powermock 基本使用

1、mock静态方法

例如要mock HttpUtils.post() 方法，该方法是静态方法

@RunWith(PowerMockRunner.class)
@PrepareForTest({EsServiceImpl.class, HttpClientSignUtil.class})
public class EsServiceImplTest {
    @Test
    public void testSearch() {
        PowerMockito.mockStatic(HttpClientSignUtil.class);
        when(HttpClientSignUtil.post(any(),any(),any())).thenReturn("res"));
    }
}    

2、mock 局部变量

如

public class EmployeeService {
    public int getTotalEmployee() {
        EmployeeDao employeeDao = new EmployeeDao(); 
        return employeeDao.getTotal();
    } 
}

mock如下

@RunWith(PowerMockRunner.class)
@PrepareForTest(EmployeeService.class)
public class EmployeeServiceTest {
    @Test
    public void testGetTotalEmployeeWithMock() {
        EmployeeDao employeeDao = PowerMockito.mock(EmployeeDao.class);
        try {
            PowerMockito.whenNew(EmployeeDao.class).withNoArguments().thenReturn(employeeDao);
            PowerMockito.when(employeeDao.getTotal()).thenReturn(10);
            EmployeeService service = new EmployeeService();
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            int total = service.getTotalEmployee();
            assertEquals(10, total);
        } catch (Exception e) {
            fail("测试失败.");
        }
    }
}

3、mock apollo

@Value

public class RecruitPositionServiceImpl implements RecruitPositionService {

    @Value("${email.export.water.receiver:maoning02}")
    private String receiverOa;
}

// ----------------------------------------------------------

@RunWith(PowerMockRunner.class)
public class RecruitPositionServiceImplTest {

    @InjectMocks
    private RecruitPositionServiceImpl recruitPositionServiceImplUnderTest;

    @Before
    public void setUp() throws Exception {
        ReflectionTestUtils.setField(recruitPositionServiceImplUnderTest, "receiverOa", "receiverOa");
    }
}

@ConfigurationProperties

public class LongChatServiceImpl implements LongChatService {

    @Autowired
    PropertiesConfig propertiesConfig;
}

// --------------------------------------------------------------

@RunWith(PowerMockRunner.class)
@PrepareForTest({LongChatServiceImpl.class, HttpClientSignUtil.class})
public class LongChatServiceImplTest {

    @Mock
    private PropertiesConfig mockPropertiesConfig;

    @InjectMocks
    private LongChatServiceImpl longChatServiceImplUnderTest;

    @Before
    public void setUp() throws Exception {
        longChatServiceImplUnderTest.propertiesConfig = mockPropertiesConfig;
    }
}