To test an async Spring MVC controller with MockMvc, we perform the request, check asyncStarted() and call asyncDispatch() to get the final response. MockMvcTester does both steps in one exchange() call.
Learn to use @RestClientTest annotation provided by Spring boot test module that focuses only on beans that use RestTemplateBuilder or RestTemplate.
Spring boot @DataJpaTest annotation focuses on JPA components and apply configuration only relevant to JPA tests. It helps in testing @Repository classes.
Spring boot @MockBean annotation used to add mocks to a Spring ApplicationContext. In this tutorial, we will learn the different ways to use this annotation.
Learn to unit test Spring Boot webflux controller using @WebFluxTest and WebTestClient, which is used to test reactive endpoints with JUnit.
Write Spring Boot integration tests that start the real app with @SpringBootTest, call the REST API over HTTP with RestTestClient and check an H2 database. Covers @Sql test data, @MockitoBean for external systems, MockMvc, TestRestTemplate in Spring Boot 4, Failsafe and context caching.
Learn to unit test given Spring rest controller APIs using Junit 5 and mockito. This technique can be applied to spring boot as well as spring MVC applications, both.
Learn to create and import test configurations in spring boot applications with the help of @TestConfiguration annotation.
Learn to test spring boot async rest controller using MockMVC and @WebMvcTest which support async requests and return CompletableFuture as response type.
Unit test a Spring Boot service with JUnit and Mockito. Mock the repository with @Mock, build the service with @InjectMocks, stub with when().thenReturn() and check calls with verify(). Also covers @MockitoBean in @SpringBootTest, thenThrow, ArgumentCaptor, BDDMockito, strict stubs and the Mockito Java agent on Java 21+.
Test Spring Boot REST controllers with MockMvc and @WebMvcTest. Replace the service with a @MockitoBean mock and send GET, POST, PUT and DELETE requests with JSON. Then check status codes, validation errors and @RestControllerAdvice responses. Also covers MockMvcTester (AssertJ) and real andDo(print()) output on Spring Boot 4.1.1.
Learn to consume HTTP POST REST API with Spring TestRestTemplate. In this post request test example, we will be sending request body along with request headers. 1. Maven dependencies Make sure, you have spring-boot-starter-test dependency in your project to get access to TestRestTemplate class in runtime. If you are using …
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