Testing Spring Boot Applications

Transcript

1. Testing Spring Boot Applications Andy Wilkinson @ankinson
2. @ankinson Why Bother Testing At All?
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4. @ankinson Risk None YOLO Tests 0 Lots
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6. @ankinson Unit Tests
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8. @ankinson MockRestServiceServer OkHTTP’s MockWebServer Spring Data Repositories JdbcTemplate
9. @ankinson Testcontainers
10. @ankinson https://www.testcontainers.org
11. @ankinson @SpringBootTest @Testcontainers(disabledWithoutDocker = true) @ContextConfiguration(initializers = ExampleIntegrationTests.Initializer.class) class ExampleIntegrationTests { @Container public static CassandraContainer<?> cassandra = new CassandraContainer<>(); static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> { @Override public void initialize(ConfigurableApplicationContext context) { int cqlPort = cassandra.getMappedPort(CassandraContainer.CQL_PORT); TestPropertyValues.of("spring.data.cassandra.port=" + cqlPort) .applyTo(context.getEnvironment()); } } }
12. @ankinson Integration Tests
13. @ankinson @SpringBootTest
14. @ankinson Context Caching
15. @ankinson @SpringBootTest(properties="spring.jmx.enabled=true") @ActiveProfiles("standalone") @TestPropertySource(locations="standalone.properties") class ExampleIntegrationTests { @Test void contextLoads() { } } @ContextConfiguration @Import @TestPropertySource @ActiveProfiles @SpringBootTest
16. @ankinson @DirtiesContext
17. @ankinson Sliced Tests
18. @ankinson @JsonTest @WebMvcTest @WebFluxTest @DataJpaTest @JdbcTest @JooqTest @DataMongoTest @DataNeo4jTest @DataRedisTest @DataLdapTest @RestClientTest
19. @ankinson @WebMvcTest @DataJpaTest OrderRepository extends JpaRepository<…> @Controller OrderController @Controller CustomerController CustomerRepository extends JpaRepository<…> @SpringBootApplication Application
20. @ankinson @MockBean and @SpyBean
21. @ankinson @WebMvcTest class CustomerControllerIntegrationTests { @Autowired private MockMvc mockMvc; @Configuration static class RepositoryConfiguration { @Bean CustomerRepository customers() { return mock(CustomerRepository.class); } @Bean OrderRepository orders() { return mock(OrderRepository.class); } } }
22. @ankinson Customer Customer Order @WebMvcTest class CustomerControllerTests { @Autowired private MockMvc mockMvc; @MockBean private CustomerRepository customers; @MockBean private OrderRepository orders; } (controllers = CustomerController.class)
23. JUnit 5: Evolution and Innovation Sam Brannen Thursday 10:30am–11:40am Ballroom F
24. Thanks! Q&A Andy Wilkinson @ankinson #springone @s1p