public void Should_decorate_test_method() { var testMethodDecoratorMock = CreateTestMethodDecoratorMock(); container.RegisterInstanceAs(testMethodDecoratorMock.Object, "foo"); var registry = CreateDecoratorRegistry(); List <string> unprocessedTags; registry.DecorateTestMethod(CreateGenerationContext("dummy"), null, ParserHelper.GetTags("dummy"), out unprocessedTags); testMethodDecoratorMock.Verify(d => d.DecorateFrom(It.IsAny <TestClassGenerationContext>(), It.IsAny <CodeMemberMethod>())); }