Getting "At least one JPA metamodel must be present" with @WebMvcTest

Question

I'm fairly new to Spring, trying to do some basic integration tests for a @Controller.

@RunWith(SpringRunner.class) @WebMvcTest(DemoController.class) public class DemoControllerIntegrationTests {     @Autowired     private MockMvc mvc;      @MockBean     private DemoService demoService;      @Test     public void index_shouldBeSuccessful() throws Exception {         mvc.perform(get("/home").accept(MediaType.TEXT_HTML)).andExpect(status().isOk());     } } 

but I'm getting

 java.lang.IllegalStateException: Failed to load ApplicationContext Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: At least one JPA metamodel must be present! Caused by: java.lang.IllegalArgumentException: At least one JPA metamodel must be present! 

Unlike most people posting this error, I don't want to use JPA for this. Am I trying to use @WebMvcTest incorrectly? How can I track down the Spring magic that's inviting JPA to this party?

Answer 1

Remove any @EnableJpaRepositories or @EntityScan from your SpringBootApplication class instead do this:

package com.tdk;  @SpringBootApplication @Import({ApplicationConfig.class }) public class TdkApplication {      public static void main(String[] args) {         SpringApplication.run(TdkApplication.class, args);     } } 

And put it in a separate config class:

package com.tdk.config;  @Configuration @EnableJpaRepositories(basePackages = "com.tdk.repositories") @EntityScan(basePackages = "com.tdk.domain") @EnableTransactionManagement public class ApplicationConfig {  } 

And here the tests:

@RunWith(SpringRunner.class) @WebAppConfiguration @WebMvcTest public class MockMvcTests {  }