// Execute
        corsHandlerFactory.add(origin1, handler1);
        corsHandlerFactory.add(origin2, handler2);
        corsHandlerFactory.add(origin3, handler3);

        // Verify
        assertEquals(handler1, corsHandlerFactory.get(origin1));
        assertEquals(handler2, corsHandlerFactory.get(origin2));
        assertEquals(handler3, corsHandlerFactory.get(origin3));
    }

    private CorsFilter corsFilter;
    private TestCorsHandlerFactory corsHandlerFactory;
    private TestHttpServletRequest mockRequest;
    private TestHttpServletResponse mockResponse;
    private TestFilterChain mockFilterChain;

    @Override
    public void setUp() throws Exception {
        super.setUp();
        corsFilter = new CorsFilter();
        corsHandlerFactory = new TestCorsHandlerFactory();
        // Initialize mocks