[开发测试]单元测试注解说明

• If you are using Junit version < 5, so you have to use @RunWith(SpringRunner.class) or @RunWith(MockitoJUnitRunner.class) etc.
• If you are using Junit version = 5, so you have to use @ExtendWith(SpringExtension.class) or @ExtendWith(MockitoExtension.class) etc.

@SpringBootTest

The @SpringBootTest annotation can be used when we need to bootstrap the entire container. The annotation works by creating the ApplicationContext that will be utilized in our tests

@RunWith(SpringRunner.class) && @ExtendWith(SpringExtension.class)

1. @RunWith(SpringRunner.class) works with Junit4
2. @ExtendWith(SpringExtension.class) works with Junit5
3. You need this annotation to just enable Spring Boot features like @Autowired,@MockBean etc… during junit testing