java - 模拟列表元素中的方法

Question

我的测试主题中有此代码:

public class Widget {
    private Set<Thing> things;
    public Set<Thing> getThings() { return things; }
    public void setThings(Set<Thing> things) { this.things = things; }

    public void performAction(PerformingVisitor performer) {
        for (Thing thing: getThings())
        {
            thing.perform(performer);
        }
    }
}

我的 JUnit/Mockito 测试如下所示:

@RunWith(MockitoJUnitRunner.class)
public class WidgetTest {
    @Mock private PerformingVisitor performer;
    @Mock private Thing thing;
    @InjectMocks private Widget widget;

    @Before
    public void setUp() throws Exception {
        Set<Thing> things = new HashSet<Thing>();
        things.add(thing);
        widget.setThings(things);

        MockitoAnnotations.initMocks(this);
    }

    @Test
    public void shouldPerformThing() {
        Mockito.when(thing.perform(Mockito.any(PerformingVisitor.class))).thenReturn(true);

        widget.performAction(performer);

        Mockito.verify(thing).perform(Mockito.any(PerformingVisitor.class));
    }
}

但是，这给了我错误:

Wanted but not invoked:
thing.perform(<any>);
    -> at com.myclass.ThingTest.shouldPerformThing(WidgetTest.java:132)

我已经验证代码进入了 for 循环，并且应该调用实际的 thing.perform(performer); 行，但我的模拟似乎没有正在录音。

Answer 1

我认为在模拟注入(inject)之前你需要initMocks。

您可以尝试更改您的设置方法吗:

   @Before
   public void setUp() throws Exception {
      MockitoAnnotations.initMocks(this);
      Set<Thing> things = new HashSet<Thing>();
      things.add(thing);
      widget.setThings(things); 
   }

希望有效果