[Tests] Allow to ignore tests that fail on the interpreter. (xamarin#…

…6802)

There are some failures that only happen in the interpreter. We add a
TestRuntime method that allow to check if the interpreter is used.

tests/EmbeddedResources/EmbeddedResources.csproj

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -37,12 +37,16 @@
   <ItemGroup>
     <Reference Include="Xamarin.iOS" />
     <Reference Include="MonoTouch.NUnitLite" />
+    <Reference Include="System.Core" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Resources\" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="ResourcesTest.cs" />
+    <Compile Include="..\common\TestRuntime.cs">
+      <Link>TestRuntime.cs</Link>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Welcome.resx">
@@ -59,4 +63,4 @@
     </EmbeddedResource>
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
-</Project>
+</Project>

tests/EmbeddedResources/ResourcesTest.cs

@@ -11,6 +11,8 @@
 using System.IO;
 using System.Resources;
 using System.Globalization;
+using System.Reflection;
+using System.Reflection.Emit;
 using NUnit.Framework;
 
 #if XAMCORE_2_0
@@ -30,8 +32,11 @@ public class ResourcesTest {
 		[Test]
 		public void Embedded ()
 		{
+
 #if __TVOS__
-			Assert.Ignore ("This test is disabled on TVOS."); // Randomly crashed on tvOS -> https://github.com/xamarin/maccore/issues/1909
+			if (TestRuntime.CheckExecutingWithInterpreter ())
+				Assert.Ignore ("This test is disabled on TVOS."); // Randomly crashed on tvOS -> https://github.com/xamarin/maccore/issues/1909
+
 #endif
 
 #if MONOMAC

tests/common/TestRuntime.cs

@@ -9,6 +9,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.InteropServices;
+using System.Reflection.Emit;
 
 #if XAMCORE_2_0
 using AVFoundation;
@@ -111,6 +112,20 @@ public static void IgnoreInCI (string message)
 		NUnit.Framework.Assert.Ignore (message);
 	}
 
+	public static bool CheckExecutingWithInterpreter ()
+	{
+		// until System.Runtime.CompilerServices.RuntimeFeature.IsSupported("IsDynamicCodeCompiled") returns a valid result, atm it
+		// always return true, try to build an object of a class that should fail without introspection, and catch the exception to do the
+		// right thing
+		try {
+			AssemblyBuilder ab = AppDomain.CurrentDomain.DefineDynamicAssembly (null, AssemblyBuilderAccess.RunAndSave);
+			return true;
+		} catch (PlatformNotSupportedException) {
+			// we do not have the interpreter, lets continue
+			return false;
+		}
+	}
+
 	public static void AssertXcodeVersion (int major, int minor, int build = 0)
 	{
 		if (CheckXcodeVersion (major, minor, build))