ILSpy/ICSharpCode.Decompiler.Tests/Output/CSharpAmbienceTests.cs

// 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
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// 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
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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;

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 | TypeSystemOptions.OnlyPublicAPI));
		}

		#region ITypeDefinition tests
		[Test]
		public void GenericType()
		{
			var typeDef = compilation.FindType(typeof(Dictionary<,>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.UseFullyQualifiedEntityNames | ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("System.Collections.Generic.Dictionary<TKey,TValue>", result);
		}

		[Test]
		public void GenericTypeShortName()
		{
			var typeDef = compilation.FindType(typeof(Dictionary<,>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("Dictionary<TKey,TValue>", result);
		}

		[Test]
		public void SimpleType()
		{
			var typeDef = compilation.FindType(typeof(Object)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.UseFullyQualifiedEntityNames | ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("System.Object", result);
		}

		[Test]
		public void SimpleTypeDefinition()
		{
			var typeDef = compilation.FindType(typeof(Object)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.All & ~(ConversionFlags.UseFullyQualifiedEntityNames);
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("public class Object", result);
		}

		[Test]
		public void SimpleTypeDefinitionWithoutModifiers()
		{
			var typeDef = compilation.FindType(typeof(Object)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.All & ~(ConversionFlags.UseFullyQualifiedEntityNames | ConversionFlags.ShowModifiers | ConversionFlags.ShowAccessibility);
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("class Object", result);
		}

		[Test]
		public void GenericTypeDefinitionFull()
		{
			var typeDef = compilation.FindType(typeof(List<>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.All;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("public class System.Collections.Generic.List<T>", result);
		}

		[Test]
		public void GenericInterfaceFull()
		{
			var typeDef = compilation.FindType(typeof(IEnumerable<>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.All;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("public interface System.Collections.Generic.IEnumerable<out T>", result);
		}

		[Test]
		public void SimpleTypeShortName()
		{
			var typeDef = compilation.FindType(typeof(Object)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("Object", result);
		}

		[Test]
		public void GenericTypeWithNested()
		{
			var typeDef = compilation.FindType(typeof(List<>.Enumerator)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.UseFullyQualifiedEntityNames | ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("System.Collections.Generic.List<T>.Enumerator", result);
		}

		[Test]
		public void GenericTypeWithNestedShortName()
		{
			var typeDef = compilation.FindType(typeof(List<>.Enumerator)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.ShowDeclaringType | ConversionFlags.ShowTypeParameterList;
			string result = ambience.ConvertSymbol(typeDef);

			Assert.AreEqual("List<T>.Enumerator", result);
		}
		#endregion

		#region Delegate tests
		[Test]
		public void DelegateName()
		{
			var func = compilation.FindType(typeof(Func<,>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.ShowTypeParameterList;

			Assert.AreEqual("Func<in T,out TResult>", ambience.ConvertSymbol(func));
		}

		[Test]
		public void FullDelegate()
		{
			var func = compilation.FindType(typeof(Func<,>)).GetDefinition();
			ambience.ConversionFlags = ConversionFlags.All;
			Assert.AreEqual("public delegate TResult System.Func<in T,out TResult>(T arg);", ambience.ConvertSymbol(func));
		}
		#endregion

		#region IField tests
		[Test]
		public void SimpleField()
		{
			var field = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetFields(f => f.Name == "test").Single();
			ambience.ConversionFlags = ConversionFlags.All;
			string result = ambience.ConvertSymbol(field);

			Assert.AreEqual("private int ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.Program.test;", result);
		}

		[Test]
		public void SimpleConstField()
		{
			var field = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetFields(f => f.Name == "TEST2").Single();
			ambience.ConversionFlags = ConversionFlags.All;
			string result = ambience.ConvertSymbol(field);

			Assert.AreEqual("private const int ICSharpCode.Decompiler.Tests.Output.CSharpAmbienceTests.Program.TEST2;", result);
		}

		[Test]
		public void SimpleFieldWithoutModifiers()
		{
			var field = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetFields(f => f.Name == "test").Single();
			ambience.ConversionFlags = ConversionFlags.All & ~(ConversionFlags.ShowDeclaringType | ConversionFlags.ShowModifiers | ConversionFlags.ShowAccessibility);
			string result = ambience.ConvertSymbol(field);

			Assert.AreEqual("int test;", result);
		}
		#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.AreEqual("public event EventHandler Program.ProgramChanged;", result);
		}

		[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.AreEqual("public event EventHandler SomeEvent;", result);
		}
		#endregion

		#region Property tests
		[Test]
		public void AutomaticProperty()
		{
			var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetProperties(p => p.Name == "Test").Single();
			ambience.ConversionFlags = ConversionFlags.StandardConversionFlags;
			string result = ambience.ConvertSymbol(prop);

			Assert.AreEqual("public int Test { get; set; }", result);
		}

		[Test]
		public void Indexer()
		{
			var prop = compilation.FindType(typeof(CSharpAmbienceTests.Program)).GetProperties(p => p.IsIndexer).Single();
			ambience.ConversionFlags = ConversionFlags.StandardConversionFlags;
			string result = ambience.ConvertSymbol(prop);

			Assert.AreEqual("public int this[int index] { get; }", result);
		}
		#endregion

		#region Test types
#pragma warning disable 169, 67

		class Test { }

		class Program
		{
			int test;
			const int TEST2 = 2;

			public int Test { get; set; }

			public int 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);
			}
		}
		#endregion
	}
}