maven 依賴

<!-- 單元測(cè)試-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-core</artifactId>
            <version>2.8.47</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-api-mockito2</artifactId>
            <version>1.7.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.powermock</groupId>
            <artifactId>powermock-module-junit4</artifactId>
            <version>1.7.1</version>
            <scope>test</scope>
        </dependency>
        <!-- 單元測(cè)試 end-->

使用

注意，@InjectMocks 處為實(shí)現(xiàn)類。

@RunWith(PowerMockRunner.class)
public class PlaceOrderServiceImplTest{

    @Mock
    private PlaceOrderBo placeOrderBo;

    // 注意，這里是實(shí)現(xiàn)類，不是接口！
    @InjectMocks
    private PlaceOrderServiceImpl placeOrderService;


    
@Test
public void testAssignDriverPlaceOrder() throws Exception {

    // 打樁
    Mockito.when(placeOrderBo.assignDriverPlaceOrder(Mockito.any())).thenReturn(null);

    // 調(diào)用
    AssignDriverPlaceOrderRequest assignDriverPlaceOrderRequest = new AssignDriverPlaceOrderRequest();
    assignDriverPlaceOrderRequest.setAssignDriverId(1L);
    ResultSupport<AssignDriverPlaceOrderResponse> data = placeOrderService.assignDriverPlaceOrder(assignDriverPlaceOrderRequest);

    // 斷言
    Assert.assertEquals(data, null);
} 


}