/*******************************************************************************
 * Copyright (c) 2007, 2010 BMW Car IT, Technische Universitaet Muenchen, and others.
 * 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:
 * BMW Car IT - Initial API and implementation
 * Technische Universitaet Muenchen - Major refactoring and extension
 *******************************************************************************/
package org.eclipse.emf.edapt.history.reconstruction;

// CB TODO Migrate.
// import org.eclipse.emf.compare.diff.metamodel.DiffElement;
// import org.eclipse.emf.compare.diff.metamodel.DiffGroup;
// import org.eclipse.emf.compare.diff.metamodel.DiffModel;
// import org.eclipse.emf.compare.diff.metamodel.DiffResourceSet;
// import org.eclipse.emf.compare.diff.service.DiffService;
// import org.eclipse.emf.compare.match.metamodel.MatchModel;
// import org.eclipse.emf.compare.match.service.MatchService;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.EcoreUtil;

import junit.framework.AssertionFailedError;

/**
 * Assertions for dealing with models.
 *
 * @author herrmama
 * @author $Author$
 * @version $Rev$
 * @levd.rating RED Rev:
 */
public class ModelAssert {

	/** Assert that two models are equal. */

	// CB Migrate
	// public static void assertEquals(EObject expected, EObject actual,
	// String message) {
	//
	// DiffModel diff = diff(expected, actual);
	// boolean empty = numberOfChanges(diff) == 0;
	// if (!empty) {
	// if (message == null) {
	// message = "models are not equal";
	// }
	// saveDiffModel(expected, diff);
	// throw new AssertionFailedError(message);
	// }
	// }

	/** Save the difference model. */

	// CB Migrate
	// private static void saveDiffModel(EObject expected, DiffModel diff) {
	// try {
	// URI expectedURI = expected.eResource().getURI();
	// String name = expectedURI.trimFileExtension().lastSegment()
	// + "_diff.xmi";
	// URI uri = expectedURI.trimSegments(1).appendFragment(name);
	// ResourceSet resourceSet = new ResourceSetImpl();
	// Resource resource = resourceSet.createResource(uri);
	// resource.getContents().add(diff);
	// ResourceUtils.saveResourceSet(resourceSet);
	// } catch (IOException e) {
	// System.err.println(e);
	// }
	// }

	/** Assert that two models are equal. */
	public static void assertEquals(EObject expected, EObject actual) {

		// CB Migrate.
		System.out.println("Model Assert: Assert equality"); //$NON-NLS-1$
		// assertEquals(expected, actual, null);
	}

	/**
	 * Assert that there are only a certain number of changes between two
	 * models.
	 */
	public static void assertDifference(EObject expected, EObject actual,
		int expectedNumber, String message) {
		if (expectedNumber != 0) {
			throw new AssertionFailedError("Not implemented"); //$NON-NLS-1$

		}
		if (!EcoreUtil.equals(expected, actual)) {
			throw new AssertionFailedError(message);
		}
	}

	/**
	 * Assert that there are only a certain number of changes between two
	 * models.
	 */
	public static void assertDifference(EObject expected, EObject actual,
		int expectedNumber) {
		assertDifference(expected, actual, expectedNumber, null);
	}

	/** Calculate the difference between two models. */
	// CB Migrate.
	// private static DiffModel diff(EObject expected, EObject actual) {
	//
	//
	// try {
	// MatchModel match = MatchService.doMatch(expected, actual,
	// Collections.<String, Object> emptyMap());
	// // Computing differences
	// DiffModel diff = DiffService.doDiff(match, false);
	// // Filter differences
	// IDiffModelFilter filter = DiffModelFilterUtils.and(
	// DiffModelOrderFilter.INSTANCE,
	// DiffModelResourceFilter.INSTANCE);
	// DiffModelFilterUtils.filter(diff, filter);
	// return diff;
	// } catch (InterruptedException e) {
	// return null;
	// }
	// }

	/** Determine the number of changes denoted by a difference model. */
	// CB Migrate
	// public static int numberOfChanges(DiffModel diff) {
	// int number = 0;
	// for (Iterator<EObject> i = diff.eAllContents(); i.hasNext();) {
	// EObject element = i.next();
	// if (element instanceof DiffElement
	// && !(element instanceof DiffGroup)) {
	// number++;
	// }
	// }
	// return number;
	// }

	/** Determine the number of changes denoted by a difference model. */
	// CB Migrate
	// public static int numberOfChanges(DiffResourceSet diff) {
	// int number = 0;
	// for (Iterator<EObject> i = diff.eAllContents(); i.hasNext();) {
	// EObject element = i.next();
	// if (element instanceof DiffElement
	// && !(element instanceof DiffGroup)) {
	// number++;
	// }
	// }
	// return number;
	// }
}