When we write a spring rest controller we give version url and start writing different functions as endpoints like below
@RestController
@RequestMapping("/api/v1")
public class ControllerApi {
final LoginSender loginSender;
public ControllerApi(LoginSender loginSender) {
this.loginSender = loginSender;
}
@PostMapping("/login")
boolean login(@RequestBody LoginParams params) {
return loginSender.login(params.server(), params.login(), params.password(), params.build(), params.webManager());
}
@GetMapping("/get1")
LoginParams get1(@RequestParam String login, @RequestParam(required = false) String webMan,
@RequestParam(required = false) String server, @RequestParam(required = false) String pass,
@RequestParam(required = false) String build) {
return LoginParams.builder()
.webManager(webMan)
.server(server)
.password(pass)
.login(login)
.build(build)
.build();
}
}
ib the future this controller will have different version number from v1 to v2 or in the future someone will change login endpoint from “/login” to “/loginJwt” but function order probably will not change. So in order to prevent your tests to fail we can collect these data from controller class like the code below.
@BeforeEach
void beforeEach() throws NoSuchMethodException {
RequestMapping requestMapping = ControllerApi.class.getAnnotation(RequestMapping.class);
Method[] methods = ControllerApi.class.getDeclaredMethods();
loginUrl = methods[0].getAnnotation(PostMapping.class).value()[0];
get1Url = methods[1].getAnnotation(GetMapping.class).value()[0];
apiVersion = requestMapping.value()[0];
}
@Test
void login() throws Exception {
when(loginSender.login(any(), any(), any(), any(), any())).thenReturn(true);
String mvcResult = mockMvc.perform(post(apiVersion + loginUrl)
.content(mapper.writeValueAsString(LoginParams.builder().build()))
.contentType(MediaType.APPLICATION_JSON))
.andExpect(status().isOk())
.andReturn().getResponse().getContentAsString();
Assertions.assertEquals("true", mvcResult);
}
One way to write more independent tests. You can see running code here
or another way to get the methods by name, like below
loginUrl = Arrays.stream(methods)
.filter(f->f.getName().toLowerCase().contains("login"))
.findFirst()
.get()
.getAnnotation(PostMapping.class).value()[0];
get1Url = Arrays.stream(methods)
.filter(f->f.getName().toLowerCase().contains("get1"))
.findFirst()
.get()
.getAnnotation(GetMapping.class).value()[0];
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