| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * 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 com.intellij.util.diff; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * @author dyoma |
| */ |
| public class IntLCSTest extends TestCase { |
| public void testDiag() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 2, 3}, new int[]{1, 2, 3}, 0); |
| assertNull(change); |
| } |
| |
| public void testOneAtBegging() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 2}, new int[]{1, 3}, 2); |
| checkLastChange(change, 1, 1, 1, 1); |
| } |
| |
| public void testOneAntEnd() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 3}, new int[]{2, 3}, 2); |
| checkLastChange(change, 0, 0, 1, 1); |
| } |
| |
| public void testOneOverAtEnd() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 2}, new int[]{1, 2, 3}, 1); |
| checkLastChange(change, 2, 2, 1, 0); |
| } |
| |
| public void testOneOverAtBegging() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 2, 3}, new int[]{2, 3}, 1); |
| checkLastChange(change, 0, 0, 0, 1); |
| } |
| |
| public void testOneTail() throws FilesTooBigForDiffException { |
| assertEquals(1, new IntLCS(new int[]{1, 2}, new int[]{1, 2, 3}).execute()); |
| } |
| |
| public void testSingleMiddle() throws FilesTooBigForDiffException { |
| Diff.Change change = buildChange(new int[]{1, 2, 3}, new int[]{4, 2, 5}, 4); |
| checkChange(change, 0, 0, 1, 1); |
| checkLastChange(change.link, 2, 2, 1, 1); |
| } |
| |
| public void testAbsolutelyDifferent() throws FilesTooBigForDiffException { |
| assertEquals(4, new IntLCS(new int[]{1, 2}, new int[]{3, 4}).execute()); |
| assertEquals(6, new IntLCS(new int[]{1, 2, 3}, new int[]{4, 5, 6}).execute()); |
| } |
| |
| private Diff.Change buildChange(int[] first, int[] second, int expectedNonDiags) throws FilesTooBigForDiffException { |
| IntLCS intLCS = new IntLCS(first, second); |
| assertEquals(expectedNonDiags, intLCS.execute()); |
| Reindexer reindexer = new Reindexer(); |
| reindexer.idInit(first.length, second.length); |
| Diff.ChangeBuilder builder = new Diff.ChangeBuilder(0); |
| reindexer.reindex(intLCS.getChanges(), builder); |
| return builder.getFirstChange(); |
| } |
| |
| public static void checkChange(Diff.Change change, int line0, int line1, int inserted, int deleted) { |
| assertNotNull("Expected not null change", change); |
| String message = change.toString(); |
| assertEquals(message + " line0:", line0, change.line0); |
| assertEquals(message + " line1:", line1, change.line1); |
| assertEquals(message + " insert:", inserted, change.inserted); |
| assertEquals(message + " delete:", deleted, change.deleted); |
| } |
| |
| public static void checkLastChange(Diff.Change change, int line0, int line1, int inserted, int deleted) { |
| checkChange(change, line0, line1, inserted, deleted); |
| assertNull("Expected last change", change.link); |
| } |
| } |