Spring Boot Testing Spring Applications 4

Question 1

What does the @DirtiesContext annotation signal to the Spring test framework?

Accepted Answer

The Spring application context should be closed and rebuilt after the test

Answer

@DirtiesContext tells the framework that the test modifies the shared Spring context, so it must be discarded and recreated for subsequent tests.

Question 2

Which assertion library, included in spring-boot-starter-test, uses a fluent 'assertThat' API?

Accepted Answer

AssertJ

Answer

AssertJ provides a fluent assertThat() API with rich, readable assertions and is bundled by default with Spring Boot's test starter.

Question 3

When using TestRestTemplate, how do you make a POST request and capture the response body as a custom object?

Accepted Answer

Both B and C are correct

Answer

Both postForObject() and exchange() can deserialize the response body into a custom class; exchange() additionally gives access to headers and status.

Question 4

Which annotation allows you to override specific auto-configuration classes in a Spring Boot test?

Accepted Answer

@SpringBootTest(exclude={...})

Answer

@SpringBootTest(exclude={SomeAutoConfig.class}) prevents the specified auto-configuration classes from being applied during the test.

Question 5

What is the role of @TestConfiguration in Spring Boot tests?

Accepted Answer

Defines additional beans to add or override in the test context

Answer

@TestConfiguration marks a class that provides beans added to or replacing existing beans in the test application context without affecting the production context.

Spring Boot Practice Test

Spring Boot Practice Test

Spring Boot Testing Spring Applications 4