/*
* Copyright 2014 Daniel Bechler
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package de.danielbechler.diff.issues.issue15;
import de.danielbechler.diff.ObjectDiffer;
import de.danielbechler.diff.ObjectDifferBuilder;
import de.danielbechler.diff.mock.ObjectWithCircularReference;
import de.danielbechler.diff.node.DiffNode;
import de.danielbechler.diff.node.PrintingVisitor;
import de.danielbechler.diff.path.NodePath;
import org.fest.assertions.api.Assertions;
import org.testng.annotations.Test;
import static de.danielbechler.diff.helper.NodeAssertions.assertThat;
/**
* @author Daniel Bechler
*/
public class CircularReferenceIT
{
@Test
public void testCircularReference()
{
final ObjectWithCircularReference workingA = new ObjectWithCircularReference("a");
final ObjectWithCircularReference workingB = new ObjectWithCircularReference("b");
workingA.setReference(workingB);
workingB.setReference(workingA);
final ObjectWithCircularReference baseA = new ObjectWithCircularReference("a");
final ObjectWithCircularReference baseB = new ObjectWithCircularReference("c");
baseA.setReference(baseB);
baseB.setReference(baseA);
final DiffNode root = ObjectDifferBuilder.buildDefault().compare(workingA, baseA);
assertThat(root).child("reference", "reference").isCircular();
assertThat(root).child("reference", "reference")
.hasCircularStartPathEqualTo(NodePath.withRoot());
Assertions.assertThat(root.canonicalGet(workingA))
.isSameAs(root.getChild("reference").getChild("reference").canonicalGet(workingA));
Assertions.assertThat(root.getChild("reference").getChild("reference").getCircleStartNode())
.isSameAs(root);
}
@Test
public void testCircularReferenceShouldBeAddedWhenEnabledInConfiguration()
{
final ObjectWithCircularReference workingA = new ObjectWithCircularReference("a");
final ObjectWithCircularReference workingB = new ObjectWithCircularReference("b");
final ObjectWithCircularReference workingC = new ObjectWithCircularReference("c");
workingA.setReference(workingB);
workingB.setReference(workingC);
workingC.setReference(workingA);
final ObjectWithCircularReference baseA = new ObjectWithCircularReference("a");
final ObjectWithCircularReference baseB = new ObjectWithCircularReference("b");
final ObjectWithCircularReference baseC = new ObjectWithCircularReference("d");
baseA.setReference(baseB);
baseB.setReference(baseC);
baseC.setReference(baseA);
final ObjectDiffer objectDiffer = ObjectDifferBuilder.buildDefault();
// objectDiffer.getConfiguration().withoutCircularNodes();
final DiffNode root = objectDiffer.compare(workingA, baseA);
root.visit(new PrintingVisitor(workingA, baseA));
assertThat(root).child("reference", "reference", "reference").isCircular();
}
}