getter（）的Mockito/junit5org.opentest4j.assertionFailedError

Question

@Mock
private MyentityAServiceImpl myentityAServiceImplmock;
@Captor
private ArgumentCaptor<MyentityA> myentityAArgument;
@Mock
private MyentityBdao myentityBdaomock;
@Mock
private MyentityB myentityBmock;
@Mock
private Logger loggermock;
@InjectMocks
private MyentityBServiceImpl teServiceImpl;

@Test
public void setMyentityAOfTeIfNullByLanr17() {
    myentityBmock.setLanr7( "1234567" );
    final MyentityA myentityA = new MyentityA();
    mockito.when( myentityAServiceImplmock.findMyentityAByLanr17( myentityBmock.getLanr7() ) ).thenReturn( myentityA );
    mockito.when( myentityBdaomock.save( myentityBmock ) ).thenReturn( myentityBmock );
    myentityBmock = teServiceImpl.setMyentityAOfTeIfNullByLanr17( myentityBmock );
    mockito.verify( myentityBmock ).setMyentityA( myentityAArgument.capture() );
    Assertions.assertNotNull( myentityAArgument );
    Assertions.assertNotNull( myentityBmock.getMyentityA() );  // --> org.opentest4j.AssertionFailedError: expected: not <null>
}

  public MyentityB setMyentityAOfTeIfNullByLanr17( final MyentityB entity ) {
    MyentityA myentityA = entity.getMyentityA();
    if ( myentityA != null ) {
        return entity;
    }
    final String lanr17 = entity.getLanr7();
    myentityA = myentityAServiceImpl.findMyentityAByLanr17( lanr17 );
    if ( myentityA != null ) {
        entity.setMyentityA( myentityA );
        entity.setModuser( "root" );
        return myentityBdao.save( entity );
    }
    return entity;
}

Answer 1

对不起，您的测试代码实在太复杂了。
它对被测方法中操作的对象的调用流描述得太好了。
除了模拟许多东西：依赖项、被测方法的参数。
最后，您将被测方法的返回赋给引用被模拟参数的变量。这让事情变得很不清楚。

一个测试必须是直截了当的，可理解的，但事实并非如此。
我花了大约5兆的时间来理解错误的原因。对于这样一个简单的代码来说，这是一个很大的问题。

此断言失败：

Assertions.assertNotNull( myentityBmock.getMyentityA() );  // --> org.opentest4j.AssertionFailedError: expected: not <null>

if ( myentityA != null ) {
    entity.setMyentityA( myentityA ); // here you invoke a mocked method.
    entity.setModuser( "root" );
    return myentityBdao.save( entity );
}

mockito.verify( myentityBmock ).setMyentityA( myentityAArgument.capture() );

因为您无法测试setMyEntitya()的副作用。

但实际上，我强烈建议您在不嘲笑被测试方法的参数的情况下对您的方法进行单元测试。
它可能看起来像：

@Test
public void setMyentityAOfTeIfNullByLanr17() {
    MyentityB entityB = new MyentityB(...) ;
    entityB.setLanr7( "1234567" );
    final MyentityA myentityA = new MyentityA();
    mockito.when( myentityAServiceImplmock.findMyentityAByLanr17( entityB.getLanr7() ) ).thenReturn( myentityA );
    mockito.when( myentityBdaomock.save(entityB) ).thenReturn(entityB);

    // action
    MyentityB entityActualB = teServiceImpl.setMyentityAOfTeIfNullByLanr17(entityB);

    // Perform content/logic assertion and no flow assertion :
    Assertions.assertEquals(myEntityA, entityActualB.getMyEntityA());
    Assertions.assertEquals("root", entityActualB.getModuser());
}

没有经过测试的代码，但它应该有助于您理解我的意图。