public void testExecute() throws IOException {
HttpServletRequest request = createMock(HttpServletRequest.class);
HttpServletResponse response = createMock(HttpServletResponse.class);
Context velocityContext = createMock(Context.class);
TilesContainer container = createMock(TilesContainer.class);
InternalContextAdapter internalContextAdapter = createMock(InternalContextAdapter.class);
Writer writer = new StringWriter();
attribute = new Attribute("myAttributeValue");
Map<String, Object> params = createParams();
expect(request.getAttribute(ServletUtil.CURRENT_CONTAINER_ATTRIBUTE_NAME)).andReturn(container);