Junit5Test.java

@ExtendWith(MockitoExtension.class)
@DisplayName("Spring boot 2 mockito2 Junit5 example")
public class ShowServiceTests {
	private static final String MOCK_OUTPUT = "Mocked show label";

	@Mock
	private TextService textService;

	@InjectMocks
	private ShowService showService;

	@BeforeEach
	void setMockOutput() {
		when(textService.getText()).thenReturn(MOCK_OUTPUT);
	}

	@Test
	@DisplayName("Mock the output of the text service using mockito")
	public void contextLoads() {

		assertEquals(showService.getShowLable(), MOCK_OUTPUT);

	}

}