在Mockito中检测到未完成的根茬

Question

我在运行测试时遇到了以下异常。我在用Mockito来嘲笑。Mockito库提到的提示没有帮助。

org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:
    -> at com.a.b.DomainTestFactory.myTest(DomainTestFactory.java:355)

    E.g. thenReturn() may be missing.
    Examples of correct stubbing:
        when(mock.isOk()).thenReturn(true);
        when(mock.isOk()).thenThrow(exception);
        doThrow(exception).when(mock).someVoidMethod();
    Hints:
     1. missing thenReturn()
     2. you are trying to stub a final method, you naughty developer!

        at a.b.DomainTestFactory.myTest(DomainTestFactory.java:276)
        ..........

从DomaintenFactory测试代码。当我运行以下测试时，我看到异常。

@Test
public myTest(){
    MyMainModel mainModel =  Mockito.mock(MyMainModel.class);
    Mockito.when(mainModel.getList()).thenReturn(getSomeList()); // Line 355
}

private List<SomeModel> getSomeList() {
    SomeModel model = Mockito.mock(SomeModel.class);
    Mockito.when(model.getName()).thenReturn("SomeName"); // Line 276
    Mockito.when(model.getAddress()).thenReturn("Address");
    return Arrays.asList(model);
}

public class SomeModel extends SomeInputModel{
    protected String address;
    protected List<SomeClass> properties;

    public SomeModel() {
        this.Properties = new java.util.ArrayList<SomeClass>(); 
    }

    public String getAddress() {
        return this.address;
    }

}

public class SomeInputModel{

    public NetworkInputModel() {
        this.Properties = new java.util.ArrayList<SomeClass>(); 
    }

    protected String Name;
    protected List<SomeClass> properties;

    public String getName() {
        return this.Name;
    }

    public void setName(String value) {
        this.Name = value;
    }
}

Answer 1

你在嘲笑中嵌套嘲笑。在完成对MyMainModel的模拟之前，调用getSomelist()，它执行一些模拟。Mockito不喜欢你这么做。

替换

@Test
public myTest(){
    MyMainModel mainModel =  Mockito.mock(MyMainModel.class);
    Mockito.when(mainModel.getList()).thenReturn(getSomeList()); --> Line 355
}

与

@Test
public myTest(){
    MyMainModel mainModel =  Mockito.mock(MyMainModel.class);
    List<SomeModel> someModelList = getSomeList();
    Mockito.when(mainModel.getList()).thenReturn(someModelList);
}

Mockito.when(mainModel.getList()).thenReturn(someModelList);

null

mainModel.getList();
Mockito.when((List<SomeModel>)null).thenReturn(someModelList);

这种样式读起来不太清楚，特别是因为在本例中必须对null进行浇注，但它与Mockito生成了相同的交互序列，并将获得与上面一行相同的结果。

但是，线路

Mockito.when(mainModel.getList()).thenReturn(getSomeList());

导致以下与Mockito的交互：

null

when(mainModel.getList());
// ...
when(model.getName()).thenReturn(...);