public void TestBoxExtensionIronRuby()
        {
            NovaClass strb      = global::Nova.Nova.Box(typeof(StringBuilder));
            var       engine    = GetRuntime().GetEngine("Nova");
            var       defsource =
                engine.CreateScriptSourceFromString(
                    "def AppendFromNova() { self.Append('Appending from Nova extension method!'); };");
            var defscope = engine.CreateScope();

            defsource.Execute(defscope);
            NovaClass.AddMethod(strb.InstanceMethods, defscope.GetVariable("AppendFromNova"));

            var scope = engine.CreateScope();

            scope.SetVariable("StringBuilder", strb);
            var str        = new StringBuilder("Hello world! ");
            var strx       = global::Nova.Nova.Box(str, new NovaScope(scope));
            var rubyengine = GetRuntime().GetEngine("IronRuby");
            var rubysource =
                rubyengine.CreateScriptSourceFromString("strx.AppendFromNova(); strx.ToString();");

            var rubyscope = rubyengine.CreateScope();

            rubyscope.SetVariable("strx", strx);
            Assert.That((string)rubysource.Execute(rubyscope),
                        Is.EqualTo("Hello world! Appending from Nova extension method!"));
        }
        public void TestCSharpClassExtend()
        {
            NovaClass strb      = global::Nova.Nova.Box(typeof(StringBuilder));
            var       engine    = GetRuntime().GetEngine("Nova");
            var       defsource =
                engine.CreateScriptSourceFromString(
                    "def AppendFromNova() { self.Append('Appending from Nova extension method!'); };");
            var defscope = engine.CreateScope();

            defsource.Execute(defscope);
            NovaClass.AddMethod(strb.InstanceMethods, defscope.GetVariable("AppendFromNova"));

            var source =
                engine.CreateScriptSourceFromString(
                    "str.AppendFormat('{0} world! ','hello'); str.AppendFromNova(); str.ToString();");

            var scope = engine.CreateScope();

            scope.SetVariable("str", new StringBuilder());
            scope.SetVariable("StringBuilder", strb);
            Assert.That(source.Execute(scope),
                        Is.EqualTo("hello world! Appending from Nova extension method!"));
        }