Spring test 1.4 example

sprint-test-example.java

@RunWith(SpringRunner.class)
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT/*, classes = Application.class*/)
//@DataJpaTest //Starts with in-memory database, without a web tier, only data tier
//@RestClientTest({RemoteVehicleDetailsService.class}) //Use with REST client class
//@TestPropertySource(properties = "vehicle.service.root-url=http://example.com") 
//@JsonTest //Testing JSON (de)serialization
//@AutoConfigureTestDatabase //self-explanatory
//@WebMvcTest(UserVehicleController.class) //MVC class
public class ApplicationIntegrationTest {

	// @Value("${local.server.port}")
	// private int port;

	@LocalServerPort
	private int port;

	@Rule
	public ExpectedException thrown = ExpectedException.none();


	//Autowired TestRestTemplates can figure the local port out and use relative addresses
	@Autowired
	private TestRestTemplate restTemplate = new TestRestTemplate();

	@Autowired
	private MockMvc mvc; //Used for testing MVC applications. MockMvc does not boot up a complete server

	@Autowired
	private TestEntityManager testEntityManger; //alternative test-oriented entity manager

	@Autowired
	private MockRestServiceServer server; //REST client support, mock interactions with server

	@Autowired
	private JacksonTester<VehicleDetails> json;

	@MockBean //Replaces current bean in context, from Mockito
	private VehicleDetailsService VehicleDetailsService;

	@Test
	public void test() {
		ResponseEntity<String> response = this.restTemplate
			.getForEntity("/{username}/vehicle", String.class, "mickey");
		assertThat(response.getBody(), containsString("Honda"));
	}

	@Test
	public void testWithException() {
		this.thrown.expect(IllegalArgumentException.class);
		ResponseEntity<String> response = this.restTemplate
			.getForEntity("/{username}/vehicle", String.class, "mickey");
		assertThat(response.getBody(), containsString("Honda"));
	}

	@Test
	public void testWithPersisting() {
		this.testEntityManger.persist(new User("donald", "123456789"));
		User user = this.repository.findByUsername("minnie");
		assertThat(user).isNull();
	}

	@Test
	public void testRestClient()
	{
		this.server.expect(requestTo("http://example.com/vehicle" + VIN + "/details"))
			.andRespond(withSuccess(getClassPathResource("file.json")));
			//execute call
	}

	@Test
	public void serializeJson() 
	{
		//Uses AssertJ
		VehicleDetails details = new VehicleDetails("Honda", "Civic");
		assertthat(this.json.write(details)).isEqualTo("vehicledetails.json"); //loads file from same package
		assertthat(this.json.write(details)).hasJsonPathStringValue("@.make").isEqualTo("Honda"); //loads file from same package
	}

}