@RequestMapping java.lang.AssertionError: Status Expected :200 Actual :404

Assertion error using @RequestMapping annotation outside of the class

I am getting this error message:

 java.lang.AssertionError: Status 
    Expected :200
    Actual   :404

My Controller is like this

        @Service
        @RestController
        @RequestMapping("/execute/files")
        @ResponseBody
        public class ControllerFiles {
            @Autowired
            @Qualifier("fileRunner")
            ProcessRunnerInterface processRunnerInterfaceFiles;  

            public InputState executeRestFile(@RequestParam String name) throws ExecutionFailedException, URISyntaxException {
               ///code///    
            }
            public List<String>....{
             ///code///
            }
        }

My Test

  @RunWith(SpringJUnit4ClassRunner.class)
    @SpringBootTest
    @AutoConfigureMockMvc
    public class ControllerFilesTest {

        @Autowired
        private MockMvc mockMvc;
        @Autowired
        ControllerFiles controllerFiles;

        @Test
        public void testSpringMvcGetFiles() throws Exception {

            this.mockMvc.perform(get("/execute/files").param("name", "Spring Community Files"))
                    .andDo(print()).andExpect(status().isOk());
        }
}

But when I have my code like this the test work fine!

            @Service
            @RestController
            public class ControllerFiles {
                @Autowired
                @Qualifier("fileRunner")
                ProcessRunnerInterface processRunnerInterfaceFiles;

                @RequestMapping("/execute/files")
                @ResponseBody
                public InputState executeRestFile(@RequestParam String name) throws ExecutionFailedException, URISyntaxException {
                  ///code///        
                }  
               public List<String>....{  
                  ///code/// 
               }
}

Any ideas what is going wrong?