Testing Annotations in Spring Boot
@SpringBootTest:
- Indicates that the annotated class is the Spring Boot test.
- The Loads the complete application context.
@SpringBootTest
public class MySpringBootTest {
// Test methods go here
}
@RunWith(SpringRunner.class):
- The Specifies the class to run the tests.
- The SpringRunner is the alias for SpringJUnit4ClassRunner.
@RunWith(SpringRunner.class)
@SpringBootTest
public class MySpringBootTest {
// Test methods go here
}
@MockBean:
- The Mocks a Spring Bean for testing purposes.
- Useful for the isolating the unit of the code being tested.
@SpringBootTest
public class MyServiceTest {
@Autowired
private MyService myService;
@MockBean
private ExternalService externalService;
// Test methods go here
}
@Test:
- The Denotes a test method.
- Executed when running the test class.
@Test
public void myUnitTest() {
// Test logic goes here
}
Testing in Spring Boot
In this article, we will be discussing Testing in Spring Boot. There are so many different testing approaches in Spring Boot used for deploying the application server. Testing in Spring Boot is an important feature of software development which ensures that your application behaves as per the requirement and meets all the testing criteria. Spring Boot provides a robust testing framework that supports Unit Testing, Integration Testing, and End-to-End Testing.
1. Unit Tests:
- The Focus is on testing individual components or units of the code in isolation.
- Use tools like JUnit and Mockito for the writing unit tests.
2. Integration Tests:
- Test the interactions between the multiple components or modules.
- Ensures that different parts of the application work together perfectly.
- Typically involves testing repositories, services, and controllers.
3. End-to-End (E2E) Tests:
- Test the entire application from the end to end simulating real user scenarios.
- Involve testing application’s behavior through its external interfaces.
- Use tools like Selenium for the web applications.
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