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.clas         


        

Answer 1

Add @MockBean(JpaMetamodelMappingContext.class) to above of class DemoControllerIntegrationTests:

@RunWith(SpringRunner.class)
@WebMvcTest(DemoController.class)
@MockBean(JpaMetamodelMappingContext.class)
public class DemoControllerIntegrationTests {
    ...
}

Because you have not used a database in your test, Spring throws this exception. By mocking JpaMetamodelMappingContext class you will bypass the needed metamodel.