Developing Java Applications with Spring and Spring Boot

How to do it...

1. First, we will create a new MockPublisherRepositoryTests test class in the src/test/java/com/example/bookpub directory at the root of our project with the following content:

import static org.assertj.core.api.Assertions.assertThat;import static org.mockito.BDDMockito.given;import static org.mockito.BDDMockito.reset; @RunWith(SpringRunner.class) @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE) public class MockPublisherRepositoryTests { @MockBean private PublisherRepository repository; @Before public void setupPublisherRepositoryMock() { given(repository.count()).willReturn(5L); } @Test public void publishersExist() { assertThat(repository.count()).isEqualTo(5L); } @After public void resetPublisherRepositoryMock() ...