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sdk/test/Microsoft.DotNet.GenAPI.Tests/CSharpFileBuilderTests.cs

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112 KiB
C#
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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.
using System.Runtime.CompilerServices;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.DotNet.ApiSymbolExtensions;
using Microsoft.DotNet.ApiSymbolExtensions.Filtering;
using Microsoft.DotNet.ApiSymbolExtensions.Logging;
using Microsoft.DotNet.ApiSymbolExtensions.Tests;
using Microsoft.DotNet.GenAPI.Filtering;
namespace Microsoft.DotNet.GenAPI.Tests
{
public class CSharpFileBuilderTests
{
class AllowAllFilter : ISymbolFilter
{
public bool Include(ISymbol symbol) => true;
}
private static MetadataReference[] MetadataReferences { get; } = new[] { MetadataReference.CreateFromFile(typeof(object).Assembly!.Location!) };
private static SyntaxTree GetSyntaxTree(string syntax) =>
CSharpSyntaxTree.ParseText(syntax);
private void RunTest(string original,
string expected,
bool includeInternalSymbols = true,
bool includeEffectivelyPrivateSymbols = true,
bool includeExplicitInterfaceImplementationSymbols = true,
bool allowUnsafe = false,
string excludedAttributeFile = null,
[CallerMemberName] string assemblyName = "")
{
StringWriter stringWriter = new();
// Configure symbol filters
AccessibilitySymbolFilter accessibilitySymbolFilter = new(
includeInternalSymbols,
includeEffectivelyPrivateSymbols,
includeExplicitInterfaceImplementationSymbols);
CompositeSymbolFilter symbolFilter = new CompositeSymbolFilter()
.Add(new ImplicitSymbolFilter())
.Add(accessibilitySymbolFilter);
CompositeSymbolFilter attributeDataSymbolFilter = new();
if (excludedAttributeFile is not null)
{
attributeDataSymbolFilter.Add(new DocIdSymbolFilter(new string[] { excludedAttributeFile }));
}
attributeDataSymbolFilter.Add(accessibilitySymbolFilter);
IAssemblySymbolWriter csharpFileBuilder = new CSharpFileBuilder(
new ConsoleLog(MessageImportance.Low),
symbolFilter,
attributeDataSymbolFilter,
stringWriter,
null,
false,
MetadataReferences);
using Stream assemblyStream = SymbolFactory.EmitAssemblyStreamFromSyntax(original, enableNullable: true, allowUnsafe: allowUnsafe, assemblyName: assemblyName);
AssemblySymbolLoader assemblySymbolLoader = new(resolveAssemblyReferences: true, includeInternalSymbols: includeInternalSymbols);
assemblySymbolLoader.AddReferenceSearchPaths(typeof(object).Assembly!.Location!);
assemblySymbolLoader.AddReferenceSearchPaths(typeof(DynamicAttribute).Assembly!.Location!);
IAssemblySymbol assemblySymbol = assemblySymbolLoader.LoadAssembly(assemblyName, assemblyStream);
csharpFileBuilder.WriteAssembly(assemblySymbol);
StringBuilder stringBuilder = stringWriter.GetStringBuilder();
string resultedString = stringBuilder.ToString();
stringBuilder.Remove(0, stringBuilder.Length);
SyntaxTree resultedSyntaxTree = GetSyntaxTree(resultedString);
SyntaxTree expectedSyntaxTree = GetSyntaxTree(expected);
// compare SyntaxTree and not string representation
Assert.True(resultedSyntaxTree.IsEquivalentTo(expectedSyntaxTree),
$"Expected:\n{expected}\nResulted:\n{resultedString}");
}
[Fact]
public void TestNamespaceDeclaration()
{
RunTest(original: """
namespace A
{
namespace B {}
namespace C.D { public struct Bar {} }
}
""",
expected: """
namespace A.C.D { public partial struct Bar {} }
""");
}
[Fact]
public void TestClassDeclaration()
{
RunTest(original: """
namespace Foo
{
public class PublicClass { }
class InternalClass { }
public sealed class PublicSealedClass { }
public partial class ProtectedPartialClass { }
}
""",
expected: """
namespace Foo
{
internal partial class InternalClass { }
/// `partial` keyword is not added!
public partial class ProtectedPartialClass { }
public partial class PublicClass { }
public sealed partial class PublicSealedClass { }
}
""");
}
[Fact]
public void TestStructDeclaration()
{
RunTest(original: """
namespace Foo
{
public struct PublicStruct { }
struct InternalStruct { }
readonly struct ReadonlyStruct { }
public readonly struct PublicReadonlyStruct { }
record struct RecordStruct { }
readonly record struct ReadonlyRecordStruct { }
public ref struct PublicRefStruct { }
public readonly ref struct PublicReadonlyRefStruct { }
}
""",
// It's expected that record structs are expanded - they're effectively syntactic sugar that is not persisted in metadata
expected: """
namespace Foo
{
internal partial struct InternalStruct
{
}
public readonly ref partial struct PublicReadonlyRefStruct
{
}
public readonly partial struct PublicReadonlyStruct
{
}
public ref partial struct PublicRefStruct
{
}
public partial struct PublicStruct
{
}
internal readonly partial struct ReadonlyRecordStruct : System.IEquatable<ReadonlyRecordStruct>
{
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(ReadonlyRecordStruct other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(ReadonlyRecordStruct left, ReadonlyRecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(ReadonlyRecordStruct left, ReadonlyRecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
internal readonly partial struct ReadonlyStruct
{
}
internal partial struct RecordStruct : System.IEquatable<RecordStruct>
{
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStruct other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStruct left, RecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStruct left, RecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
}
""");
}
[Fact]
public void TestRecordDeclaration()
{
RunTest(original: """
namespace Foo
{
public record RecordClass;
public record RecordClass1(int i);
public record RecordClass2(string s, int i);
public record DerivedRecord(string s, int i, double d) : RecordClass2(s, i);
public record DerivedRecord2(string x, int i, double d) : RecordClass2(default(string)!, i);
public record DerivedRecord3(string x, int i, double d) : RecordClass2(default(string)!, i);
public record DerivedRecord4(double d) : RecordClass2(default(string)!, default);
public record DerivedRecord5() : RecordClass2(default(string)!, default);
public record RecordClassWithMethods(int i)
{
public void DoSomething() { }
public static void DoSomethingStatic() { }
}
public record RecordClassWithProperties(int i)
{
public int AddI { get; set; }
public int AddIinit { get; init; }
public int AddIro { get; }
}
public record RecordClassWithConstructors(int i)
{
public RecordClassWithConstructors() : this(1) { }
public RecordClassWithConstructors(string s) : this(int.Parse(s)) { }
}
public record RecordWithPrivateDefaultConstructor
{
private RecordWithPrivateDefaultConstructor() { }
}
public sealed record SealedRecordWithPrivateDefaultConstructor
{
private SealedRecordWithPrivateDefaultConstructor() { }
}
}
""",
expected: """
namespace Foo
{
public partial record DerivedRecord(string s, int i, double d) : RecordClass2(default!, default)
{
}
public partial record DerivedRecord2(string x, int i, double d) : RecordClass2(default!, default)
{
}
public partial record DerivedRecord3(string x, int i, double d) : RecordClass2(default!, default)
{
}
public partial record DerivedRecord4(double d) : RecordClass2(default!, default)
{
}
public partial record DerivedRecord5() : RecordClass2(default!, default)
{
}
public partial record RecordClass()
{
}
public partial record RecordClass1(int i)
{
}
public partial record RecordClass2(string s, int i)
{
}
public partial record RecordClassWithConstructors(int i)
{
public RecordClassWithConstructors() { }
public RecordClassWithConstructors(string s) { }
}
public partial record RecordClassWithMethods(int i)
{
public void DoSomething() { }
public static void DoSomethingStatic() { }
}
public partial record RecordClassWithProperties(int i)
{
public int AddI { get { throw null; } set { } }
public int AddIinit { get { throw null; } init { } }
public int AddIro { get { throw null; } }
}
public partial record RecordWithPrivateDefaultConstructor
{
private RecordWithPrivateDefaultConstructor() { }
}
public sealed partial record SealedRecordWithPrivateDefaultConstructor
{
private SealedRecordWithPrivateDefaultConstructor() { }
}
}
""");
}
[Fact]
public void TestRecordStructDeclaration()
{
RunTest(original: """
namespace Foo
{
public record struct RecordStruct;
public record struct RecordStruct1(int i);
public record struct RecordStruct2(string s, int i);
public record struct RecordStructWithMethods(int i)
{
public void DoSomething() { }
public static void DoSomethingStatic() { }
}
public record struct RecordStructWithProperties(int i)
{
public int AddI { get; set; }
public int AddIinit { get; init; }
public int AddIro { get; }
}
public record struct RecordStructWithConstructors(int i)
{
public RecordStructWithConstructors() : this(1) { }
public RecordStructWithConstructors(string s) : this(int.Parse(s)) { }
}
}
""",
expected: """
namespace Foo
{
public partial struct RecordStruct : System.IEquatable<RecordStruct>
{
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStruct other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStruct left, RecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStruct left, RecordStruct right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
public partial struct RecordStruct1 : System.IEquatable<RecordStruct1>
{
private int _dummyPrimitive;
public RecordStruct1(int i) { }
public int i { get { throw null; } set { } }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly void Deconstruct(out int i) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStruct1 other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStruct1 left, RecordStruct1 right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStruct1 left, RecordStruct1 right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
public partial struct RecordStruct2 : System.IEquatable<RecordStruct2>
{
private object _dummy;
private int _dummyPrimitive;
public RecordStruct2(string s, int i) { }
public int i { get { throw null; } set { } }
public string s { get { throw null; } set { } }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly void Deconstruct(out string s, out int i) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStruct2 other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStruct2 left, RecordStruct2 right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStruct2 left, RecordStruct2 right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
public partial struct RecordStructWithConstructors : System.IEquatable<RecordStructWithConstructors>
{
private int _dummyPrimitive;
public RecordStructWithConstructors() { }
public RecordStructWithConstructors(int i) { }
public RecordStructWithConstructors(string s) { }
public int i { get { throw null; } set { } }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly void Deconstruct(out int i) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStructWithConstructors other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStructWithConstructors left, RecordStructWithConstructors right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStructWithConstructors left, RecordStructWithConstructors right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
public partial struct RecordStructWithMethods : System.IEquatable<RecordStructWithMethods>
{
private int _dummyPrimitive;
public RecordStructWithMethods(int i) { }
public int i { get { throw null; } set { } }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly void Deconstruct(out int i) { throw null; }
public void DoSomething() { }
public static void DoSomethingStatic() { }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStructWithMethods other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStructWithMethods left, RecordStructWithMethods right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStructWithMethods left, RecordStructWithMethods right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
public partial struct RecordStructWithProperties : System.IEquatable<RecordStructWithProperties>
{
private int _dummyPrimitive;
public RecordStructWithProperties(int i) { }
public int AddI { get { throw null; } set { } }
public int AddIinit { get { throw null; } init { } }
public int AddIro { get { throw null; } }
public int i { get { throw null; } set { } }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly void Deconstruct(out int i) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public readonly bool Equals(RecordStructWithProperties other) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly bool Equals(object obj) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly int GetHashCode() { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator ==(RecordStructWithProperties left, RecordStructWithProperties right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public static bool operator !=(RecordStructWithProperties left, RecordStructWithProperties right) { throw null; }
[System.Runtime.CompilerServices.CompilerGenerated]
public override readonly string ToString() { throw null; }
}
}
""");
}
[Fact]
public void TestInterfaceGeneration()
{
RunTest(original: """
namespace Foo
{
public interface IPoint
{
// Property signatures:
int X { get; set; }
int Y { get; set; }
double CalculateDistance(IPoint p);
}
}
""",
expected: """
namespace Foo
{
public partial interface IPoint
{
// Property signatures:
int X { get; set; }
int Y { get; set; }
double CalculateDistance(IPoint p);
}
}
""");
}
[Fact]
public void TestEnumGeneration()
{
RunTest(original: """
namespace Foo
{
public enum Color
{
White = 0,
Green = 100,
Blue = 200
}
}
""",
expected: """
namespace Foo
{
public enum Color
{
White = 0,
Green = 100,
Blue = 200
}
}
""");
}
[Fact]
public void TestPropertyGeneration()
{
RunTest(original: """
namespace Foo
{
public class Car
{
public int? Drivers { get; }
public int Wheels { get => 4; }
public bool IsRunning { get; set; }
public bool Is4x4 { get => false; set { } }
}
}
""",
expected: """
namespace Foo
{
public partial class Car
{
public int? Drivers { get { throw null; } }
public bool Is4x4 { get { throw null; } set { } }
public bool IsRunning { get { throw null; } set { } }
public int Wheels { get { throw null; } }
}
}
""");
}
[Fact]
public void TestAbstractPropertyGeneration()
{
RunTest(original: """
namespace Foo
{
abstract class Car
{
abstract protected int? Wheels { get; }
abstract public bool IsRunning { get; set; }
}
}
""",
expected: """
namespace Foo
{
internal abstract partial class Car
{
public abstract bool IsRunning { get; set; }
protected abstract int? Wheels { get; }
}
}
""");
}
[Fact]
public void TestExplicitInterfaceImplementation()
{
RunTest(original: """
namespace Foo
{
public interface IControl
{
void Paint();
}
public interface ISurface
{
void Paint();
}
public class SampleClass : IControl, ISurface
{
public void Paint()
{
}
}
}
""",
expected: """
namespace Foo
{
public partial interface IControl
{
void Paint();
}
public partial interface ISurface
{
void Paint();
}
public partial class SampleClass : IControl, ISurface
{
public void Paint()
{
}
}
}
""");
}
[Fact]
public void TestPartiallySpecifiedGenericClassGeneration()
{
RunTest(original: """
namespace Foo
{
public class BaseNodeMultiple<T, U> { }
public class Node4<T> : BaseNodeMultiple<T, int> { }
public class Node5<T, U> : BaseNodeMultiple<T, U> { }
}
""",
expected: """
namespace Foo
{
public partial class BaseNodeMultiple <T, U> { }
public partial class Node4 <T> : BaseNodeMultiple<T, int> { }
public partial class Node5 <T, U> : BaseNodeMultiple<T, U> { }
}
""");
}
[Fact]
public void TestGenericClassWitConstraintsParameterGeneration()
{
RunTest(original: """
namespace Foo
{
public class SuperKeyType<K, V, U>
where U : System.IComparable<U>
where V : new()
{ }
}
""",
expected: """
namespace Foo
{
public partial class SuperKeyType <K, V, U> where V : new()
where U : System.IComparable<U>
{
}
}
""");
}
[Fact]
public void TestPublicMembersGeneration()
{
RunTest(original: """
namespace Foo
{
public enum Kind
{
None = 0,
Disable = 1
}
public readonly struct Options
{
public readonly bool BoolMember = true;
public readonly Kind KindMember = Kind.Disable;
public Options(Kind kindVal)
: this(kindVal, false)
{
}
public Options(Kind kindVal, bool boolVal)
{
BoolMember = boolVal;
KindMember = kindVal;
}
}
}
""",
expected: """
namespace Foo
{
public enum Kind
{
None = 0,
Disable = 1
}
public readonly partial struct Options
{
public readonly bool BoolMember;
public readonly Kind KindMember;
public Options(Kind kindVal, bool boolVal) { }
public Options(Kind kindVal) { }
}
}
""");
}
[Fact]
public void TestDelegateGeneration()
{
RunTest(original: """
namespace Foo
{
public delegate bool SyntaxReceiverCreator(int a, bool b);
}
""",
expected: """
namespace Foo
{
public delegate bool SyntaxReceiverCreator(int a, bool b);
}
""");
}
[Fact]
public void TestAbstractEventGeneration()
{
RunTest(original: """
namespace Foo
{
public abstract class AbstractEvents
{
public abstract event System.EventHandler<bool> TextChanged;
}
public class Events
{
public event System.EventHandler<string> OnNewMessage { add { } remove { } }
}
}
""",
expected: """
namespace Foo
{
public abstract partial class AbstractEvents
{
public abstract event System.EventHandler<bool> TextChanged;
}
public partial class Events
{
public event System.EventHandler<string> OnNewMessage { add { } remove { } }
}
}
""");
}
[Fact]
public void TestCustomAttributeGeneration()
{
RunTest(original: """
using System;
using System.Diagnostics;
namespace Foo
{
public enum Animal
{
Dog = 1,
Cat,
Bird,
}
public class AnimalTypeAttribute : Attribute
{
protected Animal thePet;
public AnimalTypeAttribute(Animal pet)
{
thePet = pet;
}
public Animal Pet
{
get { return thePet; }
set { thePet = value; }
}
}
[AnimalType(Animal.Cat)]
public class Creature
{
[AnimalType(Animal.Cat)]
[Conditional("DEBUG"), Conditional("TEST1")]
public void SayHello() { }
}
}
""",
expected: """
namespace Foo
{
public enum Animal
{
Dog = 1,
Cat = 2,
Bird = 3
}
public partial class AnimalTypeAttribute : System.Attribute
{
protected Animal thePet;
public AnimalTypeAttribute(Animal pet) { }
public Animal Pet { get { throw null; } set { } }
}
[AnimalType(Animal.Cat)]
public partial class Creature
{
[AnimalType(Animal.Cat)]
[System.Diagnostics.Conditional("DEBUG")]
[System.Diagnostics.Conditional("TEST1")]
public void SayHello() { }
}
}
""");
}
[Fact]
public void TestFullyQualifiedNamesForDefaultEnumParameters()
{
RunTest(original: """
namespace Foo
{
public enum Animal
{
Dog = 1,
Cat = 2,
Bird = 3
}
public class AnimalProperty {
public Animal _animal;
public AnimalProperty(Animal animal = Animal.Cat)
{
_animal = animal;
}
public int Execute(int p = 42) { return p; }
}
}
""",
expected: """
namespace Foo
{
public enum Animal
{
Dog = 1,
Cat = 2,
Bird = 3
}
public partial class AnimalProperty {
public Animal _animal;
public AnimalProperty(Animal animal = Animal.Cat) { }
public int Execute(int p = 42) { throw null; }
}
}
""");
}
[Fact]
public void TestCustomComparisonOperatorGeneration()
{
RunTest(original: """
namespace Foo
{
public class Car : System.IEquatable<Car>
{
public bool Equals(Car? c) { return true; }
public override bool Equals(object? o) { return true; }
public override int GetHashCode() => 0;
public static bool operator ==(Car lhs, Car rhs) { return true; }
public static bool operator !=(Car lhs, Car rhs) { return false; }
}
}
""",
expected: """
namespace Foo
{
public partial class Car : System.IEquatable<Car>
{
public bool Equals(Car? c) { throw null; }
public override bool Equals(object? o) { throw null; }
public override int GetHashCode() { throw null; }
public static bool operator ==(Car lhs, Car rhs) { throw null; }
public static bool operator !=(Car lhs, Car rhs) { throw null; }
}
}
""");
}
[Fact]
public void TestNestedClassGeneration()
{
RunTest(original: """
namespace Foo
{
public class Car
{
public class Engine
{
public class Cylinder
{ }
}
}
}
""",
expected: """
namespace Foo
{
public partial class Car
{
public partial class Engine
{
public partial class Cylinder
{ }
}
}
}
""");
}
[Fact]
public void TestExplicitInterfaceImplementationMethodGeneration()
{
RunTest(original: """
namespace Foo
{
public abstract class MemoryManager : System.IDisposable
{
void System.IDisposable.Dispose() { }
}
}
""",
expected: """
namespace Foo
{
public abstract partial class MemoryManager : System.IDisposable
{
void System.IDisposable.Dispose() { }
}
}
""");
}
[Fact]
public void TestNullabilityGeneration()
{
RunTest(original: """
namespace Foo
{
public class Bar
{
public int? AMember { get; set; }
public string? BMember { get; }
public string? Execute(string? a, int? b) { return null; }
}
}
""",
expected: """
namespace Foo
{
public partial class Bar
{
public int? AMember { get { throw null; } set { } }
public string? BMember { get { throw null; } }
public string? Execute(string? a, int? b) { throw null; }
}
}
""");
}
[Fact]
public void TestExtensionMethodsGeneration()
{
RunTest(original: """
namespace Foo
{
public static class MyExtensions
{
public static int WordCount(this string str) { return 42; }
}
}
""",
expected: """
namespace Foo
{
public static partial class MyExtensions
{
public static int WordCount(this string str) { throw null; }
}
}
""");
}
[Fact]
public void TestMethodsWithVariableNumberOfArgumentsGeneration()
{
RunTest(original: """
namespace Foo
{
public class Bar
{
public void Execute(params int[] list) { }
}
}
""",
expected: """
namespace Foo
{
public partial class Bar
{
public void Execute(params int[] list) { }
}
}
""");
}
[Fact]
public void TestConversionOperatorGeneration()
{
RunTest(original: """
namespace Foo
{
public readonly struct Digit
{
private readonly byte digit;
public Digit(byte digit)
{
this.digit = digit;
}
public static implicit operator byte(Digit d) => d.digit;
public static explicit operator Digit(byte b) => new Digit(b);
}
}
""",
expected: """
namespace Foo
{
public readonly partial struct Digit
{
private readonly int _dummyPrimitive;
public Digit(byte digit) { }
public static explicit operator Digit(byte b) { throw null; }
public static implicit operator byte(Digit d) { throw null; }
}
}
""");
}
[Fact]
public void TestDestructorGeneration()
{
RunTest(original: """
namespace Foo
{
public class Bar
{
~Bar() {}
}
}
""",
expected: """
namespace Foo
{
public partial class Bar
{
~Bar() {}
}
}
""");
}
[Fact]
public void TestExplicitInterfaceImplementationPropertyGeneration()
{
RunTest(original: """
namespace Foo
{
public interface IFoo
{
int FooField { get; set; }
void FooMethod();
}
public class Bar : IFoo
{
int BarField { get; set; }
int IFoo.FooField { get; set; }
void IFoo.FooMethod() { }
}
}
""",
expected: """
namespace Foo
{
public partial class Bar : IFoo
{
int IFoo.FooField { get { throw null; } set { } }
void IFoo.FooMethod() { }
}
public partial interface IFoo
{
int FooField { get; set; }
void FooMethod();
}
}
""");
}
[Fact]
public void TestAccessibilityGenerationForPropertyAccessors()
{
RunTest(original: """
namespace Foo
{
public class Bar
{
public int P { get; protected set; }
}
}
""",
expected: """
namespace Foo
{
public partial class Bar
{
public int P { get { throw null; } protected set { } }
}
}
""");
}
[Fact]
public void TestConstantFieldGeneration()
{
RunTest(original: """
namespace Foo
{
public class Bar
{
public const int CurrentEra = 0;
}
}
""",
expected: """
namespace Foo
{
public partial class Bar
{
public const int CurrentEra = 0;
}
}
"""
);
}
[Fact]
public void TestTypeParameterVarianceGeneration()
{
RunTest(original: """
namespace Foo
{
public delegate void Action<in T>(T obj);
public partial interface IAsyncEnumerable<out T>
{
}
}
""",
expected: """
namespace Foo
{
public delegate void Action<in T>(T obj);
public partial interface IAsyncEnumerable<out T>
{
}
}
"""
);
}
[Fact]
public void TestRefMembersGeneration()
{
RunTest(original: """
namespace Foo
{
public class Bar<T>
{
#pragma warning disable CS8597
public ref T GetPinnableReference() { throw null; }
public ref readonly T this[int index] { get { throw null; } }
public ref int P { get { throw null; } }
#pragma warning restore CS8597
}
}
""",
expected: """
namespace Foo
{
public partial class Bar<T>
{
#pragma warning disable CS8597
public ref readonly T this[int index] { get { throw null; } }
public ref int P { get { throw null; } }
public ref T GetPinnableReference() { throw null; }
#pragma warning restore CS8597
}
}
"""
);
}
[Fact]
public void TestDefaultConstraintOnOverrideGeneration()
{
RunTest(original: """
namespace Foo
{
public abstract partial class A
{
public abstract TResult? Accept<TResult>(int a);
}
public sealed partial class B : A
{
#pragma warning disable CS8597
public override TResult? Accept<TResult>(int a) where TResult : default { throw null; }
#pragma warning restore CS8597
}
}
""",
expected: """
namespace Foo
{
public abstract partial class A
{
public abstract TResult? Accept<TResult>(int a);
}
public sealed partial class B : A
{
#pragma warning disable CS8597
public override TResult? Accept<TResult>(int a) where TResult : default { throw null; }
#pragma warning restore CS8597
}
}
"""
);
}
[Fact]
public void TestSynthesizePrivateFieldsForValueTypes()
{
RunTest(original: """
using System;
namespace Foo
{
public struct Bar
{
#pragma warning disable 0169
private IntPtr intPtr;
}
}
""",
expected: """
namespace Foo
{
public partial struct Bar
{
private int _dummyPrimitive;
}
}
""");
}
[Fact]
public void TestSynthesizePrivateFieldsForReferenceTypes()
{
RunTest(original: """
namespace Foo
{
public struct Bar
{
#pragma warning disable 0169
private object field;
}
}
""",
expected: """
namespace Foo
{
public partial struct Bar
{
private object _dummy;
private int _dummyPrimitive;
}
}
""");
}
[Fact]
public void TestSynthesizePrivateFieldsForGenericTypes()
{
RunTest(original: """
namespace Foo
{
public struct Bar<T>
{
#pragma warning disable 0169
private T _field;
}
}
""",
expected: """
namespace Foo
{
public partial struct Bar<T>
{
private T _field;
}
}
""");
}
[Fact]
public void TestSynthesizePrivateFieldsForNestedGenericTypes()
{
RunTest(original: """
using System.Collections.Generic;
namespace Foo
{
public struct Bar<T> where T : notnull
{
#pragma warning disable 0169
private Dictionary<int, List<T>> _field;
}
}
""",
expected: """
namespace Foo
{
public partial struct Bar<T>
{
private System.Collections.Generic.Dictionary<int, System.Collections.Generic.List<T>> _field;
private object _dummy;
private int _dummyPrimitive;
}
}
""");
}
[Fact]
public void TestSynthesizePrivateFieldsAngleBrackets()
{
RunTest(original: """
using System.Collections.Generic;
namespace Foo
{
public readonly struct Bar<T> where T : notnull
{
public List<Bar<T>> Baz { get; }
}
}
""",
expected: """
namespace Foo
{
public readonly partial struct Bar<T>
{
private readonly System.Collections.Generic.List<Bar<T>> _Baz_k__BackingField;
private readonly object _dummy;
private readonly int _dummyPrimitive;
public System.Collections.Generic.List<Bar<T>> Baz { get { throw null; } }
}
}
""");
}
[Fact]
public void TestSynthesizePrivateFieldsForInaccessibleNestedGenericTypes()
{
RunTest(original: """
namespace A
{
internal class Bar<T> {}
public struct Foo<T>
{
#pragma warning disable 0169
// as the includeInternalSymbols field is set to false and the Bar<> class is internal -
// we must skip generation of the `_field` private field.
private Bar<T> _field;
}
}
""",
expected: """
namespace A
{
public partial struct Foo<T>
{
private object _dummy;
private int _dummyPrimitive;
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestBaseTypeWithoutExplicitDefault()
{
RunTest(original: """
namespace A
{
public class B
{
}
public class C : B
{
public C() {}
}
}
""",
expected: """
namespace A
{
public partial class B
{
}
public partial class C : B
{
}
}
""");
}
[Fact]
public void TestBaseTypeWithExplicitDefaultConstructor()
{
RunTest(original: """
namespace A
{
public class B
{
public B() {}
}
public class C : B
{
public C() {}
}
}
""",
expected: """
namespace A
{
public partial class B
{
}
public partial class C : B
{
}
}
""");
}
[Fact]
public void TestInternalParameterlessConstructors()
{
RunTest(original: """
namespace A
{
public class B
{
internal B() {}
}
public class C : B
{
internal C() : base() {}
}
}
""",
expected: """
namespace A
{
public partial class B
{
internal B() {}
}
public partial class C : B
{
internal C() {}
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestInternalParameterizedConstructors()
{
RunTest(original: """
namespace A
{
public class B
{
public B(int i) {}
}
public class C : B
{
internal C() : base(0) {}
}
public class D : B
{
internal D(int i) : base(i) {}
}
public class E
{
internal E(int i) {}
internal E(string s) {}
internal E(P p) {}
}
internal class P { }
}
""",
expected: """
namespace A
{
public partial class B
{
public B(int i) {}
}
public partial class C : B
{
internal C() : base(default) {}
}
public partial class D : B
{
internal D() : base(default) {}
}
public partial class E
{
internal E() {}
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestInternalParameterizedConstructorsPreserveInternals()
{
RunTest(original: """
namespace A
{
public class B
{
public B(int i) {}
}
public class C : B
{
internal C() : base(0) {}
}
public class D : B
{
internal D(int i) : base(i) {}
}
public class E
{
internal E(int i) {}
internal E(string s) {}
internal E(P p) {}
}
internal class P { }
}
""",
expected: """
namespace A
{
public partial class B
{
public B(int i) { }
}
public partial class C : B
{
internal C() : base(default) { }
}
public partial class D : B
{
internal D(int i) : base(default) { }
}
public partial class E
{
internal E(P p) { }
internal E(int i) { }
internal E(string s) { }
}
internal partial class P
{
}
}
""",
includeInternalSymbols: true);
}
[Fact]
public void TestInternalConstructorCallingProtected()
{
RunTest(original: """
namespace A
{
public class B
{
protected B() {}
}
public class C : B
{
internal C() {}
}
}
""",
expected: """
namespace A
{
public partial class B
{
protected B() {}
}
public partial class C : B
{
internal C() {}
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestBaseTypeWithoutDefaultConstructor()
{
RunTest(original: """
namespace Foo
{
public class A
{
}
public class B
{
public B(int p1, string p2, A p3) { }
}
public class C : B
{
public C() : base(1, "", new A()) {}
}
}
""",
expected: """
namespace Foo
{
public partial class A
{
}
public partial class B
{
public B(int p1, string p2, A p3) { }
}
public partial class C : B
{
public C() : base(default, default!, default!) {}
}
}
""");
}
[Fact]
public void TestBaseTypeWithMultipleNonDefaultConstructors()
{
RunTest(original: """
namespace Foo
{
public class A
{
}
public class B
{
public B(int p1, string p2, A p3) { }
public B(int p1, string p2) { }
public B(int p1) { }
}
public class C : B
{
public C() : base(1, "", new A()) {}
}
}
""",
expected: """
namespace Foo
{
public partial class A
{
}
public partial class B
{
public B(int p1, string p2, A p3) { }
public B(int p1, string p2) { }
public B(int p1) { }
}
public partial class C : B
{
public C() : base(default) {}
}
}
""");
}
[Fact]
public void TestBaseTypeWithAmbiguousNonDefaultConstructors()
{
RunTest(original: """
namespace Foo
{
public class A
{
public A(char c) { }
public A(int i) { }
public A(string s) { }
}
public class B : A
{
public B() : base("") {}
}
}
""",
expected: """
namespace Foo
{
public partial class A
{
public A(char c) { }
public A(int i) { }
public A(string s) { }
}
public partial class B : A
{
public B() : base(default(char)) {}
}
}
""");
}
[Fact()]
public void TestBaseTypeWithAmbiguousNonDefaultConstructorsRegression31655()
{
RunTest(original: """
namespace Foo
{
public class A
{
public A(Id id, System.Collections.Generic.IEnumerable<D> deps) { }
public A(string s, V v) { }
}
public class B : A
{
public B() : base(new Id(), new D[0]) {}
}
public class D { }
public class Id { }
public class V { }
}
""",
expected: """
namespace Foo
{
public partial class A
{
public A(Id id, System.Collections.Generic.IEnumerable<D> deps) { }
public A(string s, V v) { }
}
public partial class B : A
{
public B() : base(default!, default(System.Collections.Generic.IEnumerable<D>)!) {}
}
public partial class D { }
public partial class Id { }
public partial class V { }
}
""");
}
[Fact]
public void TestBaseTypeConstructorWithObsoleteAttribute()
{
RunTest(original: """
namespace Foo
{
public class B
{
public B(int p1, string p2) { }
[System.Obsolete("Constructor is deprecated.", true)]
public B(int p1) { }
}
public class C : B
{
public C() : base(1, "") { }
}
}
""",
expected: """
namespace Foo
{
public partial class B
{
public B(int p1, string p2) { }
[System.Obsolete("Constructor is deprecated.", true)]
public B(int p1) { }
}
public partial class C : B
{
public C() : base(default, default!) { }
}
}
""");
}
[Fact]
public void TestObsoleteBaseTypeConstructorWithoutErrorParameter()
{
RunTest(original: """
namespace Foo
{
public class B
{
public B(int p1, string p2) { }
[System.Obsolete("Constructor is deprecated.")]
public B(int p1) { }
}
public class C : B
{
public C() : base(1, "") { }
}
}
""",
expected: """
namespace Foo
{
public partial class B
{
public B(int p1, string p2) { }
[System.Obsolete("Constructor is deprecated.")]
public B(int p1) { }
}
public partial class C : B
{
public C() : base(default) { }
}
}
""");
}
[Fact]
public void TestObsoleteBaseTypeConstructorWithoutMessageParameter()
{
RunTest(original: """
namespace Foo
{
public class B
{
public B(int p1, string p2) { }
[System.Obsolete(null)]
public B(int p1) { }
}
public class C : B
{
public C() : base(1, "") { }
}
}
""",
expected: """
namespace Foo
{
public partial class B
{
public B(int p1, string p2) { }
[System.Obsolete(null)]
public B(int p1) { }
}
public partial class C : B
{
public C() : base(default) { }
}
}
""");
}
[Fact]
public void TestFilterOutInternalExplicitInterfaceImplementation()
{
RunTest(original: """
namespace A
{
internal interface Foo
{
void XYZ();
int ABC { get; set; }
}
public class Bar : Foo
{
int Foo.ABC { get => 1; set { } }
void Foo.XYZ() { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestMethodsWithReferenceParameterGeneration()
{
RunTest(original: """
namespace A
{
public class foo
{
public void Execute(out int i) { i = 1; }
}
}
""",
expected: """
namespace A
{
public partial class foo
{
public void Execute(out int i) { throw null; }
}
}
""",
includeInternalSymbols: false);
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/74109")]
public void TestInterfaceWithOperatorGeneration()
{
RunTest(original: """
namespace A
{
public interface IntType
{
public static IntType operator +(IntType left, IntType right) => left + right;
}
}
""",
expected: """
namespace A
{
public partial interface IntType
{
public static IntType operator +(IntType left, IntType right) => left + right;
}
}
""",
includeInternalSymbols: false);
}
[Fact(Skip = "https://github.com/dotnet/roslyn/issues/74109")]
public void TestInterfaceWithCheckedOperatorGeneration()
{
RunTest(original: """
namespace A
{
public interface IAdditionOperators<TSelf, TOther, TResult>
where TSelf : IAdditionOperators<TSelf, TOther, TResult>?
{
static abstract TResult operator +(TSelf left, TOther right);
static virtual TResult operator checked +(TSelf left, TOther right) => left + right;
}
}
""",
expected: """
namespace A
{
public interface IAdditionOperators<TSelf, TOther, TResult>
where TSelf : IAdditionOperators<TSelf, TOther, TResult>?
{
static abstract TResult operator +(TSelf left, TOther right);
static virtual TResult operator checked +(TSelf left, TOther right) { throw null; }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestUnsafeFieldGeneration()
{
RunTest(original: """
namespace A
{
public struct Node
{
public unsafe Node* Left;
public unsafe Node* Right;
public int Value;
}
}
""",
expected: """
namespace A
{
public partial struct Node
{
public unsafe Node* Left;
public unsafe Node* Right;
public int Value;
}
}
""",
includeInternalSymbols: false,
allowUnsafe: true);
}
[Fact]
public void TestUnsafeMethodGeneration()
{
RunTest(original: """
namespace A
{
public unsafe class A
{
public virtual void F(char* p) {}
}
public class B: A
{
public unsafe override void F(char* p) {}
}
}
""",
expected: """
namespace A
{
public partial class A
{
public virtual unsafe void F(char* p) { }
}
public partial class B : A
{
public override unsafe void F(char* p) { }
}
}
""",
includeInternalSymbols: false,
allowUnsafe: true);
}
[Fact]
public void TestUnsafeConstructorGeneration()
{
RunTest(original: """
namespace A
{
public class Bar
{
public unsafe Bar(char* f) { }
}
public class Foo : Bar
{
public unsafe Foo(char* f) : base(f) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public unsafe Bar(char* f) { }
}
public partial class Foo : Bar
{
public unsafe Foo(char* f) : base(default) { }
}
}
""",
includeInternalSymbols: false,
allowUnsafe: true);
}
[Fact]
public void TestUnsafeBaseConstructorGeneration()
{
RunTest(original: """
namespace A
{
public class Bar
{
public unsafe Bar(char* f) { }
}
public class Foo : Bar
{
public unsafe Foo() : base(default) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public unsafe Bar(char* f) { }
}
public partial class Foo : Bar
{
public unsafe Foo() : base(default) { }
}
}
""",
includeInternalSymbols: false,
allowUnsafe: true);
}
[Fact]
public void TestInternalDefaultConstructorGeneration()
{
RunTest(original: """
namespace A
{
public class Bar
{
public Bar(int a) { }
}
public class Foo : Bar
{
internal Foo() : base(1) { }
}
}
namespace B
{
public class Bar
{
public Bar(int a) { }
}
public class Foo : Bar
{
private Foo() : base(1) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public Bar(int a) { }
}
public partial class Foo : Bar
{
internal Foo() : base(default) { }
}
}
namespace B
{
public partial class Bar
{
public Bar(int a) { }
}
public partial class Foo : Bar
{
internal Foo() : base(default) { }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestPrivateDefaultConstructorGeneration()
{
RunTest(original: """
namespace A
{
public class Bar
{
public Bar(int a) { }
}
public class Foo : Bar
{
private Foo() : base(1) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public Bar(int a) { }
}
public partial class Foo : Bar
{
private Foo() : base(default) { }
}
}
""",
includeInternalSymbols: true,
includeEffectivelyPrivateSymbols: true);
}
[Fact]
public void TestInternalDefaultConstructorGenerationForGenericType()
{
RunTest(original: """
namespace A
{
public class Bar
{
public Bar(int a) { }
}
public class Foo<T> : Bar
{
internal Foo() : base(1) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public Bar(int a) { }
}
public partial class Foo<T> : Bar
{
internal Foo() : base(default) { }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestExplicitParameterlessConstructorNotRemoved()
{
RunTest(original: """
namespace A
{
public class Bar
{
public Bar() { }
public Bar(int a) { }
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
public Bar() { }
public Bar(int a) { }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestBaseClassWithExplicitDefaultConstructor()
{
RunTest(original: """
namespace A
{
public class Bar
{
public Bar() { }
}
public class Foo : Bar
{
}
}
""",
expected: """
namespace A
{
public partial class Bar
{
}
public partial class Foo : Bar
{
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestGenericBaseInterfaceWithInaccessibleTypeArguments()
{
RunTest(original: """
namespace A
{
internal class IOption2
{
}
public interface IOption
{
}
public interface AreEqual<T>
{
bool Compare(T other);
}
public class PerLanguageOption : AreEqual<IOption2>, IOption
{
bool AreEqual<IOption2>.Compare(IOption2 other) => false;
}
}
""",
expected: """
namespace A
{
public partial interface AreEqual<T>
{
bool Compare(T other);
}
public partial interface IOption
{
}
public partial class PerLanguageOption : IOption
{
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void NewKeywordWhenBaseMethodIsHidden()
{
RunTest(original: """
namespace A
{
using System;
public partial class C : IFun, IExplicit, IExplicit2 {
public int Foo;
public const int Bar = 29;
public int Baz { get; }
public int ExplicitProperty { get; }
#pragma warning disable 8618
public event EventHandler MyEvent;
void IExplicit.Explicit() {}
#pragma warning disable 8625
public void Do() => MyEvent(default(object), default(EventArgs));
public void Do(float f) {}
public static void DoStatic() {}
public void Explicit2() {}
public void Fun() {}
public void Gen<T>() {}
public void Zoo() {}
public class MyNestedClass {}
public struct MyNestedStruct {}
public class MyNestedGenericClass<T> {}
public struct MyNestedGenericStruct<T> {}
public C this[int i]
{
get => default(C)!;
set {}
}
}
public class D : C, IExplicit, IExplicit2 {
public new int Foo;
public new const int Bar = 30;
int IExplicit2.ExplicitProperty { get; }
public new int Baz { get; set; }
public new event EventHandler MyEvent;
void IExplicit2.Explicit2() {}
public new void Do() => MyEvent(default(object), default(EventArgs));
public void Do(int i) {}
public new static void DoStatic() {}
public void Explicit() {}
public new void Fun() {}
public new void Gen<T>() where T : IComparable {}
public new class MyNestedClass {}
public new struct MyNestedStruct {}
public new class MyNestedGenericClass<T> {}
public new struct MyNestedGenericStruct<T> {}
public new D this[int i]
{
get => default(D)!;
set {}
}
}
public class E : C, IExplicit, IExplicit2 {
public new int Bar;
public new const int Do = 30;
int IExplicit2.ExplicitProperty { get; }
public new int Foo { get; set; }
public new event EventHandler MyNestedClass;
void IExplicit.Explicit() {}
void IExplicit2.Explicit2() {}
public new void Baz() => MyNestedClass(default(object), default(EventArgs));
public new void MyNestedStruct(double d) {}
public new void Zoo() {}
}
public interface IExplicit {
void Explicit();
}
public interface IExplicit2 {
int ExplicitProperty { get; }
void Explicit2();
}
public interface IFun {
void Fun();
}
}
""",
expected: """
namespace A
{
public partial class C : IFun, IExplicit, IExplicit2
{
public const int Bar = 29;
public int Foo;
public int Baz { get { throw null; } }
public int ExplicitProperty { get { throw null; } }
public C this[int i] { get { throw null; } set {} }
public event System.EventHandler MyEvent { add {} remove {} }
void IExplicit.Explicit() {}
public void Do() {}
public void Do(float f) {}
public static void DoStatic() {}
public void Explicit2() {}
public void Fun() {}
public void Gen<T>() {}
public void Zoo() {}
public partial class MyNestedClass {}
public partial class MyNestedGenericClass<T> {}
public partial struct MyNestedGenericStruct<T> {}
public partial struct MyNestedStruct {}
}
public partial class D : C, IExplicit, IExplicit2
{
public new const int Bar = 30;
public new int Foo;
int IExplicit2.ExplicitProperty { get { throw null; } }
public new int Baz { get { throw null; } set {} }
public new D this[int i] { get { throw null; } set {} }
public new event System.EventHandler MyEvent { add {} remove {} }
void IExplicit2.Explicit2() {}
public new void Do() {}
public void Do(int i) {}
public new static void DoStatic() {}
public void Explicit() {}
public new void Fun() {}
public new void Gen<T>() where T : System.IComparable {}
public new partial class MyNestedClass {}
public new partial class MyNestedGenericClass<T> {}
public new partial struct MyNestedGenericStruct<T> {}
public new partial struct MyNestedStruct {}
}
public partial class E : C, IExplicit, IExplicit2
{
public new int Bar;
public new const int Do = 30;
int IExplicit2.ExplicitProperty { get { throw null; } }
public new int Foo { get { throw null; } set {} }
public new event System.EventHandler MyNestedClass { add {} remove {} }
void IExplicit.Explicit() {}
void IExplicit2.Explicit2() {}
public new void Baz() {}
public new void MyNestedStruct(double d) {}
public new void Zoo() {}
}
public partial interface IExplicit {
void Explicit();
}
public partial interface IExplicit2 {
int ExplicitProperty { get; }
void Explicit2();
}
public partial interface IFun {
void Fun();
}
}
""");
}
[Theory]
[InlineData(true)]
[InlineData(false)]
public void TestAttributeWithInternalTypeArgumentOmitted(bool includeInternalSymbols)
{
string expected = includeInternalSymbols ? """
namespace A
{
public partial class AnyTestAttribute : System.Attribute
{
public AnyTestAttribute(System.Type xType) { }
public System.Type XType { get { throw null; } set { } }
}
internal partial class InternalClass
{
}
[AnyTest(typeof(InternalClass))]
[System.Obsolete]
public partial class PublicClass
{
}
}
""" : """
namespace A
{
public partial class AnyTestAttribute : System.Attribute
{
public AnyTestAttribute(System.Type xType) { }
public System.Type XType { get { throw null; } set { } }
}
[System.Obsolete]
public partial class PublicClass
{
}
}
""";
RunTest(original: """
namespace A
{
internal class InternalClass { }
public partial class AnyTestAttribute : System.Attribute
{
public AnyTestAttribute(System.Type xType)
{
XType = xType;
}
public System.Type XType { get; set; }
}
[AnyTest(typeof(InternalClass))]
[System.Obsolete]
public class PublicClass { }
}
""",
expected: expected,
includeInternalSymbols: includeInternalSymbols);
}
[Fact]
public void TestAttributesExcludedWithFilter()
{
using TempDirectory root = new();
string filePath = Path.Combine(root.DirPath, "exclusions.txt");
File.WriteAllText(filePath, "T:A.AnyTestAttribute");
RunTest(original: """
namespace A
{
public partial class AnyTestAttribute : System.Attribute
{
public AnyTestAttribute(System.Type xType)
{
XType = xType;
}
public System.Type XType { get; set; }
}
[AnyTest(typeof(string))]
[System.Obsolete]
public class PublicClass { }
}
""",
expected: """
namespace A
{
public partial class AnyTestAttribute : System.Attribute
{
public AnyTestAttribute(System.Type xType) { }
public System.Type XType { get { throw null; } set { } }
}
[System.Obsolete]
public partial class PublicClass
{
}
}
""",
includeInternalSymbols: false,
excludedAttributeFile: filePath);
}
[Fact]
public void TestGenericClassImplementsGenericInterface()
{
RunTest(original: """
using System;
namespace A
{
public class Foo<T> : System.Collections.ICollection, System.Collections.Generic.ICollection<T>
{
int System.Collections.Generic.ICollection<T>.Count => throw new NotImplementedException();
bool System.Collections.Generic.ICollection<T>.IsReadOnly => throw new NotImplementedException();
int System.Collections.ICollection.Count => throw new NotImplementedException();
bool System.Collections.ICollection.IsSynchronized => throw new NotImplementedException();
object System.Collections.ICollection.SyncRoot => throw new NotImplementedException();
void System.Collections.Generic.ICollection<T>.Add(T item) => throw new NotImplementedException();
void System.Collections.Generic.ICollection<T>.Clear() => throw new NotImplementedException();
bool System.Collections.Generic.ICollection<T>.Contains(T item) => throw new NotImplementedException();
void System.Collections.Generic.ICollection<T>.CopyTo(T[] array, int arrayIndex) => throw new NotImplementedException();
bool System.Collections.Generic.ICollection<T>.Remove(T item) => throw new NotImplementedException();
System.Collections.Generic.IEnumerator<T> System.Collections.Generic.IEnumerable<T>.GetEnumerator() => throw new NotImplementedException();
void System.Collections.ICollection.CopyTo(System.Array array, int index) => throw new NotImplementedException();
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() => throw new NotImplementedException();
}
}
""",
// https://github.com/dotnet/sdk/issues/32195 tracks interface expansion
expected: """
namespace A
{
public partial class Foo<T> : System.Collections.ICollection, System.Collections.IEnumerable, System.Collections.Generic.ICollection<T>, System.Collections.Generic.IEnumerable<T>
{
int System.Collections.Generic.ICollection<T>.Count { get { throw null; } }
bool System.Collections.Generic.ICollection<T>.IsReadOnly { get { throw null; } }
int System.Collections.ICollection.Count { get { throw null; } }
bool System.Collections.ICollection.IsSynchronized { get { throw null; } }
object System.Collections.ICollection.SyncRoot { get { throw null; } }
void System.Collections.Generic.ICollection<T>.Add(T item) { }
void System.Collections.Generic.ICollection<T>.Clear() { }
bool System.Collections.Generic.ICollection<T>.Contains(T item) { throw null; }
void System.Collections.Generic.ICollection<T>.CopyTo(T[] array, int arrayIndex) { }
bool System.Collections.Generic.ICollection<T>.Remove(T item) { throw null; }
System.Collections.Generic.IEnumerator<T> System.Collections.Generic.IEnumerable<T>.GetEnumerator() { throw null; }
void System.Collections.ICollection.CopyTo(System.Array array, int index) { }
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { throw null; }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestTypeForwardsToGenericTypesRegression31250()
{
RunTest(original: """
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,,,>))]
""",
expected: """
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.Action<,,,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,,>))]
[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(System.ValueTuple<,,,,,,,>))]
""",
includeInternalSymbols: false);
}
[Fact]
public void ReservedAttributesAreOmitted()
{
RunTest(original: """
namespace N {
public ref struct C<T>
where T : unmanaged
{
public required (string? k, dynamic v, nint n) X { get; init; }
}
public static class E
{
public static void M<T>(this object c, scoped System.ReadOnlySpan<T> values) { }
}
}
""",
expected: """
namespace N
{
public ref partial struct C<T>
where T : unmanaged
{
public required (string? k, dynamic v, nint n) X { get { throw null; } init { } }
}
public static partial class E
{
public static void M<T>(this object c, scoped System.ReadOnlySpan<T> values) { }
}
}
""");
}
[Fact]
public void TestExplicitInterfaceIndexer()
{
RunTest(original: """
namespace a
{
public interface IFooList
{
object this[int index] { get; set; }
}
public struct Bar : IFooList
{
#pragma warning disable CS8597
public string this[int index] { get { throw null; } set { } }
object IFooList.this[int index] { get { throw null; } set { } }
#pragma warning restore CS8597
}
}
""",
expected: """
namespace a
{
public partial struct Bar : IFooList
{
object IFooList.this[int index] { get { throw null; } set { } }
public string this[int index] { get { throw null; } set { } }
}
public partial interface IFooList
{
object this[int index] { get; set; }
}
}
""",
includeInternalSymbols: false);
}
[Fact]
public void TestExplicitInterfaceNonGenericCollections()
{
RunTest(original: """
using System;
using System.Collections;
namespace a
{
#pragma warning disable CS8597
public partial class MyStringCollection : ICollection, IEnumerable, IList
{
public int Count { get { throw null; } }
public string this[int index] { get { throw null; } set { } }
bool ICollection.IsSynchronized { get { throw null; } }
object ICollection.SyncRoot { get { throw null; } }
bool IList.IsFixedSize { get { throw null; } }
bool IList.IsReadOnly { get { throw null; } }
object? IList.this[int index] { get { throw null; } set { } }
public int Add(string value) { throw null; }
public void AddRange(string[] value) { }
public void AddRange(MyStringCollection value) { }
public void Clear() { }
public bool Contains(string value) { throw null; }
public void CopyTo(string[] array, int index) { }
public override int GetHashCode() { throw null; }
public int IndexOf(string value) { throw null; }
public void Insert(int index, string value) { }
public void Remove(string value) { }
public void RemoveAt(int index) { }
void ICollection.CopyTo(Array array, int index) { }
IEnumerator IEnumerable.GetEnumerator() { throw null; }
int IList.Add(object? value) { throw null; }
bool IList.Contains(object? value) { throw null; }
int IList.IndexOf(object? value) { throw null; }
void IList.Insert(int index, object? value) { }
void IList.Remove(object? value) { }
}
#pragma warning restore CS8597
}
""",
expected: """
namespace a
{
public partial class MyStringCollection : System.Collections.ICollection, System.Collections.IEnumerable, System.Collections.IList
{
public int Count { get { throw null; } }
public string this[int index] { get { throw null; } set { } }
bool System.Collections.ICollection.IsSynchronized { get { throw null; } }
object System.Collections.ICollection.SyncRoot { get { throw null; } }
bool System.Collections.IList.IsFixedSize { get { throw null; } }
bool System.Collections.IList.IsReadOnly { get { throw null; } }
object? System.Collections.IList.this[int index] { get { throw null; } set { } }
public int Add(string value) { throw null; }
public void AddRange(MyStringCollection value) { }
public void AddRange(string[] value) { }
public void Clear() { }
public bool Contains(string value) { throw null; }
public void CopyTo(string[] array, int index) { }
public override int GetHashCode() { throw null; }
public int IndexOf(string value) { throw null; }
public void Insert(int index, string value) { }
public void Remove(string value) { }
public void RemoveAt(int index) { }
void System.Collections.ICollection.CopyTo(System.Array array, int index) { }
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator() { throw null; }
int System.Collections.IList.Add(object? value) { throw null; }
bool System.Collections.IList.Contains(object? value) { throw null; }
int System.Collections.IList.IndexOf(object? value) { throw null; }
void System.Collections.IList.Insert(int index, object? value) { }
void System.Collections.IList.Remove(object? value) { }
}
}
""",
includeInternalSymbols: false);
}
}
}
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