src/EditorFeatures/CSharpTest/StringCopyPaste/PasteKnownSourceIntoMultiLineRawInterpolatedStringTests.cs - main - githubmirror/roslyn

src/EditorFeatures/CSharpTest/StringCopyPaste/PasteKnownSourceIntoMultiLineRawInterpolatedStringTests.cs
2 846 строк54 KB
Cyrus Najmabadi
Cleanup test methods
24 июл 2025, 11:15
24 июл 2025, 11:159b3e554
// 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.

using Roslyn.Test.Utilities;

namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.StringCopyPaste;

public sealed class PasteKnownSourceIntoMultiLineRawInterpolatedStringTests : StringCopyPasteCommandHandlerKnownSourceTests
{
    #region Normal Copy/Paste tests

    // Tests where we actually set up a document to copy code from.

    [WpfFact]
    public void TestPasteSimpleNormalLiteralContent()
        => TestCopyPaste(
"""var v = "{|Copy:goo|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteOpenBraceNormalLiteralContent()
        => TestCopyPaste(
"""var v = "{|Copy:{|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $$"""
    {[||]
    """;
"""",
""""
var dest =
    $"""
    {[||]
    """;
"""");

    [WpfFact]
    public void TestPasteOpenCloseBraceNormalLiteralContent()
        => TestCopyPaste(
"""var v = "{|Copy:{}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $$"""
    {}[||]
    """;
"""",
""""
var dest =
    $"""
    {}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteLooksLikeInterpolationNormalLiteralContent()
        => TestCopyPaste(
"""var v = "{|Copy:{0}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $$"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleSubstringNormalLiteralContent()
        => TestCopyPaste(
"""var v = "g{|Copy:o|}o";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    o[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPastePartiallySelectedEscapeNormalLiteralContent()
        => TestCopyPaste(
"""var v = "\{|Copy:n|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    n[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteFullySelectedEscapeNormalLiteralContent()
        => TestCopyPaste(
@"var v = ""{|Copy:\n|}"";",
""""
var dest =
    $"""
    [||]
    """;
"""",
"var dest =\r\n    $\"\"\"\r\n    \n    [||]\r\n    \"\"\";",
""""
var dest =
    $"""
    \n[||]
    """;
"""");

    [WpfFact]
    public void TestPastePartiallySelectedQuoteNormalLiteralContent()
        => TestCopyPaste(
"""var v = "\{|Copy:"|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    "[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteFullySelectedQuoteNormalLiteralContent()
        => TestCopyPaste(
"""var v = "{|Copy:\"|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    "[||]
    """;
"""",
""""
var dest =
    $"""
    \"[||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleVerbatimLiteralContent()
        => TestCopyPaste(
"""var v = @"{|Copy:goo|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleSubstringVerbatimLiteralContent()
        => TestCopyPaste(
"""var v = @"g{|Copy:o|}o";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    o[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteSelectedVerbatimNewLineLiteralContent()
        => TestCopyPaste(
"""
var v = @"{|Copy:
|}";
""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    
    [||]
    """;
"""",
""""
var dest =
    $"""
    
[||]
    """;
"""");

    [WpfFact]
    public void TestPasteFullySelectedEscapeVerbatimLiteralContent()
        => TestCopyPaste(
"""var v = @"{|Copy:""|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    "[||]
    """;
"""",
""""
var dest =
    $"""
    ""[||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleRawSingleLineLiteralContent()
        => TestCopyPaste(
""""var v = """{|Copy:goo|}""";"""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteQuotesRawSingleLineLiteralContent()
        => TestCopyPaste(
""""var v = """{|Copy: "" |}""";"""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
     "" [||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleRawMultiLineLiteralContent1()
        => TestCopyPaste(
""""
var v = """
    {|Copy:goo|}
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleRawMultiLineLiteralContent2()
        => TestCopyPaste(
""""
var v = """
    {|Copy:goo
    bar|}
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo
    bar[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteSimpleRawMultiLineLiteralContent3()
        => TestCopyPaste(
""""
var v = """
{|Copy:    goo
    bar|}
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    goo
    bar[||]
    """;
"""",
""""
var dest =
    $"""
        goo
    bar[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationWithFormatClauseFromInterpolatedStringLiteralContent1()
        => TestCopyPaste(
"""var v = $"{|Copy:{0:X}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    {0:X}[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationWithFormatClauseFromInterpolatedStringLiteralContent2()
        => TestCopyPaste(
"""var v = $"{|Copy:{0:\"X\"}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    {0:"X"}[||]
    """;
"""",
""""
var dest =
    $"""
    {0:\"X\"}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationWithFormatClauseFromVerbatimInterpolatedStringLiteralContent1()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0:X}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    {0:X}[||]
    """;
"""",
""""
var dest =
    $"""
    [||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationWithFormatClauseFromVerbatimInterpolatedStringLiteralContent2()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0:""X""}|}";""",
""""
var dest =
    $"""
    [||]
    """;
"""",
""""
var dest =
    $"""
    {0:"X"}[||]
    """;
"""",
""""
var dest =
    $"""
    {0:""X""}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection1()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:|}

    """;
"""",
""""
var dest =
    $"""
    {0}[||]

    """;
"""",
""""
var dest =
    $"""{0}[||]

    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection2()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:
|}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection3()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:
  |}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection4()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:
    |}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection5()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:

|}    """;
"""",
""""
var dest =
    $"""
    {0}
[||]    """;
"""",
""""
var dest =
    $"""{0}[||]    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection6()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:

  |}  """;
"""",
""""
var dest =
    $"""
    {0}
  [||]  """;
"""",
""""
var dest =
    $"""{0}[||]  """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection7()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""[||]{|Selection:

    |}""";
"""",
""""
var dest =
    $"""
    {0}
    [||]""";
"""",
""""
var dest =
    $"""{0}[||]""";
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection8()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:|}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""
{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection9()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:  |}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""
{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection10()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:    |}
    """;
"""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $"""
{0}[||]
    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection11()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:
|}    """;
"""",
""""
var dest =
    $"""
    {0}
[||]    """;
"""",
""""
var dest =
    $"""
{0}[||]    """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection12()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:
  |}  """;
"""",
""""
var dest =
    $"""
    {0}
  [||]  """;
"""",
""""
var dest =
    $"""
{0}[||]  """;
"""");

    [WpfFact]
    public void TestPasteInterpolationIntoSelection13()
        => TestCopyPaste(
"""var v = $@"{|Copy:{0}|}";""",
""""
var dest =
    $"""
[||]{|Selection:
    |}""";
"""",
""""
var dest =
    $"""
    {0}
    [||]""";
"""",
""""
var dest =
    $"""
{0}[||]""";
"""");

    #endregion

    #region Known Source tests 'PasteUnknownSourceIntoSingleLineInterpolatedRawStringTests'

    // Tests where we place things directly on the clipboard (avoiding the need to do the actual copy).
    // This allows a port of the tests in PasteUnknownSourceIntoSingleLineInterpolatedRawStringTests.cs

    [WpfFact]
    public void TestPasteBracesWithExistingInterpolation1()
        => TestPasteKnownSource(
pasteText: """{{{""",
""""
var dest =
    $"""
    [||]{0}
    """;
"""",
""""
var dest =
    $$$$"""
    {{{[||]{{{{0}}}}
    """;
"""",
""""
var dest =
    $"""
    {{{[||]{0}
    """;
"""");

    [WpfFact]
    public void TestPasteBracesWithExistingInterpolation2()
        => TestPasteKnownSource(
pasteText: """{{{""",
""""
var dest =
    $"""
    {0}[||]
    """;
"""",
""""
var dest =
    $$$$"""
    {{{{0}}}}{{{[||]
    """;
"""",
""""
var dest =
    $"""
    {0}{{{[||]
    """;
"""");

    [WpfFact]
    public void TestPasteBracesWithExistingInterpolation3()
        => TestPasteKnownSource(
pasteText: """{{{""",
""""
var dest =
    $"""
    {0}[||]{1}
    """;
"""",
""""
var dest =
    $$$$"""
    {{{{0}}}}{{{[||]{{{{1}}}}
    """;
"""",
""""
var dest =
    $"""
    {0}{{{[||]{1}
    """;
"""");

    [WpfFact]
    public void TestPasteBracesWithExistingInterpolation4()
        => TestPasteKnownSource(
pasteText: """{{{""",
""""
var dest =
    $"""
    {0}[||]{|Selection:{1}|}{2}
    """;
"""",
""""
var dest =
    $$$$"""
    {{{{0}}}}{{{[||]{{{{2}}}}
    """;
"""",
""""
var dest =
    $"""
    {0}{{{[||]{2}
    """;
"""");

    [WpfFact]
    public void TestNewLineIntoSingleLineRawString1_A()
        => TestPasteKnownSource(
            pasteText: "\n",
            """"
            var x = $"""
                [||]
                """
            """",
            "var x = $\"\"\"\r\n    \n    [||]\r\n    \"\"\"",
            afterUndo:
            "var x = $\"\"\"\r\n    \n[||]\r\n    \"\"\"");

    [WpfFact]
    public void TestNewLineIntoSingleLineRawString2_A()
        => TestPasteKnownSource(
            pasteText: """


            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                
                [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                
            [||]
                """
            """");

    [WpfFact]
    public void TestSpacesIntoSingleLineRawString1_A()
        => TestPasteKnownSource(
            pasteText: """    """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestSpacesIntoSingleLineRawString2()
        => TestPasteKnownSource(
            pasteText: """
                

            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    
                [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                    
            [||]
                """
            """");

    [WpfFact]
    public void TestSingleQuoteIntoSingleLineRawString_A()
        => TestPasteKnownSource(
            pasteText: """'""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                '[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestDoubleQuoteIntoSingleLineRawString_A()
        => TestPasteKnownSource(
            pasteText: """
            "
            """,
            """"
            var x = $"""[||] """
            """",
            """"
            var x = $"""
                "[||] 
                """
            """",
            afterUndo:
            """""
            var x = $""""[||] """
            """"");

    [WpfFact]
    public void TestTripleQuoteIntoSingleLineRawString1_A()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""[||] """
            """",
            """""
            var x = $""""
                """[||] 
                """"
            """"",
            afterUndo:
            """""""
            var x = $""""""[||] """
            """"""");

    [WpfFact]
    public void TestTripleQuoteIntoSingleLineRawString3()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""
                "[||]
                """
            """",
            """"""
            var x = $"""""
                """"[||]
                """""
            """""",
            afterUndo:
            """""
            var x = $"""
                """"[||]
                """
            """"");

    [WpfFact]
    public void TestTripleQuoteIntoSingleLineRawString4()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""
                "[||]"
                """
            """",
            """""""
            var x = $""""""
                """"[||]"
                """"""
            """"""",
            afterUndo:
            """""
            var x = $"""
                """"[||]"
                """
            """"");

    [WpfFact]
    public void TestTripleQuoteIntoSingleLineRawString5()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""
                [||]"
                """
            """",
            """"""
            var x = $"""""
                """[||]"
                """""
            """""",
            afterUndo:
            """"
            var x = $"""
                """[||]"
                """
            """");

    [WpfFact]
    public void TestQuadrupleQuoteIntoSingleLineRawString()
        => TestPasteKnownSource(
            pasteText: """""
            """"
            """"",
            """"
            var x = $"""
                [||]
                """
            """",
            """"""
            var x = $"""""
                """"[||]
                """""
            """""",
            afterUndo:
            """""
            var x = $"""
                """"[||]
                """
            """"");

    [WpfFact]
    public void TestOpenCurlyIntoSingleLineRawString_A()
        => TestPasteKnownSource(
            pasteText: """{""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$"""
                {[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {[||]
                """
            """");

    [WpfFact]
    public void TestOpenQuoteAndTripleOpenBraceIntoSingleLineRawString1()
        => TestPasteKnownSource(
            pasteText: """
            "{{{
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$$$"""
                "{{{[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                "{{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenQuoteAndTripleOpenBraceIntoSingleLineRawString1()
        => TestPasteKnownSource(
            pasteText: """"
            """{{{
            """",
            """"
            var x = $"""
                [||]
                """
            """",
            """""
            var x = $$$$""""
                """{{{[||]
                """"
            """"",
            afterUndo:
            """"
            var x = $"""
                """{{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenQuoteAndTripleOpenBraceIntoSingleLineRawString2()
        => TestPasteKnownSource(
            pasteText: """" """{{{"""",
            """"
            var x = $"""
                [||]
                """
            """",
            """""
            var x = $$$$""""
                 """{{{[||]
                """"
            """"",
            afterUndo:
            """"
            var x = $"""
                 """{{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoSingleLineRawString1_A()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$$$"""
                {{{[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoSingleLineRawString3()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $"""
                "[||]
                """
            """",
            """"
            var x = $$$$"""
                "{{{[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                "{{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoSingleLineRawString4()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $"""
                "[||]"
                """
            """",
            """"
            var x = $$$$"""
                "{{{[||]"
                """
            """",
            afterUndo:
            """"
            var x = $"""
                "{{{[||]"
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoSingleLineRawString5()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $"""
                [||]"
                """
            """",
            """"
            var x = $$$$"""
                {{{[||]"
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {{{[||]"
                """
            """");

    [WpfFact]
    public void TestInterpolationIntoSingleLineRawString1()
        => TestPasteKnownSource(
            pasteText: """{0}""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$"""
                {0}[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {0}[||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoSingleLineRawString1()
        => TestPasteKnownSource(
            pasteText: """{}""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$"""
                {}[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {}[||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoSingleLineRawString2()
        => TestPasteKnownSource(
            pasteText: """{}""",
            """"
            var x = $$"""
                [||]
                """
            """",
            """"
            var x = $$"""
                {}[||]
                """
            """",
            afterUndo:
            """"
            var x = $$"""
                [||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoSingleLineRawString3()
        => TestPasteKnownSource(
            pasteText: """{{}""",
            """"
            var x = $$"""
                [||]
                """
            """",
            """"
            var x = $$$"""
                {{}[||]
                """
            """",
            afterUndo:
            """"
            var x = $$"""
                {{}[||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoSingleLineRawString4()
        => TestPasteKnownSource(
            pasteText: """{}}""",
            """"
            var x = $$"""
                [||]
                """
            """",
            """"
            var x = $$$"""
                {}}[||]
                """
            """",
            afterUndo:
            """"
            var x = $$"""
                {}}[||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoSingleLineRawString5()
        => TestPasteKnownSource(
            pasteText: """{{}}""",
            """"
            var x = $$"""
                [||]
                """
            """",
            """"
            var x = $$$"""
                {{}}[||]
                """
            """",
            afterUndo:
            """"
            var x = $$"""
                {{}}[||]
                """
            """");

    [WpfFact]
    public void TestComplexStringIntoSingleLineRawString()
        => TestPasteKnownSource(
            pasteText: """  ""  """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                  ""  [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawString_A()
        => TestPasteKnownSource(
            pasteText: """abc""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine1_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine4()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                goo[||]
                """
            """",
            """"
            var x = $"""
                gooabc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine5()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                goo[||]bar
                """
            """",
            """"
            var x = $"""
                gooabc
                def[||]bar
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def[||]bar
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine6()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def

            """,
            """"
            var x = $"""
                goo[||]bar
                """
            """",
            """"
            var x = $"""
                gooabc
                def
                [||]bar
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def
            [||]bar
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine7_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
                def
            ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                    def
                ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
                def
            ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine7_B()
        => TestPasteKnownSource(
            pasteText: """
            abc
                def
            ghi
            """,
            """"
            var x = $"""
                      [||]
                      """
            """",
            """"
            var x = $"""
                      abc
                          def
                      ghi[||]
                      """
            """",
            afterUndo:
            """"
            var x = $"""
                      abc
                def
            ghi[||]
                      """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine8_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine9_A()
        => TestPasteKnownSource(
            pasteText: """
                abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                    abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine10_A()
        => TestPasteKnownSource(
            pasteText: """
                    abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                        abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                        abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine11_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                [||]{|Selection:    |}
                """
            """",
            """"
            var x = $"""
                abc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine12_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def

            """,
            """"
            var x = $"""
                [||]{|Selection:    |}
                """
            """",
            """"
            var x = $"""
                abc
                def
                [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
            def
            [||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringSingleLine13_A()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                [||]{|Selection:    |}  
                """
            """",
            """"
            var x = $"""
                abc
                def[||]  
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
            def[||]  
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoSingleLineRawStringHeader1_A()
        => TestPasteKnownSource(
            pasteText: """
            "bar
            """,
            """"
            var x = $"""
                [||]goo
                """
            """",
            """"
            var x = $"""
                "bar[||]goo
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]goo
                """
            """");

    [WpfFact]
    public void TestQuotesIntoHeader1()
        => TestPasteKnownSource(
            pasteText: """
            ""
            """,
            """"
            var x = $"""
                [||]{|Selection:    |}
                """
            """",
            """"
            var x = $"""
                ""[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                    [||]
                """
            """");

    [WpfFact]
    public void TestQuotesIntoHeader2()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""
                [||]{|Selection:    |}
                """
            """",
            """""
            var x = $""""
                """[||]
                """"
            """"",
            afterUndo:
            """"
            var x = $"""
                """[||]
                """
            """");

    #endregion

    #region Known Source tests 'PasteUnknownSourceIntoMultiLineInterpolatedRawStringTests'

    [WpfFact]
    public void TestNewLineIntoMultiLineRawString1()
        => TestPasteKnownSource(
            pasteText: "\n",
            """"
            var x = $"""
                [||]
                """
            """",
            "var x = $\"\"\"\r\n    \n    [||]\r\n    \"\"\"",
            afterUndo:
            "var x = $\"\"\"\r\n    \n[||]\r\n    \"\"\"");

    [WpfFact]
    public void TestNewLineIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """


            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                
                [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                
            [||]
                """
            """");

    [WpfFact]
    public void TestSpacesIntoMultiLineRawString1()
        => TestPasteKnownSource(
            pasteText: """    """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestSpacesIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """
                

            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    
                [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                    
            [||]
                """
            """");

    [WpfFact]
    public void TestSingleQuoteIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """'""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                '[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestDoubleQuoteIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """
            "
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                "[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestTripleQuoteIntoMultiLineRawString1()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""
                [||]
                """
            """",
            """""
            var x = $""""
                """[||]
                """"
            """"",
            afterUndo:
            """"
            var x = $"""
                """[||]
                """
            """");

    [WpfFact]
    public void TestTripleQuoteIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""  
                [||]
                """  
            """",
            """""
            var x = $""""  
                """[||]
                """"  
            """"",
            afterUndo:
            """"
            var x = $"""  
                """[||]
                """  
            """");

    [WpfFact]
    public void TestTripleQuoteIntoMultiLineRawString3()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""  
                "[||]
                """  
            """",
            """"""
            var x = $"""""  
                """"[||]
                """""  
            """""",
            afterUndo:
            """""
            var x = $"""  
                """"[||]
                """  
            """"");

    [WpfFact]
    public void TestTripleQuoteIntoMultiLineRawString4()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""  
                "[||]"  
                """  
            """",
            """""""
            var x = $""""""  
                """"[||]"  
                """"""  
            """"""",
            afterUndo:
            """""
            var x = $"""  
                """"[||]"  
                """  
            """"");

    [WpfFact]
    public void TestTripleQuoteIntoMultiLineRawString5()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""  
                [||]"
                """  
            """",
            """"""
            var x = $"""""  
                """[||]"
                """""  
            """""",
            afterUndo:
            """"
            var x = $"""  
                """[||]"
                """  
            """");

    [WpfFact]
    public void TestQuadrupleQuoteIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """""
            """"
            """"",
            """"
            var x = $"""
                [||]
                """
            """",
            """"""
            var x = $"""""
                """"[||]
                """""
            """""",
            afterUndo:
            """""
            var x = $"""
                """"[||]
                """
            """"");

    [WpfFact]
    public void TestOpenBraceIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """{""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$"""
                {[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$$$"""
                {{{[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {{{[||]
                """
            """");

    [WpfFact]
    public void TestTripleOpenBraceIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """{{{""",
            """"
            var x = $$"""
                [||]
                """
            """",
            """"
            var x = $$$$"""
                {{{[||]
                """
            """",
            afterUndo:
            """"
            var x = $$"""
                {{{[||]
                """
            """");

    [WpfFact]
    public void TestOpenBraceIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """{""",
            """"
            var x = $$$"""  
                {[||]{
                """  
            """",
            """"
            var x = $$$$"""  
                {{[||]{
                """  
            """",
            afterUndo:
            """"
            var x = $$$"""  
                {{[||]{
                """  
            """");

    [WpfFact]
    public void TestInterpolationIntoMultiLineRawString3()
        => TestPasteKnownSource(
            pasteText: """{0}""",
            """"
            var x = $"""  
                [||]
                """  
            """",
            """"
            var x = $$"""  
                {0}[||]
                """  
            """",
            afterUndo:
            """"
            var x = $"""  
                {0}[||]
                """  
            """");

    [WpfFact]
    public void TestOpenCloseIntoMultiLineRawString4()
        => TestPasteKnownSource(
            pasteText: """{}""",
            """"
            var x = $"""  
                [||]  
                """  
            """",
            """"
            var x = $$"""  
                {}[||]  
                """  
            """",
            afterUndo:
            """"
            var x = $"""  
                {}[||]  
                """  
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoMultiLineRawString5()
        => TestPasteKnownSource(
            pasteText: """{{}""",
            """"
            var x = $$"""  
                [||]
                """  
            """",
            """"
            var x = $$$"""  
                {{}[||]
                """  
            """",
            afterUndo:
            """"
            var x = $$"""  
                {{}[||]
                """  
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """{}}""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$$"""
                {}}[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {}}[||]
                """
            """");

    [WpfFact]
    public void TestOpenCloseBraceIntoMultiLineRawString2()
        => TestPasteKnownSource(
            pasteText: """{{}}""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $$$"""
                {{}}[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                {{}}[||]
                """
            """");

    [WpfFact]
    public void TestTripleQuoteTripleOpenBraceIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """"
            """{{{
            """",
            """"
            var x = $"""
                [||]
                """
            """",
            """""
            var x = $$$$""""
                """{{{[||]
                """"
            """"",
            afterUndo:
            """"
            var x = $"""
                """{{{[||]
                """
            """");

    [WpfFact]
    public void TestComplexStringIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """  ""  """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                  ""  [||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawString()
        => TestPasteKnownSource(
            pasteText: """abc""",
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                [||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine1()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine2()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
            [||]
                """
            """",
            """"
            var x = $"""
                abc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
            abc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine3()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""[||]

                """
            """",
            """"
            var x = $"""
                abc
                def[||]

                """
            """",
            afterUndo:
            """"
            var x = $"""abc
            def[||]

                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine4()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                goo[||]
                """
            """",
            """"
            var x = $"""
                gooabc
                def[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine5()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""
                goo[||]bar
                """
            """",
            """"
            var x = $"""
                gooabc
                def[||]bar
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def[||]bar
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine6()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def

            """,
            """"
            var x = $"""
                goo[||]bar
                """
            """",
            """"
            var x = $"""
                gooabc
                def
                [||]bar
                """
            """",
            afterUndo:
            """"
            var x = $"""
                gooabc
            def
            [||]bar
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine7()
        => TestPasteKnownSource(
            pasteText: """
            abc
                def
            ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                    def
                ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
                def
            ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine8()
        => TestPasteKnownSource(
            pasteText: """
            abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine9()
        => TestPasteKnownSource(
            pasteText: """
                abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                    abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                    abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine10()
        => TestPasteKnownSource(
            pasteText: """
                    abc
                def
                ghi
            """,
            """"
            var x = $"""
                [||]
                """
            """",
            """"
            var x = $"""
                        abc
                    def
                    ghi[||]
                """
            """",
            afterUndo:
            """"
            var x = $"""
                        abc
                def
                ghi[||]
                """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine11()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""[||]{|Selection:

                |}"""
            """",
            """"
            var x = $"""
                abc
                def
                [||]"""
            """",
            afterUndo:
            """"
            var x = $"""abc
            def[||]"""
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine12()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def

            """,
            """"
            var x = $"""[||]{|Selection:

                |}"""
            """",
            """"
            var x = $"""
                abc
                def
                
                [||]"""
            """",
            afterUndo:
            """"
            var x = $"""abc
            def
            [||]"""
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringMultiLine13()
        => TestPasteKnownSource(
            pasteText: """
            abc
            def
            """,
            """"
            var x = $"""[||]{|Selection:

             |}   """
            """",
            """"
            var x = $"""
                abc
                def
             [||]   """
            """",
            afterUndo:
            """"
            var x = $"""abc
            def[||]   """
            """");

    [WpfFact]
    public void TestNormalTextIntoMultiLineRawStringHeader1()
        => TestPasteKnownSource(
            pasteText: """bar""",
            """"
            var x = $"""[||]
                goo
                """
            """",
            """"
            var x = $"""
                bar[||]
                goo
                """
            """",
            afterUndo:
            """"
            var x = $"""bar[||]
                goo
                """
            """");

    [WpfFact]
    public void TestQuotesIntoHeader1_A()
        => TestPasteKnownSource(
            pasteText: """
            ""
            """,
            """"
            var x = $"""[||]{|Selection:

                |}"""
            """",
            """"
            var x = $"""
                ""
                [||]"""
            """",
            afterUndo:
            """"""
            var x = $"""""[||]"""
            """""");

    [WpfFact]
    public void TestQuotesIntoHeader2_B()
        => TestPasteKnownSource(
            pasteText: """"
            """
            """",
            """"
            var x = $"""[||]{|Selection:

                |}"""
            """",
            """""
            var x = $""""
                """
                [||]""""
            """"",
            afterUndo:
            """""""
            var x = $""""""[||]"""
            """"""");

    #endregion
}