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PDBUsingTests.cs
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PDBUsingTests.cs
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// 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.
#nullable disable
using System.Collections.Immutable;
using System.IO;
using System.Linq;
using System.Reflection.Metadata;
using System.Reflection.Metadata.Ecma335;
using System.Reflection.PortableExecutable;
using System.Text;
using Microsoft.CodeAnalysis.CSharp.Test.Utilities;
using Microsoft.CodeAnalysis.Emit;
using Microsoft.CodeAnalysis.Test.Utilities;
using Microsoft.Metadata.Tools;
using Roslyn.Test.MetadataUtilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.CSharp.UnitTests.PDB
{
public class PDBUsingTests : CSharpPDBTestBase
{
#region Helpers
private static CSharpCompilation CreateDummyCompilation(string assemblyName)
{
return CreateCompilation(
"public class C { }",
assemblyName: assemblyName,
options: TestOptions.DebugDll);
}
#endregion
[Fact]
public void TestUsings()
{
var text = @"
using System;
class A { void M() { } }
namespace X
{
using System.IO;
class B { void M() { } }
namespace Y
{
using System.Threading;
class C { void M() { } }
}
}
";
CompileAndVerify(text, options: TestOptions.DebugDll).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<namespace name=""System"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<namespace name=""System.IO"" />
<namespace name=""System"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<namespace name=""System.Threading"" />
<namespace name=""System.IO"" />
<namespace name=""System"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestNamespaceAliases()
{
var text = @"
using P = System;
class A { void M() { } }
namespace X
{
using Q = System.IO;
class B { void M() { } }
namespace Y
{
using R = System.Threading;
class C { void M() { } }
}
}
";
CompileAndVerify(text, options: TestOptions.DebugDll).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System"" kind=""namespace"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""Q"" target=""System.IO"" kind=""namespace"" />
<alias name=""P"" target=""System"" kind=""namespace"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""R"" target=""System.Threading"" kind=""namespace"" />
<alias name=""Q"" target=""System.IO"" kind=""namespace"" />
<alias name=""P"" target=""System"" kind=""namespace"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestTypeAliases1()
{
var text = @"
using P = System.String;
class A { void M() { } }
namespace X
{
using Q = System.Int32;
class B { void M() { } }
namespace Y
{
using R = System.Char;
class C { void M() { } }
}
}
";
CompileAndVerify(text, options: TestOptions.DebugDll).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""Q"" target=""System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""R"" target=""System.Char, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""Q"" target=""System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact]
public void TestTypeAliases1_B()
{
var text = @"
using P = string;
class A { void M() { } }
namespace X
{
using Q = int;
class B { void M() { } }
namespace Y
{
using R = char;
class C { void M() { } }
}
}
";
CompileAndVerify(text, options: TestOptions.DebugDll, targetFramework: TargetFramework.NetFramework).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""Q"" target=""System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""R"" target=""System.Char, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""Q"" target=""System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestTypeAliases2()
{
var text = @"
using P = System.Collections.Generic.List<int>;
class A { void M() { } }
namespace X
{
using Q = System.Collections.Generic.List<System.Collections.Generic.List<char>>;
class B { void M() { } }
namespace Y
{
using P = System.Char; //hides previous P
class C { void M() { } }
}
}
";
CompileAndVerify(text, options: TestOptions.DebugDll).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""Q"" target=""System.Collections.Generic.List`1[[System.Collections.Generic.List`1[[System.Char, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System.Char, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""Q"" target=""System.Collections.Generic.List`1[[System.Collections.Generic.List`1[[System.Char, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact]
public void TestTypeAliases3()
{
var text = @"
using P = (int a, string b);
class A { void M() { } }
namespace X
{
using Q = int[];
class B { void M() { } }
namespace Y
{
using R = dynamic;
class C { void M() { } }
namespace X
{
using unsafe S = int*;
class D { void M() { } }
}
}
}
";
CompileAndVerify(text, options: TestOptions.UnsafeDebugDll, targetFramework: TargetFramework.NetFramework).VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""P"" target=""System.ValueTuple`2[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"" kind=""type"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""Q"" target=""System.Int32[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.ValueTuple`2[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"" kind=""type"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""R"" target=""System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""Q"" target=""System.Int32[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.ValueTuple`2[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"" kind=""type"" />
</scope>
</method>
<method containingType=""X.Y.X.D"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""22"" startColumn=""32"" endLine=""22"" endColumn=""33"" document=""1"" />
<entry offset=""0x1"" startLine=""22"" startColumn=""34"" endLine=""22"" endColumn=""35"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<alias name=""S"" target=""System.Int32*, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""R"" target=""System.Object, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""Q"" target=""System.Int32[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"" kind=""type"" />
<alias name=""P"" target=""System.ValueTuple`2[[System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]], System.ValueTuple, Version=4.0.1.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"" kind=""type"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact]
public void TestExternAliases1()
{
CSharpCompilation dummyCompilation1 = CreateDummyCompilation("a");
CSharpCompilation dummyCompilation2 = CreateDummyCompilation("b");
CSharpCompilation dummyCompilation3 = CreateDummyCompilation("c");
var text = @"
extern alias P;
class A { void M() { } }
namespace X
{
extern alias Q;
class B { void M() { } }
namespace Y
{
extern alias R;
class C { void M() { } }
}
}
";
var compilation = CreateCompilation(text,
assemblyName: GetUniqueName(),
parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(),
options: TestOptions.DebugDll,
references: new[]
{
new CSharpCompilationReference(dummyCompilation1, ImmutableArray.Create("P")) ,
new CSharpCompilationReference(dummyCompilation2, ImmutableArray.Create("Q")),
new CSharpCompilationReference(dummyCompilation3, ImmutableArray.Create("R"))
});
compilation.VerifyDiagnostics(
// (2,1): info CS8020: Unused extern alias.
// extern alias P;
Diagnostic(ErrorCode.HDN_UnusedExternAlias, "extern alias P;"),
// (8,5): info CS8020: Unused extern alias.
// extern alias Q;
Diagnostic(ErrorCode.HDN_UnusedExternAlias, "extern alias Q;"),
// (14,9): info CS8020: Unused extern alias.
// extern alias R;
Diagnostic(ErrorCode.HDN_UnusedExternAlias, "extern alias R;"));
compilation.VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""22"" endLine=""4"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""P"" />
<externinfo alias=""P"" assembly=""a, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
<externinfo alias=""Q"" assembly=""b, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
<externinfo alias=""R"" assembly=""c, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
</scope>
</method>
<method containingType=""X.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
<forwardToModule declaringType=""A"" methodName=""M"" />
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""10"" startColumn=""24"" endLine=""10"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""10"" startColumn=""26"" endLine=""10"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""Q"" />
<extern alias=""P"" />
</scope>
</method>
<method containingType=""X.Y.C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
<namespace usingCount=""1"" />
</using>
<forwardToModule declaringType=""A"" methodName=""M"" />
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""16"" startColumn=""28"" endLine=""16"" endColumn=""29"" document=""1"" />
<entry offset=""0x1"" startLine=""16"" startColumn=""30"" endLine=""16"" endColumn=""31"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""R"" />
<extern alias=""Q"" />
<extern alias=""P"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact]
[WorkItem(1120579, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1120579")]
public void TestExternAliases2()
{
string source1 = @"
namespace U.V.W {}
";
var compilation1 = CreateCompilation(source1, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll, assemblyName: "TestExternAliases2");
string source2 = @"
using U.V.W;
class A { void M() { } }
";
var compilation2 = CreateCompilation(
source2,
parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(),
options: TestOptions.DebugDll,
references: new[]
{
// first unaliased reference
compilation1.ToMetadataReference(),
// second aliased reference
compilation1.ToMetadataReference(ImmutableArray.Create("X"))
});
compilation2.VerifyPdb("A.M", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""23"" endLine=""4"" endColumn=""24"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<namespace name=""U.V.W"" />
<externinfo alias=""X"" assembly=""TestExternAliases2, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
</scope>
</method>
</methods>
</symbols>
");
}
[Fact]
[WorkItem(1120579, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1120579")]
public void TestExternAliases3()
{
string source1 = @"
namespace U.V.W {}
";
var compilation1 = CreateCompilation(source1, parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(), options: TestOptions.DebugDll, assemblyName: "TestExternAliases3");
string source2 = @"
using U.V.W;
class A { void M() { } }
";
var compilation2 = CreateCompilation(
source2,
parseOptions: TestOptions.Regular.WithNoRefSafetyRulesAttribute(),
options: TestOptions.DebugDll,
references: new[]
{
// first aliased reference
compilation1.ToMetadataReference(ImmutableArray.Create("X")),
// second unaliased reference
compilation1.ToMetadataReference(),
});
compilation2.VerifyPdb("A.M", @"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""A"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""4"" startColumn=""20"" endLine=""4"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""4"" startColumn=""23"" endLine=""4"" endColumn=""24"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<namespace name=""U.V.W"" />
<externinfo alias=""X"" assembly=""TestExternAliases3, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
</scope>
</method>
</methods>
</symbols>
");
}
[Fact]
[WorkItem(60045, "https://github.com/dotnet/roslyn/issues/60045")]
public void ExternAliases4()
{
var src1 = @"
namespace N
{
public class C { }
}";
var dummyCompilation = CreateCompilation(src1, assemblyName: "A", options: TestOptions.DebugDll);
var src2 = @"
namespace M
{
extern alias A;
using A::N;
public class D
{
public C P
{
get { return new C(); }
set { }
}
}
}";
var compilation = CreateCompilation(src2,
assemblyName: GetUniqueName(),
options: TestOptions.DebugDll,
references: new[]
{
new CSharpCompilationReference(dummyCompilation, ImmutableArray.Create("A", "A")),
});
compilation.VerifyDiagnostics();
compilation.GetEmitDiagnostics();
compilation.VerifyEmitDiagnostics();
}
[WorkItem(63927, "https://github.com/dotnet/roslyn/issues/63927")]
[Fact]
public void ExternAliases5()
{
string sourceA =
@"public class A { }";
var comp = CreateCompilation(sourceA, assemblyName: "A1");
var refA = comp.EmitToImageReference(aliases: ImmutableArray.Create("A2"));
string sourceB =
@"#nullable enable
extern alias A2;
class B
{
static void F(A2::A? a) { }
}
";
comp = CreateCompilation(sourceB, references: new[] { refA }, options: TestOptions.DebugDll);
comp.VerifyDiagnostics();
comp.VerifyPdb(
@"<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""B"" name=""F"" parameterNames=""a"">
<customDebugInfo>
<using>
<namespace usingCount=""1"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""5"" startColumn=""29"" endLine=""5"" endColumn=""30"" document=""1"" />
<entry offset=""0x1"" startLine=""5"" startColumn=""31"" endLine=""5"" endColumn=""32"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""A2"" />
<externinfo alias=""A2"" assembly=""A1, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
</scope>
</method>
</methods>
</symbols>
");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestExternAliases_ExplicitAndGlobal()
{
var dummySource = @"
namespace N
{
public class C { }
}
";
CSharpCompilation dummyCompilation1 = CreateCompilation(dummySource, assemblyName: "A", options: TestOptions.DebugDll);
CSharpCompilation dummyCompilation2 = CreateCompilation(dummySource, assemblyName: "B", options: TestOptions.DebugDll);
var text = @"
extern alias A;
extern alias B;
using X = A::N;
using Y = B::N;
using Z = global::N;
class C { void M() { } }
";
var compilation = CreateCompilation(text,
assemblyName: GetUniqueName(),
options: TestOptions.DebugDll,
references: new[]
{
new CSharpCompilationReference(dummyCompilation1, ImmutableArray.Create("global", "A")),
new CSharpCompilationReference(dummyCompilation2, ImmutableArray.Create("B", "global"))
});
compilation.VerifyDiagnostics(
// (5,1): hidden CS8019: Unnecessary using directive.
// using Y = B::N;
Diagnostic(ErrorCode.HDN_UnusedUsingDirective, "using Y = B::N;").WithLocation(5, 1),
// (4,1): hidden CS8019: Unnecessary using directive.
// using X = A::N;
Diagnostic(ErrorCode.HDN_UnusedUsingDirective, "using X = A::N;").WithLocation(4, 1),
// (6,1): hidden CS8019: Unnecessary using directive.
// using Z = global::N;
Diagnostic(ErrorCode.HDN_UnusedUsingDirective, "using Z = global::N;").WithLocation(6, 1));
compilation.VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""C"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""5""/>
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""8"" startColumn=""20"" endLine=""8"" endColumn=""21"" document=""1"" />
<entry offset=""0x1"" startLine=""8"" startColumn=""22"" endLine=""8"" endColumn=""23"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""A""/>
<extern alias=""B""/>
<alias name=""X"" target=""N"" kind=""namespace""/>
<alias name=""Y"" target=""N"" kind=""namespace""/>
<alias name=""Z"" target=""N"" kind=""namespace""/>
<externinfo alias=""A"" assembly=""A, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null""/>
<externinfo alias=""B"" assembly=""B, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null""/>
</scope>
</method>
</methods>
</symbols>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestExternAliasesInUsing()
{
CSharpCompilation libComp = CreateCompilation(@"
namespace N
{
public class A { }
}", assemblyName: "Lib");
var text = @"
extern alias P;
using P::N;
using Q = P::N.A;
using R = P::N;
using global::N;
using S = global::N.B;
using T = global::N;
namespace N
{
class B { void M() { } }
}
";
var compilation = CreateCompilation(text,
assemblyName: "Test",
options: TestOptions.DebugDll,
references: new[] { new CSharpCompilationReference(libComp, ImmutableArray.Create("P")) });
compilation.GetDiagnostics().Where(d => d.Severity > DiagnosticSeverity.Info).Verify();
compilation.VerifyPdb(@"
<symbols>
<files>
<file id=""1"" name="""" language=""C#"" />
</files>
<methods>
<method containingType=""N.B"" name=""M"">
<customDebugInfo>
<using>
<namespace usingCount=""0"" />
<namespace usingCount=""7"" />
</using>
</customDebugInfo>
<sequencePoints>
<entry offset=""0x0"" startLine=""12"" startColumn=""24"" endLine=""12"" endColumn=""25"" document=""1"" />
<entry offset=""0x1"" startLine=""12"" startColumn=""26"" endLine=""12"" endColumn=""27"" document=""1"" />
</sequencePoints>
<scope startOffset=""0x0"" endOffset=""0x2"">
<extern alias=""P"" />
<namespace qualifier=""P"" name=""N"" />
<namespace name=""N"" />
<alias name=""Q"" target=""N.A, Lib, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" kind=""type"" />
<alias name=""R"" qualifier=""P"" target=""N"" kind=""namespace"" />
<alias name=""S"" target=""N.B"" kind=""type"" />
<alias name=""T"" target=""N"" kind=""namespace"" />
<externinfo alias=""P"" assembly=""Lib, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"" />
</scope>
</method>
</methods>
</symbols>");
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/25737")]
public void TestNamespacesAndAliases()
{
CSharpCompilation dummyCompilation1 = CreateDummyCompilation("a");
CSharpCompilation dummyCompilation2 = CreateDummyCompilation("b");
CSharpCompilation dummyCompilation3 = CreateDummyCompilation("c");
var text = @"
extern alias P;
using System;
using AU1 = System;
using AT1 = System.Char;
class A { void M() { } }
namespace X
{
extern alias Q;
using AU2 = System.IO;
using AT2 = System.IO.Directory;
using System.IO;