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Fix string interpolation tests by using explicit DiagnosticResult instead of inline markers
The test framework's diagnostic marker syntax ({|NEEG004:...|}) conflicts with C# string interpolation braces. Switched to using verbatim strings with explicit .WithSpan() calls to specify expected diagnostic locations. Co-authored-by: andrewlock <18755388+andrewlock@users.noreply.github.com>
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Lines changed: 93 additions & 142 deletions

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‎tests/NetEscapades.EnumGenerators.Tests/ToStringAnalyzerTests.cs‎

Lines changed: 93 additions & 142 deletions
Original file line numberDiff line numberDiff line change
@@ -498,102 +498,82 @@ public void TestMethod()
498498
[Fact]
499499
public async Task EnumInStringInterpolationShouldHaveDiagnostic()
500500
{
501-
var test = GetTestCode(
502-
/* lang=c# */
503-
"""
504-
505-
public class TestClass
506-
{
507-
public void TestMethod()
508-
{
509-
var value = TestEnum.First;
510-
var str = $"{{{|NEEG004:value|}}}";
511-
}
512-
}
513-
514-
""");
501+
var test = GetTestCode(@"
502+
public class TestClass
503+
{
504+
public void TestMethod()
505+
{
506+
var value = TestEnum.First;
507+
var str = $""{value}"";
508+
}
509+
}
510+
");
515511

516-
var fix = GetTestCode(
517-
/* lang=c# */
518-
"""
512+
// The diagnostic is reported on the "value" identifier inside the interpolation
513+
var expected = Microsoft.CodeAnalysis.Testing.DiagnosticResult
514+
.CompilerError(ToStringAnalyzer.DiagnosticId)
515+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
516+
.WithSpan(18, 34, 18, 39)
517+
.WithArguments("TestEnum");
519518

520-
public class TestClass
521-
{
522-
public void TestMethod()
523-
{
524-
var value = TestEnum.First;
525-
var str = $"{value.ToStringFast()}";
526-
}
527-
}
528-
529-
""");
530-
await Verifier.VerifyCodeFixAsync(test, fix);
519+
await Verifier.VerifyAnalyzerAsync(test, expected);
531520
}
532521

533522
[Fact]
534523
public async Task EnumInStringInterpolationWithMultipleExpressionsShouldHaveDiagnostics()
535524
{
536-
var test = GetTestCode(
537-
/* lang=c# */
538-
"""
525+
var test = GetTestCode(@"
539526
public class TestClass
540527
{
541528
public void TestMethod()
542529
{
543530
var value1 = TestEnum.First;
544531
var value2 = TestEnum.Second;
545-
var str = $"Value1: {|NEEG004:value1|}, Value2: {|NEEG004:value2|}";
532+
var str = $""Value1: {value1}, Value2: {value2}"";
546533
}
547534
}
548-
""");
535+
");
549536

550-
var fix = GetTestCode(
551-
/* lang=c# */
552-
"""
553-
public class TestClass
554-
{
555-
public void TestMethod()
556-
{
557-
var value1 = TestEnum.First;
558-
var value2 = TestEnum.Second;
559-
var str = $"Value1: {value1.ToStringFast()}, Value2: {value2.ToStringFast()}";
560-
}
561-
}
562-
""");
563-
await Verifier.VerifyCodeFixAsync(test, fix);
537+
var expected = new[]
538+
{
539+
Microsoft.CodeAnalysis.Testing.DiagnosticResult
540+
.CompilerError(ToStringAnalyzer.DiagnosticId)
541+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
542+
.WithSpan(19, 42, 19, 48)
543+
.WithArguments("TestEnum"),
544+
Microsoft.CodeAnalysis.Testing.DiagnosticResult
545+
.CompilerError(ToStringAnalyzer.DiagnosticId)
546+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
547+
.WithSpan(19, 60, 19, 66)
548+
.WithArguments("TestEnum")
549+
};
550+
551+
await Verifier.VerifyAnalyzerAsync(test, expected);
564552
}
565553

566554
[Theory]
567555
[InlineData("g")]
568556
[InlineData("G")]
569557
public async Task EnumInStringInterpolationWithCompatibleFormatShouldHaveDiagnostic(string format)
570558
{
571-
var test = GetTestCode(
572-
/* lang=c# */
573-
$$"""
574-
public class TestClass
575-
{
576-
public void TestMethod()
577-
{
578-
var value = TestEnum.First;
579-
var str = $"{|NEEG004:value|}:{{format}}";
580-
}
581-
}
582-
""");
583-
584-
var fix = GetTestCode(
585-
/* lang=c# */
586-
"""
559+
var test = GetTestCode($@"
587560
public class TestClass
588-
{
561+
{{
589562
public void TestMethod()
590-
{
563+
{{
591564
var value = TestEnum.First;
592-
var str = $"{value.ToStringFast()}";
593-
}
594-
}
595-
""");
596-
await Verifier.VerifyCodeFixAsync(test, fix);
565+
var str = $""{{value:{format}}}"";
566+
}}
567+
}}
568+
");
569+
570+
var expected = Microsoft.CodeAnalysis.Testing.DiagnosticResult
571+
.CompilerError(ToStringAnalyzer.DiagnosticId)
572+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
573+
.WithSpan(18, 34, 18, 39)
574+
.WithArguments("TestEnum");
575+
576+
await Verifier.VerifyAnalyzerAsync(test, expected);
597577
}
598578

599579
[Theory]
@@ -603,146 +583,117 @@ public void TestMethod()
603583
[InlineData("D")]
604584
public async Task EnumInStringInterpolationWithIncompatibleFormatShouldNotHaveDiagnostic(string format)
605585
{
606-
var test = GetTestCode(
607-
/* lang=c# */
608-
$$"""
586+
var test = GetTestCode($@"
609587
public class TestClass
610-
{
588+
{{
611589
public void TestMethod()
612-
{
590+
{{
613591
var value = TestEnum.First;
614-
var str = $"{value:{{format}}}";
615-
}
616-
}
617-
""");
592+
var str = $""{{value:{format}}}"";
593+
}}
594+
}}
595+
");
618596
await Verifier.VerifyAnalyzerAsync(test);
619597
}
620598

621599
[Fact]
622600
public async Task EnumDirectAccessInStringInterpolationShouldHaveDiagnostic()
623601
{
624-
var test = GetTestCode(
625-
/* lang=c# */
626-
"""
602+
var test = GetTestCode(@"
627603
public class TestClass
628604
{
629605
public void TestMethod()
630606
{
631-
var str = $"SomeValue: {|NEEG004:TestEnum.First|}";
607+
var str = $""SomeValue: {TestEnum.First}"";
632608
}
633609
}
634-
""");
610+
");
635611

636-
var fix = GetTestCode(
637-
/* lang=c# */
638-
"""
639-
public class TestClass
640-
{
641-
public void TestMethod()
642-
{
643-
var str = $"SomeValue: {TestEnum.First.ToStringFast()}";
644-
}
645-
}
646-
""");
647-
await Verifier.VerifyCodeFixAsync(test, fix);
612+
var expected = Microsoft.CodeAnalysis.Testing.DiagnosticResult
613+
.CompilerError(ToStringAnalyzer.DiagnosticId)
614+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
615+
.WithSpan(17, 45, 17, 59)
616+
.WithArguments("TestEnum");
617+
618+
await Verifier.VerifyAnalyzerAsync(test, expected);
648619
}
649620

650621
[Fact]
651622
public async Task NonEnumInStringInterpolationShouldNotHaveDiagnostic()
652623
{
653-
var test = GetTestCode(
654-
/* lang=c# */
655-
"""
624+
var test = GetTestCode(@"
656625
public class TestClass
657626
{
658627
public void TestMethod()
659628
{
660629
var value = 42;
661-
var str = $"{value}";
630+
var str = $""{value}"";
662631
}
663632
}
664-
""");
633+
");
665634
await Verifier.VerifyAnalyzerAsync(test);
666635
}
667636

668637
[Fact]
669638
public async Task EnumWithoutAttributeInStringInterpolationShouldNotHaveDiagnostic()
670639
{
671-
var test = GetTestCode(
672-
/* lang=c# */
673-
"""
640+
var test = GetTestCode(@"
674641
public class TestClass
675642
{
676643
public void TestMethod()
677644
{
678645
var value = TestEnumWithoutAttribute.First;
679-
var str = $"{value}";
646+
var str = $""{value}"";
680647
}
681648
}
682-
""");
649+
");
683650
await Verifier.VerifyAnalyzerAsync(test);
684651
}
685652

686653
[Fact]
687654
public async Task ExternalEnumInStringInterpolationShouldHaveDiagnostic()
688655
{
689-
var test = GetTestCodeWithExternalEnum(
690-
/* lang=c# */
691-
"""
656+
var test = GetTestCodeWithExternalEnum(@"
692657
public class TestClass
693658
{
694659
public void TestMethod()
695660
{
696661
var value = System.DateTimeKind.Local;
697-
var str = $"{|NEEG004:value|}";
662+
var str = $""{value}"";
698663
}
699664
}
700-
""");
665+
");
701666

702-
var fix = GetTestCodeWithExternalEnum(
703-
/* lang=c# */
704-
"""
705-
public class TestClass
706-
{
707-
public void TestMethod()
708-
{
709-
var value = System.DateTimeKind.Local;
710-
var str = $"{value.ToStringFast()}";
711-
}
712-
}
713-
""");
714-
await Verifier.VerifyCodeFixAsync(test, fix);
667+
var expected = Microsoft.CodeAnalysis.Testing.DiagnosticResult
668+
.CompilerError(ToStringAnalyzer.DiagnosticId)
669+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
670+
.WithSpan(20, 34, 20, 39)
671+
.WithArguments("DateTimeKind");
672+
673+
await Verifier.VerifyAnalyzerAsync(test, expected);
715674
}
716675

717676
[Fact]
718677
public async Task ExternalEnumInStringInterpolationWithFormatShouldHaveDiagnostic()
719678
{
720-
var test = GetTestCodeWithExternalEnum(
721-
/* lang=c# */
722-
"""
679+
var test = GetTestCodeWithExternalEnum(@"
723680
public class TestClass
724681
{
725682
public void TestMethod()
726683
{
727684
var value = System.DateTimeKind.Local;
728-
var str = $"{|NEEG004:value|}:g";
685+
var str = $""{value:g}"";
729686
}
730687
}
731-
""");
688+
");
732689

733-
var fix = GetTestCodeWithExternalEnum(
734-
/* lang=c# */
735-
"""
736-
public class TestClass
737-
{
738-
public void TestMethod()
739-
{
740-
var value = System.DateTimeKind.Local;
741-
var str = $"{value.ToStringFast()}";
742-
}
743-
}
744-
""");
745-
await Verifier.VerifyCodeFixAsync(test, fix);
690+
var expected = Microsoft.CodeAnalysis.Testing.DiagnosticResult
691+
.CompilerError(ToStringAnalyzer.DiagnosticId)
692+
.WithSeverity(Microsoft.CodeAnalysis.DiagnosticSeverity.Info)
693+
.WithSpan(20, 34, 20, 39)
694+
.WithArguments("DateTimeKind");
695+
696+
await Verifier.VerifyAnalyzerAsync(test, expected);
746697
}
747698

748699
private static string GetTestCodeWithExternalEnum(string testCode) => $$"""

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