In Spring Boot, how can you isolate the Data Layer while performing unit tests on Service Layer components?
- Use the @DataJpaTest annotation.
- Use the @ExtendWith(SpringExtension.class) annotation.
- Use the @SpringBootTest annotation with a custom configuration file.
- Use the @WebMvcTest annotation.
To isolate the Data Layer while performing unit tests on Service Layer components in Spring Boot, you should use the @DataJpaTest annotation. This annotation is designed for testing JPA repositories and automatically configures a test slice of the application context limited to the data layer.
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