Mock MVC - Add Request Parameter to test

Question

I am using spring 3.2 mock mvc to test my controller.My code is ``` @Autowired private Client client; @RequestMapping(value = "/user", method = RequestMethod.GET) public String initUserSearchForm(ModelMap modelMap) { User user = new User(); modelMap.addAttribute("User", user); return "user"; } @RequestMapping(value = "/byName", method = RequestMethod.GET) @ResponseStatus(HttpStatus.OK) public @ResponseBody String getUserByName( @RequestParam("firstName") String firstName, @RequestParam("lastName") String lastName, @ModelAttribute("userClientObject") UserClient userClient) { return client.getUserByName(userClient, firstName, lastName); } ``` and I wrote following test: ``` @Test public void testGetUserByName() throws Exception { String firstName = "Jack"; String lastName = "s"; this.userClientObject = client.createClient(); mockMvc.perform(get("/byName") .sessionAttr("userClientObject", this.userClientObject) .param("firstName", firstName) .param("lastName", lastName) ).andExpect(statu…

Accepted Answer

When i analyzed your code. I have also faced the same problem but my problem is if i give value for both first and last name means it is working fine. but when i give only one value means it says 400. anyway use the .andDo(print()) method to find out the error

```
public void testGetUserByName() throws Exception {
    String firstName = "Jack";
    String lastName = "s";       
    this.userClientObject = client.createClient();
    mockMvc.perform(get("/byName")
            .sessionAttr("userClientObject", this.userClientObject)
            .param("firstName", firstName)
            .param("lastName", lastName)               
    ).andDo(print())
     .andExpect(status().isOk())
            .andExpect(content().contentType("application/json"))
            .andExpect(jsonPath("$[0].id").exists())
            .andExpect(jsonPath("$[0].fn").value("Marge"));
}
```

If your problem is `org.springframework.web.bind.missingservletrequestparameterexception` you have to change your code to

```
@RequestMapping(value = "/byName", method = RequestMethod.GET)
    @ResponseStatus(HttpStatus.OK)
    public
    @ResponseBody
    String getUserByName(
        @RequestParam( value="firstName",required = false) String firstName,
        @RequestParam(value="lastName",required = false) String lastName, 
        @ModelAttribute("userClientObject") UserClient userClient)
    {

return client.getUserByName(userClient, firstName, lastName);
    }
```

Mock MVC - Add Request Parameter to test

Solution

Problem