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/*******************************************************************************
* Copyright (c) 2012, 2014 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.merge;
import static com.google.common.base.Predicates.and;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.changedAttribute;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.fromSide;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import com.google.common.collect.Iterators;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.Diff;
import org.eclipse.emf.compare.DifferenceSource;
import org.eclipse.emf.compare.EMFCompare;
import org.eclipse.emf.compare.merge.AbstractMerger;
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.merge.data.IndividualDiffInputData;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.junit.Test;
@SuppressWarnings("nls")
public class ExtensionMergeTest {
private IndividualDiffInputData input = new IndividualDiffInputData();
@Test
public void testInstantiationMerger() throws IOException {
final Resource left = input.getAttributeMonoChangeLeft();
final Resource right = input.getAttributeMonoChangeRight();
final IComparisonScope scope = new DefaultComparisonScope(left, right, null);
Comparison comparison = EMFCompare.builder().build().compare(scope);
final List<Diff> differences = comparison.getDifferences();
assertEquals(1, differences.size());
final String featureName = "singleValuedAttribute";
final Diff diff = Iterators.find(differences.iterator(), and(fromSide(DifferenceSource.LEFT),
changedAttribute("root.origin", featureName, "originValue", "leftValue")));
IMerger merger = getMerger(IMerger.RegistryImpl.createStandaloneInstance(), diff,
AbstractMerger.class);
merger.copyLeftToRight(diff, null);
final EObject originNode = getNodeNamed(right, "origin");
assertNotNull(originNode);
final EStructuralFeature feature = originNode.eClass().getEStructuralFeature(featureName);
assertNotNull(feature);
assertEquals("leftValue", originNode.eGet(feature));
comparison = EMFCompare.builder().build().compare(scope);
assertEquals(0, comparison.getDifferences().size());
}
public static IMerger getMerger(final IMerger.Registry registry, final Diff diff,
final Class<? extends IMerger> expectedMerger) {
IMerger merger = registry.getHighestRankingMerger(diff);
assertNotNull("No merger has been found for the diff: " + diff, merger);
assertTrue("The found merger is not the expexted Merger", expectedMerger.isInstance(merger));
return merger;
}
private EObject getNodeNamed(Resource res, String name) {
final Iterator<EObject> iterator = EcoreUtil.getAllProperContents(res, false);
while (iterator.hasNext()) {
final EObject next = iterator.next();
final EStructuralFeature nameFeature = next.eClass().getEStructuralFeature("name");
if (nameFeature != null && name.equals(next.eGet(nameFeature))) {
return next;
}
}
return null;
}
}
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