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/*****************************************************************************
 * Copyright (c) 2013 CEA LIST.
 * 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
 *****************************************************************************/
package org.eclipse.papyrus.uml.tools.tests.tests;

import org.eclipse.core.resources.IProject;
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.util.EcoreUtil;
import org.eclipse.emf.transaction.RecordingCommand;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.papyrus.infra.core.resource.ModelSet;
import org.eclipse.papyrus.infra.emf.resource.DependencyManagementHelper;
import org.eclipse.papyrus.junit.utils.ModelUtils;
import org.eclipse.papyrus.junit.utils.PapyrusProjectUtils;
import org.eclipse.papyrus.junit.utils.ProjectUtils;
import org.eclipse.papyrus.junit.utils.tests.AbstractEditorTest;
import org.eclipse.papyrus.uml.tools.tests.Activator;
import org.eclipse.uml2.uml.Model;
import org.eclipse.uml2.uml.NamedElement;
import org.eclipse.uml2.uml.Profile;
import org.eclipse.uml2.uml.UMLPackage;
import org.eclipse.uml2.uml.util.UMLUtil;
import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;
import org.osgi.framework.Bundle;

/**
 * Test case for DependencyManagementHelper
 * 
 * @author Camille Letavernier
 * 
 */
public class DependencyManagementTest extends AbstractEditorTest {

	public final static String SOURCE_PATH = "resources/dependencyManagement/";

	//Switch from a library to a copy
	@Test
	public void testSimpleSwitch() throws Exception {
		//Create the project will 2 libraries and a client
		IProject project = ProjectUtils.createProject("dependencyManagement.simpleSwitch");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "model");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "library");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "copy-of-library");

		//Retrieve the URIs of each model
		final URI clientModelDiURI = URI.createPlatformResourceURI(project.getName() + "/model.di", true);
		final URI clientModelURI = URI.createPlatformResourceURI(project.getName() + "/model.uml", true);
		final URI sourceLibraryURI = URI.createPlatformResourceURI(project.getName() + "/library.uml", true);
		final URI targetLibraryURI = URI.createPlatformResourceURI(project.getName() + "/copy-of-library.uml", true);

		final ModelSet modelSet = ModelUtils.loadModelSet(clientModelDiURI, true);
		final TransactionalEditingDomain domain = ModelUtils.getEditingDomain(modelSet);

		//The modelset doesn't have any reference to the target library
		Assert.assertNull("The modelset should not have references to the target library", modelSet.getResource(targetLibraryURI, false));

		domain.getCommandStack().execute(new RecordingCommand(domain, "Edit model dependencies") {

			@Override
			protected void doExecute() {
				DependencyManagementHelper.updateDependencies(sourceLibraryURI, targetLibraryURI, modelSet, domain);
			}
		});


		EcoreUtil.resolveAll(modelSet);
		//The modelset now has some references to the target library
		Assert.assertNotNull("The modelset should have references to the target library", modelSet.getResource(targetLibraryURI, false));


		modelSet.save(new NullProgressMonitor());


		//
		// Reload
		//

		ModelSet reloadedModelSet = ModelUtils.loadModelSet(clientModelDiURI, true);

		//The reloaded modelset must have some references to the target library
		Resource clientModelResource = reloadedModelSet.getResource(clientModelURI, false);
		Assert.assertNotNull("The modelset should have references to the target library", clientModelResource);

		//The reloaded modelset doesn't have any reference to the source library
		Assert.assertNull("The modelset should not have references to the source library", reloadedModelSet.getResource(sourceLibraryURI, false));

		domain.dispose();
		modelSet.unload();

		ModelUtils.getEditingDomain(reloadedModelSet).dispose();
		reloadedModelSet.unload();

		project.delete(true, null);
	}

	//Switch from two different versions of a profile
	//Problem: !!Stereotypes are not references!! They are instances. After the switch, the new 
	//profile is correctly applied, but the applied Stereotypes are the ones from the initial Profile
	//
	//Current state: FAILS
	@Test
	public void testSwitchProfilesWithStereotypes() throws Exception {
		IProject project = ProjectUtils.createProject("dependencyManagement.switchProfiles");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "profiles/model");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "profiles/p1/profile1.profile");
		PapyrusProjectUtils.copyPapyrusModel(project, getBundle(), getSourcePath(), "profiles/p2/profile2.profile");

		final URI clientModelDiURI = URI.createPlatformResourceURI(project.getName() + "/profiles/model.di", true);
		final URI clientModelURI = URI.createPlatformResourceURI(project.getName() + "/profiles/model.uml", true);
		final URI sourceProfileURI = URI.createPlatformResourceURI(project.getName() + "/profiles/p1/profile1.profile.uml", true);
		final URI targetProfileURI = URI.createPlatformResourceURI(project.getName() + "/profiles/p2/profile2.profile.uml", true);

		final ModelSet modelSet = ModelUtils.loadModelSet(clientModelDiURI, true);
		final TransactionalEditingDomain domain = ModelUtils.getEditingDomain(modelSet);

		//The modelset doesn't have any reference to the target profile
		Assert.assertNull("The modelset should not have references to the target library", modelSet.getResource(targetProfileURI, false));

		Model rootModel = UMLUtil.load(modelSet, clientModelURI, UMLPackage.eINSTANCE.getModel());

		//Before the transformation, stereotypes from the source profile must be applied
		checkAppliedProfileAndStereotypes(modelSet, rootModel, sourceProfileURI);

		//Execute the transformation
		domain.getCommandStack().execute(new RecordingCommand(domain, "Edit profile applications") {

			@Override
			protected void doExecute() {
				DependencyManagementHelper.updateDependencies(sourceProfileURI, targetProfileURI, modelSet, domain);
			}

		});

		//After the transformation, stereotypes from the target profile must be applied 
		checkAppliedProfileAndStereotypes(modelSet, rootModel, targetProfileURI);

		//Save, reload, and check again
		modelSet.save(new NullProgressMonitor());

		ModelSet newModelSet = ModelUtils.loadModelSet(clientModelDiURI, true);

		Assert.assertNull("The modelset should not have references to the source library", newModelSet.getResource(sourceProfileURI, false));

		rootModel = UMLUtil.load(modelSet, clientModelURI, UMLPackage.eINSTANCE.getModel());

		//After the transformation + reload, stereotypes from the target profile must be applied
		checkAppliedProfileAndStereotypes(modelSet, rootModel, targetProfileURI);


		//Cleanup
		domain.dispose();
		modelSet.unload();

		ModelUtils.getEditingDomain(newModelSet).dispose();
		newModelSet.unload();

		project.delete(true, null);
	}

	private void checkAppliedProfileAndStereotypes(ModelSet modelSet, Model rootModel, URI expectedProfileURI) throws Exception {
		Profile expectedProfile = UMLUtil.load(modelSet, expectedProfileURI, UMLPackage.eINSTANCE.getProfile());

		Assert.assertEquals(expectedProfile, rootModel.getAppliedProfiles().get(0));

		NamedElement class1 = UMLUtil.findNamedElements(rootModel.eResource(), "model::Class1").iterator().next();
		NamedElement class2 = UMLUtil.findNamedElements(rootModel.eResource(), "model::Class2").iterator().next();
		NamedElement class3 = UMLUtil.findNamedElements(rootModel.eResource(), "model::Class3").iterator().next();

		NamedElement stereotype1 = UMLUtil.findNamedElements(expectedProfile.eResource(), "Profile::Stereotype1").iterator().next();
		NamedElement stereotype2 = UMLUtil.findNamedElements(expectedProfile.eResource(), "Profile::Stereotype2").iterator().next();
		NamedElement stereotype3 = UMLUtil.findNamedElements(expectedProfile.eResource(), "Profile::Stereotype3").iterator().next();

		Assert.assertEquals(stereotype1, class1.getAppliedStereotype("Profile::Stereotype1"));
		Assert.assertEquals(stereotype2, class2.getAppliedStereotype("Profile::Stereotype2"));
		Assert.assertEquals(stereotype3, class3.getAppliedStereotype("Profile::Stereotype3"));
	}

	//Switch from a library to an un-existing resource
	@Ignore("Todo")
	@Test
	public void testSwitchToProxy() throws Exception {
		//TODO
	}

	//Switch from a proxy to a library
	@Ignore("Todo")
	@Test
	public void testSwitchFromProxy() throws Exception {
		//TODO
	}

	//Switch from a library to a modified copy of this library
	@Ignore("Todo")
	@Test
	public void testSwitchToDifferentVersion() throws Exception {
		//TODO
	}

	@Override
	protected String getSourcePath() {
		return SOURCE_PATH;
	}

	@Override
	protected Bundle getBundle() {
		return Activator.getDefault().getBundle();
	}
}

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