Use mcs for correctness tests.

ICSharpCode.Decompiler.Tests/CorrectnessTestRunner.cs

@@ -46,16 +46,16 @@ namespace ICSharpCode.Decompiler.Tests
 			}
 		}
 
-		static readonly CompilerOptions[] defaultOptions =
+		static readonly CompilerOptions[] noMonoOptions =
 		{
 			CompilerOptions.None,
 			CompilerOptions.Optimize,
 			CompilerOptions.UseRoslyn,
-			CompilerOptions.Optimize | CompilerOptions.UseRoslyn
+			CompilerOptions.Optimize | CompilerOptions.UseRoslyn,
 		};
 
-		static readonly CompilerOptions[] defaultOptionsWithMcs =
-{
+		static readonly CompilerOptions[] defaultOptions =
+		{
 			CompilerOptions.None,
 			CompilerOptions.Optimize,
 			CompilerOptions.UseRoslyn,
@@ -89,7 +89,7 @@ namespace ICSharpCode.Decompiler.Tests
 		}
 
 		[Test]
-		public void HelloWorld([ValueSource("defaultOptionsWithMcs")] CompilerOptions options)
+		public void HelloWorld([ValueSource("defaultOptions")] CompilerOptions options)
 		{
 			RunCS(options: options);
 		}
@@ -115,6 +115,9 @@ namespace ICSharpCode.Decompiler.Tests
 		[Test]
 		public void Switch([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 
@@ -127,6 +130,9 @@ namespace ICSharpCode.Decompiler.Tests
 		[Test]
 		public void Loops([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 
@@ -161,7 +167,7 @@ namespace ICSharpCode.Decompiler.Tests
 		}
 
 		[Test]
-		public void UndocumentedExpressions([ValueSource("defaultOptions")] CompilerOptions options)
+		public void UndocumentedExpressions([ValueSource("noMonoOptions")] CompilerOptions options)
 		{
 			RunCS(options: options);
 		}
@@ -223,6 +229,9 @@ namespace ICSharpCode.Decompiler.Tests
 		[Test]
 		public void UnsafeCode([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 
@@ -247,6 +256,9 @@ namespace ICSharpCode.Decompiler.Tests
 		[Test]
 		public void YieldReturn([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 
@@ -259,12 +271,18 @@ namespace ICSharpCode.Decompiler.Tests
 		[Test]
 		public void LINQRaytracer([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 
 		[Test]
 		public void MiniJSON([ValueSource("defaultOptions")] CompilerOptions options)
 		{
+			if (options.HasFlag(CompilerOptions.UseMcs)) {
+				Assert.Ignore("Decompiler bug with mono!");
+			}
 			RunCS(options: options);
 		}
 

ICSharpCode.Decompiler.Tests/Helpers/Tester.cs

@@ -172,12 +172,15 @@ namespace ICSharpCode.Decompiler.Tests.Helpers
 			}
 			if (flags.HasFlag(CompilerOptions.UseRoslyn)) {
 				preprocessorSymbols.Add("ROSLYN");
+				preprocessorSymbols.Add("CS60");
+				preprocessorSymbols.Add("CS70");
+				preprocessorSymbols.Add("CS71");
+				preprocessorSymbols.Add("CS72");
+			} else if (flags.HasFlag(CompilerOptions.UseMcs)) {
+				preprocessorSymbols.Add("MCS");
 			} else {
 				preprocessorSymbols.Add("LEGACY_CSC");
 			}
-			if (flags.HasFlag(CompilerOptions.UseMcs)) {
-				preprocessorSymbols.Add("MONO_MCS");
-			}
 			return preprocessorSymbols;
 		}
 
@@ -239,6 +242,9 @@ namespace ICSharpCode.Decompiler.Tests.Helpers
 				} else {
 					otherOptions += "-platform:anycpu ";
 				}
+				if (preprocessorSymbols.Count > 0) {
+					otherOptions += " \"-d:" + string.Join(";", preprocessorSymbols) + "\" ";
+				}
 
 				ProcessStartInfo info = new ProcessStartInfo(mcsPath);
 				info.Arguments = $"{otherOptions}-out:\"{Path.GetFullPath(results.PathToAssembly)}\" {string.Join(" ", sourceFileNames.Select(fn => '"' + Path.GetFullPath(fn) + '"'))}";
@@ -246,6 +252,8 @@ namespace ICSharpCode.Decompiler.Tests.Helpers
 				info.RedirectStandardOutput = true;
 				info.UseShellExecute = false;
 
+				Console.WriteLine($"\"{info.FileName}\" {info.Arguments}");
+
 				Process process = Process.Start(info);
 
 				var outputTask = process.StandardOutput.ReadToEndAsync();

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -31,6 +31,10 @@
     <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DefineConstants>TRACE;DEBUG;NET46;ROSLYN;CS60;CS70</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="DiffLib" Version="1.0.0.55" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.6.0" />

ICSharpCode.Decompiler.Tests/TestCases/Correctness/Async.cs

@@ -21,7 +21,6 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using System.Runtime.CompilerServices;
 using System.Threading.Tasks;
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
@@ -40,14 +39,14 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 			StreamCopyToWithConfigureAwait(new MemoryStream(new byte[1024]), 16);
 			await AwaitInForEach(Enumerable.Range(0, 100).Select(i => Task.FromResult(i)));
 			await TaskMethodWithoutAwaitButWithExceptionHandling();
-#if !LEGACY_CSC
+#if CS60
 			await AwaitCatch(Task.FromResult(1));
 			await AwaitFinally(Task.FromResult(2));
 #endif
 			await NestedAwait(Task.FromResult(Task.FromResult(5)));
 			await AwaitWithStack(Task.FromResult(3));
 			await AwaitWithStack2(Task.FromResult(4));
-#if !LEGACY_CSC
+#if CS60
 			await AwaitInCatch(Task.FromResult(1), Task.FromResult(2));
 			await AwaitInFinally(Task.FromResult(2), Task.FromResult(4));
 #endif
@@ -113,7 +112,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 			}
 		}
 
-#if !LEGACY_CSC
+#if CS60
 		public async Task AwaitCatch(Task<int> task)
 		{
 			try {
@@ -155,7 +154,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 			}
 		}
 
-#if !LEGACY_CSC
+#if CS60
 		public async Task AwaitInCatch(Task<int> task1, Task<int> task2)
 		{
 			try {

ICSharpCode.Decompiler.Tests/TestCases/Correctness/Capturing.cs

@@ -1,8 +1,5 @@
 using System;
 using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 {

ICSharpCode.Decompiler.Tests/TestCases/Correctness/CompoundAssignment.cs

@@ -136,7 +136,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 
 		static void UnsignedShiftRightInstanceField()
 		{
-#if !LEGACY_CSC
+#if CS70
 			ref int f = ref new CompoundAssignment().instanceField;
 			Test(X(), f = (int)((uint)f >> 2));
 #endif

ICSharpCode.Decompiler.Tests/TestCases/Correctness/ExpressionTrees.cs

@@ -1,9 +1,23 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
+// Copyright (c) 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.Linq.Expressions;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 {

ICSharpCode.Decompiler.Tests/TestCases/Correctness/InitializerTests.cs

@@ -609,7 +609,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 			return "Test";
 		}
 
-#if !LEGACY_CSC
+#if CS60
 		public static void SimpleDictInitializer()
 		{
 			InitializerTests.X(InitializerTests.Y(), new InitializerTests.Data {

ICSharpCode.Decompiler.Tests/TestCases/Correctness/Loops.cs

@@ -19,10 +19,6 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
-using System.Linq;
-using System.Runtime.InteropServices;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 {

ICSharpCode.Decompiler.Tests/TestCases/Correctness/OverloadResolution.cs

@@ -17,10 +17,6 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 {
@@ -74,13 +70,13 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 		#region params with nulls
 		static void TestParamsMethod()
 		{
-			TestCall(1, null, (TypeAccessException)null);
+			TestCall(1, null, (NullReferenceException)null);
 			TestCall(2, null, (AccessViolationException)null);
 			TestCall(3, null);
 			TestCall(3, null, null, null);
 		}
 
-		static void TestCall(int v, Type p1, TypeAccessException p2)
+		static void TestCall(int v, Type p1, NullReferenceException p2)
 		{
 			Console.WriteLine("TestCall without params");
 		}

ICSharpCode.Decompiler.Tests/TestCases/Correctness/Using.cs

@@ -55,9 +55,12 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Correctness
 		public static void SimpleUsingNullStatement()
 		{
 			Console.WriteLine("before using");
+			// Mono has a compiler bug and introduces an assembly reference to [gmcs] here...
+#if !MCS
 			using (null) {
 				Console.WriteLine("using (null)");
 			}
+#endif
 			Console.WriteLine("after using");
 		}
 

ICSharpCode.Decompiler.Tests/TestCases/Pretty/ExceptionHandling.cs

@@ -17,7 +17,7 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
-#if !LEGACY_CSC
+#if CS60
 using System.IO;
 #endif
 using System.Threading;
@@ -64,7 +64,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 			return false;
 		}
 
-#if !LEGACY_CSC
+#if CS60
 		public bool SimpleTryCatchExceptionWithNameAndCondition()
 		{
 			try {

ICSharpCode.Decompiler.Tests/TestCases/Pretty/InitializerTests.cs

@@ -349,7 +349,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 
 		}
 
-#if !LEGACY_CSC
+#if CS60
 		public static void SimpleDictInitializer()
 		{
 			InitializerTests.X(InitializerTests.Y(), new Data {

ICSharpCode.Decompiler.Tests/TestCases/Pretty/Using.cs

@@ -40,6 +40,7 @@ namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
 		}
 
 #if LEGACY_CSC
+		// roslyn optimizes out the try-finally; mcs has a compiler bug on using(null-literal)
 		public void SimpleUsingNullStatement()
 		{
 			using (null) {

ILSpy-tests

@@ -1 +1 @@
-Subproject commit 2c480d5f589e3f2acb96cd3efa67f608af25a05c
+Subproject commit 4ed2643065a15d4440971fe2a5409cdeba6aaeac