| /* |
| * Copyright (C) 2008, Imran M Yousuf <imyousuf@smartitengineering.com> |
| * Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com> |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.eclipse.jgit.internal.storage.file; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import org.eclipse.jgit.errors.CorruptObjectException; |
| import org.eclipse.jgit.internal.storage.file.PackIndex.MutableEntry; |
| import org.eclipse.jgit.junit.JGitTestUtil; |
| import org.eclipse.jgit.junit.RepositoryTestCase; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class PackReverseIndexTest extends RepositoryTestCase { |
| |
| private PackIndex idx; |
| |
| private PackReverseIndex reverseIdx; |
| |
| /** |
| * Set up tested class instance, test constructor by the way. |
| */ |
| @Override |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| // index with both small (< 2^31) and big offsets |
| idx = PackIndex.open(JGitTestUtil.getTestResourceFile( |
| "pack-huge.idx")); |
| reverseIdx = new PackReverseIndex(idx); |
| } |
| |
| /** |
| * Test findObject() for all index entries. |
| */ |
| @Test |
| public void testFindObject() { |
| for (MutableEntry me : idx) |
| assertEquals(me.toObjectId(), reverseIdx.findObject(me.getOffset())); |
| } |
| |
| /** |
| * Test findObject() with illegal argument. |
| */ |
| @Test |
| public void testFindObjectWrongOffset() { |
| assertNull(reverseIdx.findObject(0)); |
| } |
| |
| /** |
| * Test findNextOffset() for all index entries. |
| * |
| * @throws CorruptObjectException |
| */ |
| @Test |
| public void testFindNextOffset() throws CorruptObjectException { |
| long offset = findFirstOffset(); |
| assertTrue(offset > 0); |
| for (int i = 0; i < idx.getObjectCount(); i++) { |
| long newOffset = reverseIdx.findNextOffset(offset, Long.MAX_VALUE); |
| assertTrue(newOffset > offset); |
| if (i == idx.getObjectCount() - 1) |
| assertEquals(newOffset, Long.MAX_VALUE); |
| else |
| assertEquals(newOffset, idx.findOffset(reverseIdx |
| .findObject(newOffset))); |
| offset = newOffset; |
| } |
| } |
| |
| /** |
| * Test findNextOffset() with wrong illegal argument as offset. |
| */ |
| @Test |
| public void testFindNextOffsetWrongOffset() { |
| try { |
| reverseIdx.findNextOffset(0, Long.MAX_VALUE); |
| fail("findNextOffset() should throw exception"); |
| } catch (CorruptObjectException x) { |
| // expected |
| } |
| } |
| |
| private long findFirstOffset() { |
| long min = Long.MAX_VALUE; |
| for (MutableEntry me : idx) |
| min = Math.min(min, me.getOffset()); |
| return min; |
| } |
| } |