Let us test some existing controllers in ch03 by performing the following steps:

1. Create another test class inside org.packt.dissect.mvc.test without loading WebApplicationContext and configure MockMvc to test only SimpleController of this project:

        import static org.springframework.test.web.servlet.request.
        MockMvcRequestBuilders.get; 
        import static org.springframework.test.web.servlet.request.
        MockMvcRequestBuilders.post; 
        import static    org.springframework.test.web.servlet.result.
        MockMvcResultHandlers.print; 
        import static org.springframework.test.web.servlet.result.
        MockMvcResultMatchers.status; 
        import static org.springframework.test.web.servlet.result.
        MockMvcResultMatchers.view; 
        @RunWith(MockitoJUnitRunner.class) 
        public class TestControllerConfiguration { 
    
           private MockMvc mockMvc; 
    
           @Before  
        public void setUp() { 
                this.mockMvc = MockMvcBuilders.standaloneSetup(new  
                SimpleController()).build(); 
        } 
        } 

2. Add some test cases on the controller's GET and POST request handlers:

        @Test 
           public void testGetPage() throws Exception { 
               mockMvc.perform(get("/simple.html")).andDo(print()) 
               .andExpect(status().isOk())  
               .andExpect(view().name("get"));      
           } 
    
       @Test 
          public void testPostPage() throws Exception { 
                mockMvc.perform(post("/simple.html")) 
                .andExpect(view().name("post"))  
                .andDo(print()) 
                .andExpect(status().isOk()); 
          } 

3. Add another test case that will test a non-existent component or a handler request that is not found inside SimpleController.

@Test 
   public void testOtherRequest() throws Exception { 
      mockMvc.perform(get("/login.html")).andDo(print())    
           .andExpect(view().name("login")); 
} 

4. Run the test method and observe what happens.