powermock

添加Maven依赖

		<dependency>
			<groupId>org.powermock</groupId>
			<artifactId>powermock-api-mockito</artifactId>
		</dependency>
		<dependency>
			<groupId>org.powermock</groupId>
			<artifactId>powermock-module-junit4</artifactId>
		</dependency>

待测模拟测试类方法

Mock的方法测试

powerMock方法


返回值为 void 方法模拟

    @Test
    public void testSaveUserWithPowerMock(){
        UserDao uDao = PowerMockito.mock(UserDao.class);
        User user = new User();
        PowerMockito.doNothing().when(uDao).insertUser(user);
        UserService userService  = new UserService(uDao);
        userService.saveUser(user);

        Mockito.verify(uDao).insertUser(user);
    }

模拟静态方法

public class UserDao {

    public static int getCount() {
        throw new UnsupportedOperationException();
    }

    public static void insertUser(User user) {
        throw new UnsupportedOperationException();
    }
}

public class UserService {

    public int queryUserCount() {
        return UserDao.getCount();
    }

    public void saveUser(User user) {
        UserDao.insertUser(user);
    }
}

Test

@RunWith(PowerMockRunner.class)
@PrepareForTest({UserService.class, UserDao.class})
public class UserServiceTest {

    @Test
    public void testQueryUserCount() throws Exception {
        mockStatic(UserDao.class);
        when(UserDao.getCount()).thenReturn(10);
        UserService userService = new UserService();
        int result = userService.queryUserCount();
        assertEquals(10, result);
    }

    @Test
    public void testSaveUser() throws Exception {
        mockStatic(UserDao.class);
        User user = new User();
        doNothing().when(UserDao.class);

        UserService userService = new UserService();
        userService.saveUser(user);

        PowerMockito.verifyStatic();
    }
}