Add some failing unit tests (issues icsharpcode#118 and icsharpcode#188)

ICSharpCode.NRefactory.ConsistencyCheck/PatternMatchingTest.cs

@@ -54,6 +54,8 @@ public static void RunTest(CSharpFile file)
 			}
 			// Mutate primitive values:
 			foreach (var pe in copy.Descendants.OfType<PrimitiveExpression>()) {
+				if (pe.Ancestors.Any(a => a is PreProcessorDirective))
+					continue;
 				object oldVal = pe.Value;
 				pe.Value = "Mutated " + "Value";
 				if (copy.IsMatch(file.SyntaxTree))

ICSharpCode.NRefactory.Tests/CSharp/CSharpOutputVisitorTests.cs

@@ -182,5 +182,14 @@ class C {}
 			options.BlankLinesAfterUsings = 2;
 			AssertOutput("using System;\nusing System.Collections;\nusing List = System.Collections.List;\n\n\nnamespace NS\n{\n$using System.Collections.Generic;\n$using Collection = System.Collections.Collection;\n$using System.Xml;\n\n\n$class C\n${\n$}\n}\n", unit, options);
 		}
+
+		[Test, Ignore("#pragma warning not implemented in output visitor - issue #188")]
+		public void PragmaWarning()
+		{
+			var code = @"#pragma warning disable 414";
+			var unit = SyntaxTree.Parse(code);
+			var options = FormattingOptionsFactory.CreateMono();
+			AssertOutput("#pragma warning disable 414\n", unit, options);
+		}
 	}
 }

ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/RedundantCastIssueTests.cs

@@ -301,6 +301,22 @@ void Bar ()
 		float f = 5.6f;
 		Console.WriteLine (""foo {0}"", (int)f);
 	}
+}");
+		}
+
+		[Test, Ignore("https://github.com/icsharpcode/NRefactory/issues/118")]
+		public void TestNonRedundantCastDueToOverloading ()
+		{
+			TestWrongContext<RedundantCastIssue> (@"
+class Foo
+{
+	void F(string a) {}
+	void F(object a) {}
+
+	void Bar ()
+	{	
+		F((object)string.Empty);
+	}
 }");
 		}
 	}