code_coverage_9.java

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

    @Autowired
    ApplicationContext ac;

    @Test
    public void contextLoads() {
        Calculator calculator = ac.getBean(Calculator.class);
        assertTrue(calculator instanceof CalculatorImpl);

        CalcController calcController = ac.getBean(CalcController.class);
        assertNotNull(calcController);
    }
}