Spring Framework Quality Control & Assurance 2

Question 1

Which Spring Test annotation loads only a subset of the application context for testing the web layer without starting a full server?

Accepted Answer

@WebMvcTest

Answer

@WebMvcTest loads only MVC components like controllers, filters, and WebMvcConfigurer beans, not the full context.

Question 2

In Spring Boot, what does the @DataJpaTest annotation do by default regarding the datasource?

Accepted Answer

Configures an in-memory embedded database

Answer

@DataJpaTest replaces the configured datasource with an embedded in-memory database by default for isolated repository testing.

Question 3

Which assertion library is commonly used with Spring Boot Test to provide more readable assertions like assertThat(value).isEqualTo(expected)?

Accepted Answer

AssertJ

Answer

AssertJ provides a fluent API with assertThat() that Spring Boot Test auto-imports via spring-boot-starter-test.

Question 4

What is the purpose of @MockBean in a Spring Boot test?

Accepted Answer

Creates a real Spring bean backed by a mock object and adds it to the ApplicationContext

Answer

@MockBean creates a Mockito mock and registers it as a Spring bean, replacing any existing bean of the same type in the context.

Question 5

When using MockMvc, which method is used to simulate an HTTP GET request to a controller endpoint?

Accepted Answer

mockMvc.perform(get("/path"))

Answer

MockMvc.perform() accepts a RequestBuilder such as MockMvcRequestBuilders.get() to simulate HTTP requests in tests.

Spring Framework Practice Test