DynamicInstanceComparisonTest.java

/**
 * Copyright (c) 2012, 2013 Obeo.
 * 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:
 *     Obeo - initial API and implementation
 */
package org.eclipse.emf.compare.tests.fullcomparison;

import static org.junit.Assert.assertEquals;

import java.io.IOException;

import org.eclipse.emf.common.util.BasicMonitor;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.EMFCompare;
import org.eclipse.emf.compare.merge.BatchMerger;
import org.eclipse.emf.compare.merge.IBatchMerger;
import org.eclipse.emf.compare.merge.IMerger;
import org.eclipse.emf.compare.scope.DefaultComparisonScope;
import org.eclipse.emf.compare.scope.IComparisonScope;
import org.eclipse.emf.compare.tests.fullcomparison.data.dynamic.DynamicInstancesInputData;
import org.eclipse.emf.compare.tests.suite.AllTests;
import org.eclipse.emf.ecore.resource.Resource;
import org.junit.Before;
import org.junit.Test;

/**
 * A very basic test of comparing and merging dynamic instances.
 * 
 * @author <a href="mailto:cedric.brun@obeo.fr">Cedric Brun</a>
 */
@SuppressWarnings("nls")
public class DynamicInstanceComparisonTest {

	DynamicInstancesInputData data = new DynamicInstancesInputData();

	Resource left;

	Resource right;

	Resource origin;

	final IMerger.Registry mergerRegistry = IMerger.RegistryImpl.createStandaloneInstance();

	@Before
	public void setUp() throws Exception {
		AllTests.fillEMFRegistries();
		left = data.getCompareLeft();
		right = data.getCompareRight();
		origin = data.getCompareRight();
	}

	@Test
	public void compare2Ways() throws IOException {
		final IComparisonScope scope = new DefaultComparisonScope(left, right, null);
		Comparison result = EMFCompare.builder().build().compare(scope);
		assertEquals("We are supposed to have one difference (ADD/REMOVE of an instance)", 1,
				result.getDifferences().size());
	}

	@Test
	public void compare3Ways() throws IOException {
		final IComparisonScope scope = new DefaultComparisonScope(left, right, origin);
		Comparison result = EMFCompare.builder().build().compare(scope);
		assertEquals("We are supposed to have one difference (ADD/REMOVE of an instance)", 1,
				result.getDifferences().size());
	}

	@Test
	public void copyLeftToRight() throws IOException {
		final IComparisonScope scope = new DefaultComparisonScope(left, right, null);
		Comparison result = EMFCompare.builder().build().compare(scope);
		assertEquals("We are supposed to have one difference (ADD/REMOVE of an instance)", 1,
				result.getDifferences().size());

		final IBatchMerger merger = new BatchMerger(mergerRegistry);
		merger.copyAllLeftToRight(result.getDifferences(), new BasicMonitor());

		assertEquals("We are supposed to have no difference as we merged everything", 0,
				EMFCompare.builder().build().compare(scope).getDifferences().size());
	}

	@Test
	public void copyRightToLeft() throws IOException {
		final IComparisonScope scope = new DefaultComparisonScope(left, right, null);
		Comparison result = EMFCompare.builder().build().compare(scope);
		assertEquals("We are supposed to have one difference (ADD/REMOVE of an instance)", 1,
				result.getDifferences().size());

		final IBatchMerger merger = new BatchMerger(mergerRegistry);
		merger.copyAllRightToLeft(result.getDifferences(), new BasicMonitor());

		assertEquals("We are supposed to have no difference as we merged everything", 0,
				EMFCompare.builder().build().compare(scope).getDifferences().size());
	}

}