changed TextRunner to accept test file name.

ICSharpCode.Decompiler/Tests/CustomAttributes/S_CustomAttributes.cs

@@ -20,7 +20,7 @@ namespace aa
 		[AttributeUsage(AttributeTargets.All)]
 		public class MyAttribute : Attribute
 		{
-			public MyAttribute(CustomAtributes.EnumWithFlag en)
+			public MyAttribute(CustomAtributes.EnumWithFlag en) : base()
 			{
 			}
 		}

ICSharpCode.Decompiler/Tests/TestRunner.cs

@@ -14,9 +14,12 @@ namespace ICSharpCode.Decompiler.Tests
 {
 	public class TestRunner
 	{
-		public static void Main()
+		public static void Main(string[] args)
 		{
-			TestFile(@"..\..\Tests\DelegateConstruction.cs");
+			if (args.Length == 1)
+				TestFile(args[0]);
+			else
+				TestFile(@"..\..\Tests\DelegateConstruction.cs");
 
 			Console.ReadKey();
 		}
@@ -27,6 +30,7 @@ namespace ICSharpCode.Decompiler.Tests
 			AssemblyDefinition assembly = Compile(code);
 			AstBuilder decompiler = new AstBuilder(new DecompilerContext());
 			decompiler.AddAssembly(assembly);
+			decompiler.Transform(new Helpers.RemoveCompilerAttribute());
 			StringWriter output = new StringWriter();
 			decompiler.GenerateCode(new PlainTextOutput(output));
 			StringWriter diff = new StringWriter();