C|}() { }
    void $$[|M|]() 
    { 
        int x = 7;
        int y = ~x;
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="Finalize")

                result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/5872")>
        <CombinatorialData>
        Public Sub CannotRenameToVar(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class $${|Conflict:X|} {
    {|Conflict:X|}() {
        var a = 2;
    }
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="var")

                result.AssertLabeledSpansAre("Conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/45677")>
        <CombinatorialData>
        Public Sub ConflictWhenRenamingPropertySetterLikeMethod(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    public int MyProperty { get; {|conflict:set|}; }

    private void {|conflict:$$_set_MyProperty|}(int value) => throw null;
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="set_MyProperty")

                result.AssertLabeledSpansAre("conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/45677")>
        <CombinatorialData>
        Public Sub ConflictWhenRenamingPropertyInitterLikeMethod(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    public int MyProperty { get; {|conflict:init|}; }

    private void {|conflict:$$_set_MyProperty|}(int value) => throw null;
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="set_MyProperty")

                result.AssertLabeledSpansAre("conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub

        <WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/45677")>
        <CombinatorialData>
        Public Sub ConflictWhenRenamingPropertyGetterLikeMethod(host As RenameTestHost)
            Using result = RenameEngineResult.Create(_outputHelper,
                    <Workspace>
                        <Project Language="C#" CommonReferences="true">
                            <Document>
class C
{
    public int MyProperty { {|conflict:get|}; set; }

    private int {|conflict:$$_get_MyProperty|}() => throw null;
}
                            </Document>
                        </Project>
                    </Workspace>, host:=host, renameTo:="get_MyProperty")

                result.AssertLabeledSpansAre("conflict", type:=RelatedLocationType.UnresolvedConflict)
            End Using
        End Sub
    End Class
End Namespace