使用< code>2.1.6 .版本
这是我的带有repo.save方法的serviceImpl类，在db字段重复的情况下，我们捕获异常并返回响应
@Service
public class CoreVoucherServiceImpl implements CoreVoucherService {
@Override
@Transactional(propagation = REQUIRED)
public VoucherDTO createVoucher(VoucherDTO voucherDTO) {
... /* transforming DTO to Entity */
try {
voucherRepository.save(voucher);
} catch (Exception e) {
if (e.getCause() instanceof ConstraintViolationException) {
throw new MyException(FIELD_NOT_UNIQUE, "title");
}
UB_LOGGER.debug("Error in create voucher", e);
throw e;
}
voucherDTO.setId(voucher.getId());
return voucherDTO;
}
}
我无法为catch块添加代码覆盖率。我的测试类是
@SpringBootTest
@RunWith(SpringRunner.class)
public class CoreVoucherServiceTest {
@Autowired
private CoreVoucherService coreVoucherService;
@MockBean
private VoucherRepository voucherRepository;
@Test
// @Test(expected = MyException.class)
public void createVoucherTest() {
VoucherDTO dto = prepareCreateVoucher();
when(voucherRepository.save(any())).thenThrow(Exception.class);
coreVoucherService.createVoucher(dto);
}
}
用上面的方法我得到了下面的错误
org.mockito.exceptions.base.MockitoException:
Checked exception is invalid for this method!
Invalid: java.lang.Exception
我如何抛出一个异常，其getCause是ConstraintViolationException，因此所有行都包含在测试中
您必须在catch块中测试两个用例：
异常原因为< code > ConstraintViolationException 时
.thenThrow(new RuntimeException(new ConstraintViolationException("Field not Unique", null, "title")));
当异常原因不是< code > ConstraintViolationException 时
.thenThrow(new RuntimeException("oops"));
在这种情况下，@ExpectedException将是RuntimeException
您应该抛出ConstraintViolationException，因为save方法不会根据其方法定义save抛出任何选中的异常
when(voucherRepository.save(any()))
.thenThrow(.ConstraintViolationException.class);
还可以在Junit中用@Rule和ExpectedException测试异常。
@SpringBootTest
@RunWith(SpringRunner.class)
public class CoreVoucherServiceTest {
@Autowired
private CoreVoucherService coreVoucherService;
@MockBean
private VoucherRepository voucherRepository;
@Rule
public ExpectedException exceptionRule = ExpectedException.none();
@Test
// @Test(expected = MyException.class)
public void createVoucherTest() {
exceptionRule.expect(Exception.class); // Better if you specify specific Exception class that is going to be thrown.
VoucherDTO dto = prepareCreateVoucher();
when(voucherRepository.save(any())).thenThrow(Exception.class);
coreVoucherService.createVoucher(dto);
}
}
