plugins/org.eclipse.emf.compare.uml2.tests/src/org/eclipse/emf/compare/uml2/tests/dependency/ChangeDependencyTest.java

/*******************************************************************************
 * 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.uml2.tests.dependency;

import static com.google.common.base.Predicates.and;
import static com.google.common.base.Predicates.instanceOf;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.addedToReference;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.ofKind;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.removedFromReference;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import com.google.common.base.Predicate;
import com.google.common.collect.Iterators;

import java.io.IOException;
import java.util.List;

import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.Diff;
import org.eclipse.emf.compare.DifferenceKind;
import org.eclipse.emf.compare.uml2.internal.DirectedRelationshipChange;
import org.eclipse.emf.compare.uml2.tests.AbstractUMLInputData;
import org.eclipse.emf.compare.uml2.tests.AbstractUMLTest;
import org.eclipse.emf.compare.uml2.tests.dependency.data.DependencyInputData;
import org.eclipse.emf.ecore.resource.Resource;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

@SuppressWarnings("nls")
public class ChangeDependencyTest extends AbstractUMLTest {

	private DependencyInputData input = new DependencyInputData();

	@BeforeClass
	public static void setupClass() {
		fillRegistries();
	}

	@AfterClass
	public static void teardownClass() {
		resetRegistries();
	}

	@Test
	public void testA30UseCase() throws IOException {
		final Resource left = input.getA3Left();
		final Resource right = input.getA3Right();

		final Comparison comparison = compare(left, right);
		testAB1(TestKind.ADD, comparison);

		testMergeLeftToRight(left, right, null);
		testMergeRightToLeft(left, right, null);
	}

	@Test
	public void testA31UseCase() throws IOException {
		final Resource left = input.getA3Left();
		final Resource right = input.getA3Right();

		final Comparison comparison = compare(right, left);
		testAB1(TestKind.DELETE, comparison);

		testMergeLeftToRight(right, left, null);
		testMergeRightToLeft(right, left, null);
	}

	@Test
	public void testA30UseCase3way() throws IOException {
		final Resource left = input.getA3Left();
		final Resource right = input.getA3Right();

		final Comparison comparison = compare(left, right, right);
		testAB1(TestKind.ADD, comparison);

		testMergeLeftToRight(left, right, right);
		testMergeRightToLeft(left, right, right);
	}

	@Test
	public void testA31UseCase3way() throws IOException {
		final Resource left = input.getA3Left();
		final Resource right = input.getA3Right();

		final Comparison comparison = compare(left, right, left);
		testAB1(TestKind.DELETE, comparison);

		testMergeLeftToRight(left, right, left);
		testMergeRightToLeft(left, right, left);
	}

	private void testAB1(TestKind kind, final Comparison comparison) {
		final List<Diff> differences = comparison.getDifferences();

		// We should have no less and no more than 1 differences
		assertEquals(1, differences.size());

		Predicate<? super Diff> addSupplierInDependencyDescription = null;

		if (kind.equals(TestKind.DELETE)) {
			addSupplierInDependencyDescription = removedFromReference("model.Dependency0", "supplier",
					"model.Class2");
		} else {
			addSupplierInDependencyDescription = addedToReference("model.Dependency0", "supplier",
					"model.Class2");
		}

		final Diff addSupplierInDependency = Iterators.find(differences.iterator(),
				addSupplierInDependencyDescription);

		assertNotNull(addSupplierInDependency);

		// CHECK EXTENSION
		// No extension anymore
		assertEquals(0, count(differences, instanceOf(DirectedRelationshipChange.class)));
		Diff changeUMLDependency = Iterators.find(differences.iterator(),
				and(instanceOf(DirectedRelationshipChange.class), ofKind(DifferenceKind.CHANGE)), null);
		assertNull(changeUMLDependency);
		// assertNotNull(changeUMLDependency);
		// assertEquals(1, changeUMLDependency.getRefinedBy().size());
		// assertTrue(changeUMLDependency.getRefinedBy().contains(addSupplierInDependency));

		// CHECK REQUIREMENT
		assertEquals(0, addSupplierInDependency.getRequires().size());

		// CHECK EQUIVALENCE
		assertEquals(0, comparison.getEquivalences().size());

		testIntersections(comparison);

	}

	@Override
	protected AbstractUMLInputData getInput() {
		return input;
	}

}