You want to write an integration test that loads the full Spring context but mocks only one bean. How can you achieve this with @SpringBootTest?

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Spring Boot - Testing Spring Boot Applications

You want to write an integration test that loads the full Spring context but mocks only one bean. How can you achieve this with @SpringBootTest?

AUse @SpringBootTest with @MockBean on the bean to mock.

BUse @SpringBootTest and manually create a mock inside the test method.

CUse @SpringBootTest with @Autowired on the mock bean.

DUse @SpringBootTest(webEnvironment = MOCK) to mock all beans.

Step-by-Step Solution

Solution:

Step 1: Understand how to mock beans in integration tests
@MockBean annotation allows replacing a bean in the Spring context with a mock while loading the full context.
Step 2: Evaluate options
Use @SpringBootTest with @MockBean on the bean to mock. correctly combines @SpringBootTest with @MockBean. Use @SpringBootTest and manually create a mock inside the test method. creates a local mock but does not replace the Spring bean. Use @SpringBootTest with @Autowired on the mock bean. misuses @Autowired. Use @SpringBootTest(webEnvironment = MOCK) to mock all beans. is invalid.
Final Answer:
Use @SpringBootTest with @MockBean on the bean to mock. -> Option A
Quick Check:
@MockBean replaces beans in @SpringBootTest context [OK]

Quick Trick: Use @MockBean to mock specific beans in @SpringBootTest [OK]

Common Mistakes:

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