2022
Udemy - Learn integration testing with Spring Boot
    https://www.udemy.com/course/learn-integration-testing-with-spring-boot/
    magnet:?xt=urn:btih:1bf94df2619b72ca60de8e2223202b6d2576a510
    ! 363.5m
Advanced Spring - Effective Integration Testing with Spring Boot
    magnet:?xt=urn:btih:afd24823c218c0cc876504cb86723cfc44b9ab29
    ! 201.5m, non-complete

https://www.linkedin.com/learning/spring-boot-test-driven-development
    AopTestUtils
    ReflectionTestUtils
    MvcTestUtils, Mvc test client, MockMvc

    Unit Test
    @ExtendsWith(MockitoExtension.class)
    Integration
    @SpringBootTest(classes=MyConfig.class)
    @AutoConfigureTestDatabase(replace=Replace.ANY)
    @AutoConfigureMockMvc
        @Autowired
        MockMvc mockMvc;
        someTestMethod() {
            mockMvc.perform(get("/someEndpoint"))
              .andExpect(status().isOk())
              .andExpect(content().string(containsString("some-uuid")))
        }

https://www.linkedin.com/learning/advanced-spring-effective-integration-testing-with-spring-boot
    @SpringBootTest
    @DataJpaTest (without web layer), @DataJdbcTest, ... @DataRedisTest
    @WebMvcTest (loads web-layer only to the context without persistence layer), @RestClientTest, @WebServiceClientTest, @WebFluxTest
    @MockBean ? for UT
    BDDMockito lib
        instead of when(methodCall).then(doSomething)
        given(methodCall).will(doSomething)

    TestEntityManager mgr
    mgr.persistFlushFind(obj) -> to bypass hbm L1 cache

    @ExtendsWith(MockitoExtension.class)
    @InjectMock - uses constructor or setter injection
    @Mock - replaces whole class entirely
    @Spy - takes existing object and replaces only some methods
    @MockBean and @SpyBean

    @ExceptionHandler+@ResponseStatus()
    or @ResponseStatus(HttpStatus.NOT_FOUND)
    public void someMethod(SomeEx-n)
    mockito given().willThrow(...)

    @RestClientTest (MockRestServiceServer, only for RestTemplate)
    WireMock is better

    SpringCloudContract (generate tests by contract def-n), 
        StubRunner fetches generated jar and spins stub-server at config-d port
        @SpringBootTest
        @AutoConfigureStubRunner(ids="group:artifact:+:8080", stubsMode=StubRunnerProperties.StubsMode.LOCAL)