.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
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// Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Collections.Generic;
using System.Linq;
using ICSharpCode.Decompiler.CSharp.OutputVisitor;
using ICSharpCode.Decompiler.Output;
using ICSharpCode.Decompiler.Tests.TypeSystem;
using ICSharpCode.Decompiler.TypeSystem;
using ICSharpCode.Decompiler.TypeSystem.Implementation;
using NUnit.Framework;
using static ICSharpCode.Decompiler.Output.ConversionFlags;
namespace ICSharpCode.Decompiler.Tests.Output
{
[TestFixture]
public class CSharpAmbienceTests
{
ICompilation compilation;
CSharpAmbience ambience;
[OneTimeSetUp]
public void FixtureSetUp()
{
ambience = new CSharpAmbience();
compilation = new SimpleCompilation(TypeSystemLoaderTests.TestAssembly,
TypeSystemLoaderTests.Mscorlib.WithOptions(TypeSystemOptions.Default));
}
ITypeDefinition GetDefinition(Type type)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
var foundType = compilation.FindType(type).GetDefinition();
Assert.That(foundType, Is.Not.Null);
return foundType;
}
const ConversionFlags ILSpyMainTreeViewTypeFlags = ShowTypeParameterList | PlaceReturnTypeAfterParameterList;
const ConversionFlags ILSpyMainTreeViewMemberFlags = ILSpyMainTreeViewTypeFlags | ShowParameterList | ShowReturnType | ShowParameterModifiers;
#region ITypeDefinition tests
[TestCase(None, "Dictionary")]
[TestCase(ShowDefinitionKeyword, "class Dictionary")]
[TestCase(ShowAccessibility, "public Dictionary")]
[TestCase(ShowDefinitionKeyword | ShowAccessibility, "public class Dictionary")]
[TestCase(ShowTypeParameterList, "Dictionary<TKey,TValue>")]
[TestCase(ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "public class Dictionary<TKey,TValue>")]
[TestCase(UseFullyQualifiedEntityNames | ShowTypeParameterList, "System.Collections.Generic.Dictionary<TKey,TValue>")]
[TestCase(UseFullyQualifiedEntityNames | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "public class System.Collections.Generic.Dictionary<TKey,TValue>")]
[TestCase(ILSpyMainTreeViewTypeFlags, "Dictionary<TKey,TValue>")]
public void GenericType(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(Dictionary<,>));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "Object")]
[TestCase(ShowDefinitionKeyword, "class Object")]
[TestCase(ShowAccessibility, "public Object")]
[TestCase(ShowDefinitionKeyword | ShowAccessibility, "public class Object")]
[TestCase(ShowTypeParameterList, "Object")]
[TestCase(ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "public class Object")]
[TestCase(UseFullyQualifiedEntityNames | ShowTypeParameterList, "System.Object")]
[TestCase(All, "public class System.Object")]
[TestCase(ILSpyMainTreeViewTypeFlags, "Object")]
public void SimpleType(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(object));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "IEnumerable")]
[TestCase(ShowTypeParameterList, "IEnumerable<T>")]
[TestCase(ShowTypeParameterList | ShowTypeParameterVarianceModifier, "IEnumerable<out T>")]
[TestCase(All, "public interface System.Collections.Generic.IEnumerable<out T>")]
[TestCase(ILSpyMainTreeViewTypeFlags, "IEnumerable<T>")]
public void GenericInterface(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(IEnumerable<>));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "Enumerator")]
[TestCase(ShowDefinitionKeyword, "struct Enumerator")]
[TestCase(ShowAccessibility, "public Enumerator")]
[TestCase(ShowDefinitionKeyword | ShowAccessibility, "public struct Enumerator")]
[TestCase(ShowTypeParameterList, "Enumerator")]
[TestCase(ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "public struct Enumerator")]
[TestCase(UseFullyQualifiedEntityNames | ShowTypeParameterList, "System.Collections.Generic.List<T>.Enumerator")]
[TestCase(ShowDeclaringType | ShowTypeParameterList, "List<T>.Enumerator")]
[TestCase(All, "public struct System.Collections.Generic.List<T>.Enumerator")]
[TestCase(ILSpyMainTreeViewTypeFlags, "Enumerator")]
public void GenericTypeWithNested(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(List<>.Enumerator));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "StaticClass")]
[TestCase(ShowDefinitionKeyword, "class StaticClass")]
[TestCase(ShowModifiers | ShowDefinitionKeyword, "static class StaticClass")]
[TestCase(ShowModifiers | ShowAccessibility, "private static StaticClass")]
[TestCase(ShowModifiers | ShowDefinitionKeyword | ShowAccessibility, "private static class StaticClass")]
[TestCase(ShowModifiers | ShowTypeParameterList, "static StaticClass")]
[TestCase(ShowModifiers | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "private static class StaticClass")]
[TestCase(All, "private static class ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.StaticClass")]
[TestCase(ILSpyMainTreeViewTypeFlags, "StaticClass")]
public void StaticClassTest(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(StaticClass));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "SealedClass")]
[TestCase(ShowDefinitionKeyword, "class SealedClass")]
[TestCase(ShowModifiers | ShowDefinitionKeyword, "sealed class SealedClass")]
[TestCase(ShowModifiers | ShowAccessibility, "private sealed SealedClass")]
[TestCase(ShowModifiers | ShowDefinitionKeyword | ShowAccessibility, "private sealed class SealedClass")]
[TestCase(ShowModifiers | ShowTypeParameterList, "sealed SealedClass")]
[TestCase(ShowModifiers | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "private sealed class SealedClass")]
[TestCase(All, "private sealed class ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.SealedClass")]
[TestCase(ILSpyMainTreeViewTypeFlags, "SealedClass")]
public void SealedClassTest(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(SealedClass));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "RefStruct")]
[TestCase(ShowDefinitionKeyword, "struct RefStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword, "ref struct RefStruct")]
[TestCase(ShowModifiers | ShowAccessibility, "private ref RefStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword | ShowAccessibility, "private ref struct RefStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList, "ref RefStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "private ref struct RefStruct")]
[TestCase(All, "private ref struct ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.RefStruct")]
[TestCase(ILSpyMainTreeViewTypeFlags, "RefStruct")]
public void RefStructTest(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(RefStruct));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "ReadonlyStruct")]
[TestCase(ShowDefinitionKeyword, "struct ReadonlyStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword, "readonly struct ReadonlyStruct")]
[TestCase(ShowModifiers | ShowAccessibility, "private readonly ReadonlyStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword | ShowAccessibility, "private readonly struct ReadonlyStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList, "readonly ReadonlyStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "private readonly struct ReadonlyStruct")]
[TestCase(All, "private readonly struct ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.ReadonlyStruct")]
[TestCase(ILSpyMainTreeViewTypeFlags, "ReadonlyStruct")]
public void ReadonlyStructTest(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(ReadonlyStruct));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
[TestCase(None, "ReadonlyRefStruct")]
[TestCase(ShowDefinitionKeyword, "struct ReadonlyRefStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword, "readonly ref struct ReadonlyRefStruct")]
[TestCase(ShowModifiers | ShowAccessibility, "private readonly ref ReadonlyRefStruct")]
[TestCase(ShowModifiers | ShowDefinitionKeyword | ShowAccessibility, "private readonly ref struct ReadonlyRefStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList, "readonly ref ReadonlyRefStruct")]
[TestCase(ShowModifiers | ShowTypeParameterList | ShowDefinitionKeyword | ShowAccessibility, "private readonly ref struct ReadonlyRefStruct")]
[TestCase(All, "private readonly ref struct ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.ReadonlyRefStruct")]
[TestCase(ILSpyMainTreeViewTypeFlags, "ReadonlyRefStruct")]
public void ReadonlyRefStructTest(ConversionFlags flags, string expectedOutput)
{
var typeDef = GetDefinition(typeof(ReadonlyRefStruct));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(typeDef), Is.EqualTo(expectedOutput));
}
#endregion
#region Delegate tests
[TestCase(None, "Func")]
[TestCase(ShowTypeParameterList, "Func<T,TResult>")]
[TestCase(ShowTypeParameterList | ShowTypeParameterVarianceModifier, "Func<in T,out TResult>")]
[TestCase(ShowTypeParameterList | ShowReturnType | ShowTypeParameterVarianceModifier, "TResult Func<in T,out TResult>")]
[TestCase(ShowTypeParameterList | ShowParameterList | ShowTypeParameterVarianceModifier, "Func<in T,out TResult>(T)")]
[TestCase(ShowTypeParameterList | ShowParameterList | ShowReturnType | ShowTypeParameterVarianceModifier, "TResult Func<in T,out TResult>(T)")]
[TestCase(All & ~PlaceReturnTypeAfterParameterList, "public delegate TResult System.Func<in T,out TResult>(T arg);")]
[TestCase(All, "public delegate System.Func<in T,out TResult>(T arg) : TResult;")]
[TestCase(ILSpyMainTreeViewTypeFlags, "Func<T,TResult>")]
public void FuncDelegate(ConversionFlags flags, string expectedOutput)
{
var func = GetDefinition(typeof(Func<,>));
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(func), Is.EqualTo(expectedOutput));
}
#endregion
#region IField tests
[TestCase(All & ~PlaceReturnTypeAfterParameterList, "private int ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.Program.test;")]
[TestCase(ILSpyMainTreeViewMemberFlags, "test : int")]
[TestCase(ConversionFlags.All & ~(ConversionFlags.ShowDeclaringType | ConversionFlags.ShowModifiers | ConversionFlags.ShowAccessibility | ConversionFlags.PlaceReturnTypeAfterParameterList), "int test;")]
public void SimpleField(ConversionFlags flags, string expectedOutput)
{
var field = GetDefinition(typeof(CSharpAmbienceTests.Program)).GetFields(f => f.Name == "test").Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(field), Is.EqualTo(expectedOutput));
}
[TestCase(All & ~PlaceReturnTypeAfterParameterList, "private const int ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.Program.TEST2;")]
[TestCase(ILSpyMainTreeViewMemberFlags, "TEST2 : int")]
public void SimpleConstField(ConversionFlags flags, string expectedOutput)
{
var field = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetFields(f => f.Name == "TEST2").Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(field), Is.EqualTo(expectedOutput));
}
#endregion
#region IEvent tests
[Test]
public void EventWithDeclaringType()
{
var ev = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetEvents(f => f.Name == "ProgramChanged").Single();
ambience.ConversionFlags = ConversionFlags.StandardConversionFlags | ConversionFlags.ShowDeclaringType;
string result = ambience.ConvertSymbol(ev);
Assert.That(result, Is.EqualTo("public event EventHandler Program.ProgramChanged;"));
}
[Test]
public void CustomEvent()
{
var ev = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetEvents(f => f.Name == "SomeEvent").Single();
ambience.ConversionFlags = ConversionFlags.StandardConversionFlags;
string result = ambience.ConvertSymbol(ev);
Assert.That(result, Is.EqualTo("public event EventHandler SomeEvent;"));
}
#endregion
#region Property tests
[TestCase(StandardConversionFlags, "public int Test { get; set; }")]
[TestCase(ILSpyMainTreeViewMemberFlags, "Test : int")]
public void AutomaticProperty(ConversionFlags flags, string expectedOutput)
{
var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetProperties(p => p.Name == "Test").Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(prop), Is.EqualTo(expectedOutput));
}
[TestCase(StandardConversionFlags, "public int this[int index] { get; }")]
[TestCase(ILSpyMainTreeViewMemberFlags, "this[int] : int")]
public void Indexer(ConversionFlags flags, string expectedOutput)
{
var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetProperties(p => p.IsIndexer && !p.IsExplicitInterfaceImplementation).Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(prop), Is.EqualTo(expectedOutput));
}
[TestCase(StandardConversionFlags, "int Interface.this[int index] { get; }")]
[TestCase(ILSpyMainTreeViewMemberFlags, "Interface.this[int] : int")]
public void ExplicitIndexer(ConversionFlags flags, string expectedOutput)
{
var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetProperties(p => p.IsIndexer && p.IsExplicitInterfaceImplementation).Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(prop), Is.EqualTo(expectedOutput));
}
#endregion
#region IMethod tests
[TestCase(StandardConversionFlags, "public Program(int x);")]
[TestCase(ILSpyMainTreeViewMemberFlags, "Program(int)")]
public void ConstructorTests(ConversionFlags flags, string expectedOutput)
{
var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetConstructors().Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(prop), Is.EqualTo(expectedOutput));
}
[TestCase(StandardConversionFlags, "~Program();")]
[TestCase(ILSpyMainTreeViewMemberFlags, "~Program()")]
public void DestructorTests(ConversionFlags flags, string expectedOutput)
{
var dtor = compilation.FindType(typeof(CSharpAmbienceTests.Program))
.GetMembers(m => m.SymbolKind == SymbolKind.Destructor, GetMemberOptions.IgnoreInheritedMembers).Single();
ambience.ConversionFlags = flags;
Assert.That(ambience.ConvertSymbol(dtor), Is.EqualTo(expectedOutput));
}
#endregion
#region Test types
#pragma warning disable 169, 67
class Test { }
static class StaticClass { }
sealed class SealedClass { }
ref struct RefStruct { }
readonly struct ReadonlyStruct { }
readonly ref struct ReadonlyRefStruct { }
interface Interface
{
int this[int x] { get; }
}
class Program : Interface
{
int test;
const int TEST2 = 2;
public int Test { get; set; }
public int this[int index] {
get {
return index;
}
}
int Interface.this[int index] {
get {
return index;
}
}
public event EventHandler ProgramChanged;
public event EventHandler SomeEvent {
add { }
remove { }
}
public static bool operator +(Program lhs, Program rhs)
{
throw new NotImplementedException();
}
public static implicit operator Test(Program lhs)
{
throw new NotImplementedException();
}
public static explicit operator int(Program lhs)
{
throw new NotImplementedException();
}
public Program(int x)
{
}
~Program()
{
}
public static void Main(string[] args)
{
Console.WriteLine("Hello World!");
Console.Write("Press any key to continue . . . ");
Console.ReadKey(true);
}
public static void InParameter(in int a)
{
}
}
#endregion
}
}