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POJMockit and Fest UI testing
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copied!<p>I have been working on a project that has numerous UI components. Since all the components are based on the MVC pattern, they are structured as a component - public interface and factory, package protected model/view/controller.</p> <p>Testing them "by hand" - using mocking tecniques is too difficult and time consuming.</p> <p>So i popped in the Fest framework - <a href="http://fest.easytesting.org/" rel="nofollow">http://fest.easytesting.org/</a>. It's simple, good and does the job.</p> <p>The problem appears when I try to use both JMockit - <a href="http://code.google.com/p/jmockit/" rel="nofollow">http://code.google.com/p/jmockit/</a> and Fest together. I noticed that Fest uses some libraries that could collide with JMockit - reflection and assert. </p> <p>When i run the test, JMockit doesn't mock the required class. I used JMockit before so I'm pretty sure it's some sort of collision between the libraries. There is no $Proxy$ generated on the mocked class, and of course, the class misbehaves.</p> <p><strong>Mocking IS required, since I have to test the full component interaction!</strong></p> <p>Versions:</p> <p>JMockit: 0.999.8</p> <p>Fest:</p> <p>Fest-swing 1.2.1 Fest-assert 1.4 Fest-util 1.1.6 Fest-reflect 1.2</p> <p>I have no intention to go conflict hunting by looking both libraries, so any help would be appretiated.</p> <p>Thanks.</p> <p><strong>UPDATE:</strong> </p> <p>The test/sample code is here:</p> <pre><code>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 } } </code></pre> <p>It seems that I blamed the framework too early. But I still don't understand the details why it doesn't work. The class <em>Service</em> IS mocked, and it should still be usable, even after delaying the expectations. I understand the time problem(initialization of the component), but have no idea how to "fix" this.</p> <p>Thanks.</p> <p><strong>UPDATE2:</strong></p> <p>Thanks, Rogerio. You can test the component with FEST, but it doesn't really take advantage of JMockit, and there are classes that have quite a lot of methods(yes, I know - SRP, but let's try stay on this path) and would benefit greatly from a mocking framework such as JMockit. I used this before posting the question here, so you can use it yourself, and understand that this is not the way I want to go:</p> <pre><code>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"); } } </code></pre> <p><strong>The question remains - does anybody know some way I could test this with JMockit, don't forget the EDT violation.</strong></p>

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