How can we remove unnecessary `AutoConfigureEmbeddedDatabase` from spring tests and load only essential context for the test?

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There are a few ways to remove unnecessary AutoConfigureEmbeddedDatabase from Spring tests and load only the essential context for the test:

1. Use the @ContextConfiguration annotation to specify which configuration classes or XML files to load for the test. This allows you to explicitly load only the necessary beans and avoid unnecessary auto-configuration:

@RunWith(SpringRunner.class)
@ContextConfiguration(classes = {TestConfig.class, ServiceUnderTest.class})
public class MyTest {

    @Autowired
    private ServiceUnderTest service;

    // ...
}

1. If you are using Spring Boot, you can use the @SpringBootTest annotation with the classes attribute to specify which configuration classes to load. This approach loads the entire application context, but only with the necessary configuration classes:

@RunWith(SpringRunner.class)
@SpringBootTest(classes = TestConfig.class)
public class MyTest {

    @Autowired
    private ServiceUnderTest service;

    // ...
}

1. If you only need to test a specific component, you can use the @WebMvcTest or @DataJpaTest annotations, which load only the necessary parts of the application context for testing specific components:

@RunWith(SpringRunner.class)
@WebMvcTest(MyController.class)
public class MyControllerTest {

    @Autowired
    private MockMvc mockMvc;

    // ...
}

Overall, the key is to be intentional and explicit about what parts of the application context you are loading for each test, rather than relying on auto-configuration defaults. This will help you minimize test setup time and avoid potential conflicts or inconsistencies caused by unnecessary beans.