Writing the Test method

The complete Test method is shown in the following code:

    @Test 
    public void basicTest() throws Exception { 
      this.mockMvc 
      .perform( 
      get("/welcome") 
      .accept(MediaType.parseMediaType 
      ("application/html;charset=UTF-8"))) 
      .andExpect(status().isOk()) 
      .andExpect( content().contentType 
      ("application/html;charset=UTF-8")) 
      .andExpect(content(). 
       string("Welcome to Spring MVC")); 
    }

A few important things to note are as follows:

• MockMvc mockMvc.perform: This method executes the request and returns an instance of ResultActions that allows chaining calls. In this example, we are chaining the andExpect calls to check expectations.
• get("/welcome").accept(MediaType.parseMediaType("application/html;charset=UTF-8")): This creates an HTTP get request accepting a response with the media type application/html.
• andExpect: This method is used to check expectations. This method will fail the test if the expectation is not met.
• status().isOk(): This uses ResultMatcher to check whether the response status is that of a successful request - 200.
• content().contentType("application/html;charset=UTF-8")): This uses ResultMatcher to check whether the content type of the response is as specified.
• content().string("Welcome to Spring MVC"): This uses ResultMatcher to check whether the response content contains the specified string.