tests/org.eclipse.emf.ecp.ide.view.service.test/src/org/eclipse/emf/ecp/ide/view/service/test/IDEViewModelRegistry_PTest.java - emfclient/org.eclipse.emf.ecp.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2011-2014 EclipseSource Muenchen GmbH and others.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  * Alexandra Buzila - initial API and implementation
  ******************************************************************************/
 package org.eclipse.emf.ecp.ide.view.service.test;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;

 import java.io.IOException;
 import java.lang.reflect.Field;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.core.resources.IResourceChangeListener;
 import org.eclipse.core.resources.IWorkspaceRoot;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.emf.common.util.URI;
 import org.eclipse.emf.ecore.resource.Resource;
 import org.eclipse.emf.ecore.resource.ResourceSet;
 import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
 import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl;
 import org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl;
 import org.eclipse.emf.ecp.ide.view.service.IDEViewModelRegistry;
 import org.eclipse.emf.ecp.ide.view.service.ViewModelEditorCallback;
 import org.eclipse.emf.ecp.view.spi.model.VView;
 import org.eclipse.emf.ecp.view.spi.model.VViewFactory;
 import org.eclipse.jface.resource.JFaceResources;
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;

 /**
  * @author Alexandra Buzila
  *
  */
 @SuppressWarnings("restriction")
 public class IDEViewModelRegistry_PTest {

 	/**
 	 * @throws java.lang.Exception
 	 */
 	@BeforeClass
 	public static void setUpBeforeClass() throws Exception {
 		try {
 			JFaceResources.getImageRegistry();
 		} catch (final RuntimeException e) {
 			// expected fail, some strange initialization error is happing
 		}
 		final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
 		final IProject project = root.getProject("TestEcoreHelperProjectResources");
 		// create resources to register and unregister
 		if (!project.exists()) {
 			installResourcesProject();
 		}
 	}

 	private static void installResourcesProject() {
 		final ProjectInstallerWizard wiz = new ProjectInstallerWizard();
 		try {
 			wiz.installExample(new NullProgressMonitor());
 		} catch (final Exception e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}
 	}

 	/**
 	 * @throws java.lang.Exception
 	 */
 	@AfterClass
 	public static void tearDownAfterClass() throws Exception {
 	}

 	private VView view;

 	/**
 	 * @throws java.lang.Exception
 	 */
 	@Before
 	public void setUp() throws Exception {
 		view = VViewFactory.eINSTANCE.createView();
 		view.getEcorePaths().add("/TestIDEViewRegistryProjectResources/task.ecore");
 	}

 	/**
 	 * Test method for
 	 * {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#register(java.lang.String, org.eclipse.emf.ecp.view.spi.model.VView)}
 	 * .
 	 */
 	@SuppressWarnings("unchecked")
 	@Test
 	public void testRegisterAndUnregisterOneViewPerEcore() {
 		final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
 		final String ecorePath = "test/ecore/path";
 		Map<String, Set<VView>> ecoreViewMapping = null;
 		Map<String, IResourceChangeListener> resourceChangeListeners = null;
 		try {
 			ecoreViewMapping = (Map<String, Set<VView>>) getFieldByName(registry, "ecoreViewMapping");
 			resourceChangeListeners = (Map<String, IResourceChangeListener>) getFieldByName(registry,
 				"resourceChangeListeners");
 		} catch (final Exception e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}

 		assertFalse("Registry already contains ecore path in ecoreViewMapping",
 			ecoreViewMapping.containsKey(ecorePath));
 		assertFalse("Registry already contains ecore path in resourceChangeListeners",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.register(ecorePath, view);

 		assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view));
 		assertTrue(
 			"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.unregister(ecorePath, view);

 		assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view));
 		assertFalse(
 			"Unregistering of ecore failed: resourceChangeListeners map still contains the registered ecorePath.",
 			resourceChangeListeners.containsKey(ecorePath));

 	}

 	/**
 	 * Test method for
 	 * {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#register(java.lang.String, org.eclipse.emf.ecp.view.spi.model.VView)}
 	 * .
 	 */
 	@SuppressWarnings("unchecked")
 	@Test
 	public void testRegisterAndUnregisterTwoViewsPerEcore() {

 		final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
 		final String ecorePath = "test/ecore/path";

 		final VView view1 = VViewFactory.eINSTANCE.createView();
 		final VView view2 = VViewFactory.eINSTANCE.createView();

 		Map<String, Set<VView>> ecoreViewMapping = null;
 		Map<String, IResourceChangeListener> resourceChangeListeners = null;
 		try {
 			ecoreViewMapping = (Map<String, Set<VView>>) getFieldByName(registry, "ecoreViewMapping");
 			resourceChangeListeners = (Map<String, IResourceChangeListener>) getFieldByName(registry,
 				"resourceChangeListeners");
 		} catch (final Exception e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}

 		assertFalse("Registry already contains ecore path in ecoreViewMapping",
 			ecoreViewMapping.containsKey(ecorePath));
 		assertFalse("Registry already contains ecore path in resourceChangeListeners",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.register(ecorePath, view1);
 		assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view1));
 		assertTrue(
 			"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.register(ecorePath, view2);
 		assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view2));
 		assertTrue(
 			"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.unregister(ecorePath, view1);
 		assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view1));
 		assertTrue("Unregistering failed: incorrect view was removed from ecoreViewMapping.",
 			ecoreViewMapping.get(ecorePath).contains(view2));
 		assertTrue("Unregistering failed: incorrect ecorePath was removed from resourceChangeListeners map.",
 			resourceChangeListeners.containsKey(ecorePath));

 		registry.unregister(ecorePath, view2);
 		assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view1));
 		assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
 			ecoreViewMapping.get(ecorePath).contains(view2));
 		assertFalse(
 			"Unregistering of ecore failed: resourceChangeListeners map still contains the registered ecorePath.",
 			resourceChangeListeners.containsKey(ecorePath));

 	}

 	/**
 	 * Test method for
 	 * {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#registerViewModelEditor(org.eclipse.emf.ecp.view.spi.model.VView, org.eclipse.emf.ecp.ide.view.service.ViewModelEditorCallback)}
 	 * .
 	 */
 	@SuppressWarnings("unchecked")
 	@Test
 	public void testRegisterUnregisterViewModelEditor() {
 		final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
 		Map<VView, ViewModelEditorCallback> viewModelViewModelEditorMapping = null;
 		try {
 			viewModelViewModelEditorMapping = (Map<VView, ViewModelEditorCallback>) getFieldByName(registry,
 				"viewModelViewModelEditorMapping");
 		} catch (final Exception e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}

 		assertFalse("", viewModelViewModelEditorMapping.containsKey(view));

 		final ViewModelEditorCallback viewModelEditor = new ViewModelEditorCallback() {

 			@Override
 			public void signalEcoreOutOfSync() {
 				// TODO Auto-generated method stub

 			}

 			@Override
 			public void reloadViewModel() {
 				// TODO Auto-generated method stub

 			}
 		};
 		try {
 			registry.registerViewModelEditor(view, viewModelEditor);
 		} catch (final IOException e) {
 			// TODO Auto-generated catch block
 			e.printStackTrace();
 		}

 		assertTrue("", viewModelViewModelEditorMapping.containsKey(view));

 		registry.unregisterViewModelEditor(view, viewModelEditor);

 		assertFalse("", viewModelViewModelEditorMapping.containsKey(view));
 	}

 	@Test
 	public void testRegisterViewModelEditorWithEcoreChange() throws IOException, InterruptedException {
 		// setup
 		final CountDownLatch latch = new CountDownLatch(1);
 		final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
 		final ViewModelEditorCallback callback = new ViewModelEditorCallback() {

 			@Override
 			public void signalEcoreOutOfSync() {
 				latch.countDown();
 			}

 			@Override
 			public void reloadViewModel() {
 				// not tested
 			}
 		};
 		for (final String ecorePath : view.getEcorePaths()) {
 			registry.register(ecorePath, view);
 		}
 		registry.registerViewModelEditor(view, callback);

 		// act
 		final IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
 		IProject project = null;
 		for (final IProject p : projects) {
 			if ("TestIDEViewRegistryProjectResources".equals(p.getName())) {
 				project = p;
 			}
 		}
 		final IFile file = project.getFile("task.ecore");
 		final Resource resource = loadEcore(file);
 		// calling save without a change will trigger listener
 		resource.save(null);

 		// assert
 		assertTrue("signalEcoreOutOfSync has not been called", latch.await(1, TimeUnit.SECONDS));
 		registry.unregisterViewModelEditor(view, callback);

 		for (final String ecorePath : view.getEcorePaths()) {
 			registry.unregister(ecorePath, view);
 		}
 	}

 	@SuppressWarnings("unchecked")
 	@Test
 	public void testRegisterViewModel() throws Exception {
 		final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
 		final Map<VView, String> viewModelviewModelFileMapping = (Map<VView, String>) getFieldByName(registry,
 			"viewModelviewModelFileMapping");

 		assertTrue(viewModelviewModelFileMapping.isEmpty());
 		final String path = "path1234";
 		registry.registerViewModel(view, path);
 		assertTrue(viewModelviewModelFileMapping.containsKey(view));
 		assertEquals(path, viewModelviewModelFileMapping.get(view));
 	}

 	private Object getFieldByName(Object instance, String fieldName) throws Exception {
 		final Field f = instance.getClass().getDeclaredField(fieldName);
 		f.setAccessible(true);

 		return f.get(instance);
 	}

 	private static Resource loadEcore(IFile file) {
 		final ResourceSet resourceSet = new ResourceSetImpl();
 		final Map<String, Object> extensionMap = resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap();
 		extensionMap.put("*", new XMIResourceFactoryImpl());
 		final URI uri = URI.createPlatformResourceURI(file.getFullPath().toString(), false);
 		return resourceSet.getResource(uri, true);
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2011-2014 EclipseSource Muenchen GmbH and others.
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Alexandra Buzila - initial API and implementation
	******************************************************************************/
	package org.eclipse.emf.ecp.ide.view.service.test;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertFalse;
	import static org.junit.Assert.assertTrue;

	import java.io.IOException;
	import java.lang.reflect.Field;
	import java.util.Map;
	import java.util.Set;
	import java.util.concurrent.CountDownLatch;
	import java.util.concurrent.TimeUnit;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.core.resources.IResourceChangeListener;
	import org.eclipse.core.resources.IWorkspaceRoot;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.emf.common.util.URI;
	import org.eclipse.emf.ecore.resource.Resource;
	import org.eclipse.emf.ecore.resource.ResourceSet;
	import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
	import org.eclipse.emf.ecore.xmi.impl.XMIResourceFactoryImpl;
	import org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl;
	import org.eclipse.emf.ecp.ide.view.service.IDEViewModelRegistry;
	import org.eclipse.emf.ecp.ide.view.service.ViewModelEditorCallback;
	import org.eclipse.emf.ecp.view.spi.model.VView;
	import org.eclipse.emf.ecp.view.spi.model.VViewFactory;
	import org.eclipse.jface.resource.JFaceResources;
	import org.junit.AfterClass;
	import org.junit.Before;
	import org.junit.BeforeClass;
	import org.junit.Test;

	/**
	* @author Alexandra Buzila
	*
	*/
	@SuppressWarnings("restriction")
	public class IDEViewModelRegistry_PTest {

	/**
	* @throws java.lang.Exception
	*/
	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	try {
	JFaceResources.getImageRegistry();
	} catch (final RuntimeException e) {
	// expected fail, some strange initialization error is happing
	}
	final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
	final IProject project = root.getProject("TestEcoreHelperProjectResources");
	// create resources to register and unregister
	if (!project.exists()) {
	installResourcesProject();
	}
	}

	private static void installResourcesProject() {
	final ProjectInstallerWizard wiz = new ProjectInstallerWizard();
	try {
	wiz.installExample(new NullProgressMonitor());
	} catch (final Exception e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}
	}

	/**
	* @throws java.lang.Exception
	*/
	@AfterClass
	public static void tearDownAfterClass() throws Exception {
	}

	private VView view;

	/**
	* @throws java.lang.Exception
	*/
	@Before
	public void setUp() throws Exception {
	view = VViewFactory.eINSTANCE.createView();
	view.getEcorePaths().add("/TestIDEViewRegistryProjectResources/task.ecore");
	}

	/**
	* Test method for
	* {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#register(java.lang.String, org.eclipse.emf.ecp.view.spi.model.VView)}
	* .
	*/
	@SuppressWarnings("unchecked")
	@Test
	public void testRegisterAndUnregisterOneViewPerEcore() {
	final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
	final String ecorePath = "test/ecore/path";
	Map<String, Set<VView>> ecoreViewMapping = null;
	Map<String, IResourceChangeListener> resourceChangeListeners = null;
	try {
	ecoreViewMapping = (Map<String, Set<VView>>) getFieldByName(registry, "ecoreViewMapping");
	resourceChangeListeners = (Map<String, IResourceChangeListener>) getFieldByName(registry,
	"resourceChangeListeners");
	} catch (final Exception e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}

	assertFalse("Registry already contains ecore path in ecoreViewMapping",
	ecoreViewMapping.containsKey(ecorePath));
	assertFalse("Registry already contains ecore path in resourceChangeListeners",
	resourceChangeListeners.containsKey(ecorePath));

	registry.register(ecorePath, view);

	assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view));
	assertTrue(
	"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
	resourceChangeListeners.containsKey(ecorePath));

	registry.unregister(ecorePath, view);

	assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view));
	assertFalse(
	"Unregistering of ecore failed: resourceChangeListeners map still contains the registered ecorePath.",
	resourceChangeListeners.containsKey(ecorePath));

	}

	/**
	* Test method for
	* {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#register(java.lang.String, org.eclipse.emf.ecp.view.spi.model.VView)}
	* .
	*/
	@SuppressWarnings("unchecked")
	@Test
	public void testRegisterAndUnregisterTwoViewsPerEcore() {

	final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
	final String ecorePath = "test/ecore/path";

	final VView view1 = VViewFactory.eINSTANCE.createView();
	final VView view2 = VViewFactory.eINSTANCE.createView();

	Map<String, Set<VView>> ecoreViewMapping = null;
	Map<String, IResourceChangeListener> resourceChangeListeners = null;
	try {
	ecoreViewMapping = (Map<String, Set<VView>>) getFieldByName(registry, "ecoreViewMapping");
	resourceChangeListeners = (Map<String, IResourceChangeListener>) getFieldByName(registry,
	"resourceChangeListeners");
	} catch (final Exception e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}

	assertFalse("Registry already contains ecore path in ecoreViewMapping",
	ecoreViewMapping.containsKey(ecorePath));
	assertFalse("Registry already contains ecore path in resourceChangeListeners",
	resourceChangeListeners.containsKey(ecorePath));

	registry.register(ecorePath, view1);
	assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view1));
	assertTrue(
	"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
	resourceChangeListeners.containsKey(ecorePath));

	registry.register(ecorePath, view2);
	assertTrue("Registering of ecore failed: ecoreViewMapping does not contain the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view2));
	assertTrue(
	"Registering of ecore failed: resourceChangeListeners map does not contain the registered ecorePath.",
	resourceChangeListeners.containsKey(ecorePath));

	registry.unregister(ecorePath, view1);
	assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view1));
	assertTrue("Unregistering failed: incorrect view was removed from ecoreViewMapping.",
	ecoreViewMapping.get(ecorePath).contains(view2));
	assertTrue("Unregistering failed: incorrect ecorePath was removed from resourceChangeListeners map.",
	resourceChangeListeners.containsKey(ecorePath));

	registry.unregister(ecorePath, view2);
	assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view1));
	assertFalse("Unregistering of ecore failed: ecoreViewMapping still contains the registered view.",
	ecoreViewMapping.get(ecorePath).contains(view2));
	assertFalse(
	"Unregistering of ecore failed: resourceChangeListeners map still contains the registered ecorePath.",
	resourceChangeListeners.containsKey(ecorePath));

	}

	/**
	* Test method for
	* {@link org.eclipse.emf.ecp.ide.view.internal.service.IDEViewModelRegistryImpl#registerViewModelEditor(org.eclipse.emf.ecp.view.spi.model.VView, org.eclipse.emf.ecp.ide.view.service.ViewModelEditorCallback)}
	* .
	*/
	@SuppressWarnings("unchecked")
	@Test
	public void testRegisterUnregisterViewModelEditor() {
	final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
	Map<VView, ViewModelEditorCallback> viewModelViewModelEditorMapping = null;
	try {
	viewModelViewModelEditorMapping = (Map<VView, ViewModelEditorCallback>) getFieldByName(registry,
	"viewModelViewModelEditorMapping");
	} catch (final Exception e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}

	assertFalse("", viewModelViewModelEditorMapping.containsKey(view));

	final ViewModelEditorCallback viewModelEditor = new ViewModelEditorCallback() {

	@Override
	public void signalEcoreOutOfSync() {
	// TODO Auto-generated method stub

	}

	@Override
	public void reloadViewModel() {
	// TODO Auto-generated method stub

	}
	};
	try {
	registry.registerViewModelEditor(view, viewModelEditor);
	} catch (final IOException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
	}

	assertTrue("", viewModelViewModelEditorMapping.containsKey(view));

	registry.unregisterViewModelEditor(view, viewModelEditor);

	assertFalse("", viewModelViewModelEditorMapping.containsKey(view));
	}

	@Test
	public void testRegisterViewModelEditorWithEcoreChange() throws IOException, InterruptedException {
	// setup
	final CountDownLatch latch = new CountDownLatch(1);
	final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
	final ViewModelEditorCallback callback = new ViewModelEditorCallback() {

	@Override
	public void signalEcoreOutOfSync() {
	latch.countDown();
	}

	@Override
	public void reloadViewModel() {
	// not tested
	}
	};
	for (final String ecorePath : view.getEcorePaths()) {
	registry.register(ecorePath, view);
	}
	registry.registerViewModelEditor(view, callback);

	// act
	final IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
	IProject project = null;
	for (final IProject p : projects) {
	if ("TestIDEViewRegistryProjectResources".equals(p.getName())) {
	project = p;
	}
	}
	final IFile file = project.getFile("task.ecore");
	final Resource resource = loadEcore(file);
	// calling save without a change will trigger listener
	resource.save(null);

	// assert
	assertTrue("signalEcoreOutOfSync has not been called", latch.await(1, TimeUnit.SECONDS));
	registry.unregisterViewModelEditor(view, callback);

	for (final String ecorePath : view.getEcorePaths()) {
	registry.unregister(ecorePath, view);
	}
	}

	@SuppressWarnings("unchecked")
	@Test
	public void testRegisterViewModel() throws Exception {
	final IDEViewModelRegistry registry = new IDEViewModelRegistryImpl();
	final Map<VView, String> viewModelviewModelFileMapping = (Map<VView, String>) getFieldByName(registry,
	"viewModelviewModelFileMapping");

	assertTrue(viewModelviewModelFileMapping.isEmpty());
	final String path = "path1234";
	registry.registerViewModel(view, path);
	assertTrue(viewModelviewModelFileMapping.containsKey(view));
	assertEquals(path, viewModelviewModelFileMapping.get(view));
	}

	private Object getFieldByName(Object instance, String fieldName) throws Exception {
	final Field f = instance.getClass().getDeclaredField(fieldName);
	f.setAccessible(true);

	return f.get(instance);
	}

	private static Resource loadEcore(IFile file) {
	final ResourceSet resourceSet = new ResourceSetImpl();
	final Map<String, Object> extensionMap = resourceSet.getResourceFactoryRegistry().getExtensionToFactoryMap();
	extensionMap.put("*", new XMIResourceFactoryImpl());
	final URI uri = URI.createPlatformResourceURI(file.getFullPath().toString(), false);
	return resourceSet.getResource(uri, true);
	}

	}