JMockit和Fest测试

Question

我一直在做一个有很多UI组件的项目。因为所有的组件都是基于MVC模式的，所以它们被构造成一个组件--公共接口和工厂、包保护模型/视图/控制器。

“用手”测试它们--使用嘲弄技术太困难了，也太费时。

所以我跳进了Fest框架-- http://fest.easytesting.org/。很简单，很好，做好了这份工作。

当我尝试同时使用JMockit - http://code.google.com/p/jmockit/和Fest时，问题就出现了。我注意到Fest使用了一些可能与JMockit冲突的库-反射和断言。

当我运行测试时，JMockit不模拟所需的类。我以前使用过JMockit，所以我很确定这是库之间的某种冲突。在模拟的类上没有生成$Proxy$，当然，类的行为也不正常。

模拟是必需的，因为我必须测试整个组件交互！

版本：

JMockit: 0.999.8

节日：

节-秋千1.2.1节-断言1.4节-实用1.1.6节-反映1.2

我不打算通过查找两个库来寻找冲突，所以任何帮助都会被认可。

谢谢。

更新：

测试/示例代码如下：

public interface SimpleControllable {
    void init();

    JPanel getPanel();
}

public class SimpleController implements SimpleControllable {

    private final SimpleForm simpleForm;
    private final SimpleModel simpleModel;

    public SimpleController(
            final SimpleForm simpleForm,
            final SimpleModel simpleModel
    ) {
        this.simpleForm = simpleForm;
        this.simpleModel = simpleModel;
    }

    @Override
    public void init() {
        simpleForm.init();

        //This works!
        /*simpleForm.getTestButton().addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                simpleForm.getTestButton().setText(simpleModel.getSimpleValue());
            }
        });*/

        //This doesn't!
        simpleForm.getTestButton().setText(simpleModel.getSimpleValue());
    }

    @Override
    public JPanel getPanel() {
        return simpleForm.getTestPanel();
    }
}


public class SimpleModel {

    private final SimpleServable simpleServable;

    public SimpleModel(final SimpleServable simpleServable) {
        this.simpleServable = simpleServable;
    }

    public String getSimpleValue() {
        return simpleServable.getValue();
    }
}

public interface SimpleServable {
    String getValue();
}

public class SimpleService implements SimpleServable {

    private String value;

    @Override
    public String getValue() {
        return value;
    }
}

public class SimpleForm {
    private JButton testButton;
    private JPanel testPanel;

    public void init() {
        testPanel.setName("testPanel");
        testButton.setName("testButton");
    }

    public JButton getTestButton() {
        return testButton;
    }

    public JPanel getTestPanel() {
        return testPanel;
    }
}

public class SimpleTest extends FestSwingJUnitTestCase {

    @Mocked
    private SimpleService simpleServable;

    private FrameFixture window;

    @Override
    protected void onSetUp() {
        FailOnThreadViolationRepaintManager.install();

        JFrame frameUi = GuiActionRunner.execute(new GuiQuery<JFrame>() {
            protected JFrame executeInEDT() {

                SimpleControllable simpleControllable = getSimpleControllable();

                JFrame frame = new JFrame("TEST");

                frame.add(simpleControllable.getPanel());
                frame.setVisible(true);
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                frame.pack();

                return frame;
            }
        });


        robot().settings().delayBetweenEvents(1000);

        // IMPORTANT: note the call to 'robot()'
        // we must use the Robot from FestSwingTestngTestCase

        window = new FrameFixture(robot(), frameUi);
        window.show(); // shows the frameU
    }

    //Should use factory, but not neccesary for test purposes...
    private SimpleControllable getSimpleControllable() {
        SimpleForm simpleForm = new SimpleForm();

        //SimpleServable simpleServable = new SimpleService();
        SimpleModel simpleModel = new SimpleModel(simpleServable);

        SimpleControllable simpleControllable = new SimpleController(
                simpleForm,
                simpleModel
        );

        //Initialize the component, therein lies the problem...
        simpleControllable.init();

        return simpleControllable;
    }

    @Test
    public void test() throws Exception {
        //Before
        new Expectations() {
            {
                simpleServable.getValue();
                result = "TEST";
            }
        };

        //When

        //This works!
//        window.panel("testPanel").button("testButton").click().requireText("TEST");

        //This doesn't!
        window.panel("testPanel").button("testButton").requireText("TEST");

        //Then
    }
}

看来我把责任归咎于框架太早了。但我还是不明白为什么它不起作用。类服务是被嘲弄的，即使在延迟了预期之后，它仍然应该是可用的。我理解时间问题(组件的初始化)，但不知道如何“修复”这个问题。

谢谢。

UPDATE2:

谢谢罗格里奥。您可以使用FEST测试组件，但它并没有真正利用JMockit，而且有些类拥有相当多的方法(是的，我知道-- SRP，但让我们继续使用这个路径)，并将从JMockit这样的模拟框架中获益良多。在这里发布问题之前，我使用了这个方法，这样您就可以自己使用它，并且理解这不是我想要的方式：

public class SimpleTest extends FestSwingJUnitTestCase {

    //This works, and I used this mechanism before, but this is without the help of JMockit.
    //If you have a lot of methods you want to mock this test turns into chaos.
    public static class MockSimpleServable implements SimpleServable{

        @Override
        public String getValue() {
            return "TEST";
        }
    }

//    @Mocked
//    private SimpleServable simpleServable;

    private FrameFixture window;

    @Override
    protected void onSetUp() {
        FailOnThreadViolationRepaintManager.install();

        JFrame frameUi = GuiActionRunner.execute(new GuiQuery<JFrame>() {
            protected JFrame executeInEDT() {

                SimpleControllable simpleControllable = getSimpleControllable();

                JFrame frame = new JFrame("TEST");

                frame.add(simpleControllable.getPanel());
                frame.setVisible(true);
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                frame.pack();

                return frame;
            }
        });


        robot().settings().delayBetweenEvents(1000);

        // IMPORTANT: note the call to 'robot()'
        // we must use the Robot from FestSwingTestngTestCase

        window = new FrameFixture(robot(), frameUi);
        window.show(); // shows the frameU
    }

    //Should use factory, but not neccesary for test purposes...
    private SimpleControllable getSimpleControllable() {
        SimpleForm simpleForm = new SimpleForm();

        //SimpleServable simpleServable = new SimpleService();
        SimpleServable simpleServable = new MockSimpleServable();
        SimpleModel simpleModel = new SimpleModel(simpleServable);

        SimpleControllable simpleControllable = new SimpleController(
                simpleForm,
                simpleModel
        );

        //Initialize the component, therein lies the problem...
        simpleControllable.init();

        return simpleControllable;
    }

    @Test
    public void test() throws Exception {
        //This works!
//        window.panel("testPanel").button("testButton").click().requireText("TEST");

        //This doesn't!
        window.panel("testPanel").button("testButton").requireText("TEST");
    }
}

问题仍然存在--有人知道我可以用JMockit测试这个问题吗，别忘了违反了EDT。。

Answer 1

问题是在测试代码中，在测试中记录对该方法调用的期望之前，在窗口构造过程中调用SimpleServable#getValue()。

要解决这个问题，只需将new Expectation() {{ ... }}块移动到onSetUp()方法，将其放在调用GuiActionRunner.execute(GuiQuery)之前。

代码的以下简化版本说明了这一点：

public final class SimpleForm
{
    final JPanel testPanel;
    final JButton testButton;

    public SimpleForm()
    {
        testPanel = new JPanel();
        testPanel.setName("testPanel");
        testButton = new JButton();
        testButton.setName("testButton");
        testPanel.add(testButton);
    }
}

public final class SimpleService {
    public String getValue() { return null; }
}

public final class SimpleController
{
   private final SimpleForm form;

   public SimpleController()
   {
      form = new SimpleForm();
      SimpleService service = new SimpleService();
      form.testButton.setText(service.getValue());
   }

   public JPanel getPanel() { return form.testPanel; }
}

public final class SimpleTest extends FestSwingJUnitTestCase
{
   FrameFixture window;
   @NonStrict SimpleService service;

   @Override
   protected void onSetUp()
   {
      FailOnThreadViolationRepaintManager.install();

      // Record expectations *before* they are replayed:
      new Expectations() {{ service.getValue(); result = "TEST"; }};

      JFrame frameUi = GuiActionRunner.execute(new GuiQuery<JFrame>() {
         @Override
         protected JFrame executeInEDT()
         {
            SimpleController controller = new SimpleController();

            JFrame frame = new JFrame("TEST");
            frame.add(controller.getPanel());
            frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
            frame.pack();
            return frame;
         }
      });

      robot().settings().delayBetweenEvents(1000);

      window = new FrameFixture(robot(), frameUi);
      window.show();
   }

   @Test
   public void test()
   {
      // This works provided "service.getValue()" gets called *after* 
      // expectations are recorded. With the call happening during the
      // creation of the window, it must be recorded at the beginning
      // of the "onSetUp" method.
      window.panel("testPanel").button("testButton").requireText("TEST");
   }
}