| /* |
| * Copyright (C) 2018, Google LLC. |
| * 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.dfs; |
| |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.COMPACT; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.GC; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.GC_REST; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.GC_TXN; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.INSERT; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.RECEIVE; |
| import static org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource.UNREACHABLE_GARBAGE; |
| import static org.eclipse.jgit.internal.storage.pack.PackExt.INDEX; |
| import static org.eclipse.jgit.internal.storage.pack.PackExt.PACK; |
| import static org.junit.Assert.assertEquals; |
| |
| import java.util.Comparator; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase.PackSource; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public final class DfsPackDescriptionTest { |
| private AtomicInteger counter; |
| |
| @Before |
| public void setUp() { |
| counter = new AtomicInteger(); |
| } |
| |
| @Test |
| public void objectLookupComparatorEqual() throws Exception { |
| DfsPackDescription a = create(RECEIVE); |
| a.setFileSize(PACK, 1); |
| a.setFileSize(INDEX, 1); |
| a.setLastModified(1); |
| a.setObjectCount(1); |
| a.setMaxUpdateIndex(1); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setFileSize(PACK, 1); |
| b.setFileSize(INDEX, 2); |
| b.setLastModified(1); |
| b.setObjectCount(1); |
| b.setMaxUpdateIndex(2); |
| |
| assertComparesEqual(DfsPackDescription.objectLookupComparator(), a, b); |
| } |
| |
| @Test |
| public void objectLookupComparatorPackSource() throws Exception { |
| DfsPackDescription a = create(COMPACT); |
| a.setFileSize(PACK, 2); |
| a.setLastModified(1); |
| a.setObjectCount(2); |
| |
| DfsPackDescription b = create(GC); |
| b.setFileSize(PACK, 1); |
| b.setLastModified(2); |
| b.setObjectCount(1); |
| |
| assertComparesLessThan(DfsPackDescription.objectLookupComparator(), a, b); |
| } |
| |
| @Test |
| public void objectLookupComparatorCustomPackSourceComparator() |
| throws Exception { |
| DfsPackDescription a = create(GC); |
| |
| DfsPackDescription b = create(COMPACT); |
| |
| assertComparesLessThan(DfsPackDescription.objectLookupComparator(), b, a); |
| assertComparesLessThan( |
| DfsPackDescription.objectLookupComparator( |
| new PackSource.ComparatorBuilder() |
| .add(GC) |
| .add(INSERT, RECEIVE, GC_REST, GC_TXN, UNREACHABLE_GARBAGE) |
| .add(COMPACT) |
| .build()), |
| a, b); |
| } |
| |
| @Test |
| public void objectLookupComparatorGcFileSize() throws Exception { |
| // a is older and smaller. |
| DfsPackDescription a = create(GC_REST); |
| a.setFileSize(PACK, 100); |
| a.setLastModified(1); |
| a.setObjectCount(2); |
| |
| // b is newer and larger. |
| DfsPackDescription b = create(GC_REST); |
| b.setFileSize(PACK, 200); |
| b.setLastModified(2); |
| b.setObjectCount(1); |
| |
| // Since they have the same GC type, tiebreaker is size, and a comes first. |
| assertComparesLessThan(DfsPackDescription.objectLookupComparator(), a, b); |
| } |
| |
| @Test |
| public void objectLookupComparatorNonGcLastModified() |
| throws Exception { |
| // a is older and smaller. |
| DfsPackDescription a = create(INSERT); |
| a.setFileSize(PACK, 100); |
| a.setLastModified(1); |
| a.setObjectCount(2); |
| |
| // b is newer and larger. |
| DfsPackDescription b = create(INSERT); |
| b.setFileSize(PACK, 200); |
| b.setLastModified(2); |
| b.setObjectCount(1); |
| |
| // Since they have the same type but not GC, tiebreaker is last modified, |
| // and b comes first. |
| assertComparesLessThan(DfsPackDescription.objectLookupComparator(), b, a); |
| } |
| |
| @Test |
| public void objectLookupComparatorObjectCount() throws Exception { |
| DfsPackDescription a = create(INSERT); |
| a.setObjectCount(1); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setObjectCount(2); |
| |
| assertComparesLessThan(DfsPackDescription.objectLookupComparator(), a, b); |
| } |
| |
| @Test |
| public void reftableComparatorEqual() throws Exception { |
| DfsPackDescription a = create(INSERT); |
| a.setFileSize(PACK, 100); |
| a.setObjectCount(1); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setFileSize(PACK, 200); |
| a.setObjectCount(2); |
| |
| assertComparesEqual(DfsPackDescription.reftableComparator(), a, b); |
| } |
| |
| @Test |
| public void reftableComparatorPackSource() throws Exception { |
| DfsPackDescription a = create(INSERT); |
| a.setMaxUpdateIndex(1); |
| a.setLastModified(1); |
| |
| DfsPackDescription b = create(GC); |
| b.setMaxUpdateIndex(2); |
| b.setLastModified(2); |
| |
| assertComparesLessThan(DfsPackDescription.reftableComparator(), b, a); |
| } |
| |
| @Test |
| public void reftableComparatorMaxUpdateIndex() throws Exception { |
| DfsPackDescription a = create(INSERT); |
| a.setMaxUpdateIndex(1); |
| a.setLastModified(2); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setMaxUpdateIndex(2); |
| b.setLastModified(1); |
| |
| assertComparesLessThan(DfsPackDescription.reftableComparator(), a, b); |
| } |
| |
| @Test |
| public void reftableComparatorLastModified() throws Exception { |
| DfsPackDescription a = create(INSERT); |
| a.setLastModified(1); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setLastModified(2); |
| |
| assertComparesLessThan(DfsPackDescription.reftableComparator(), a, b); |
| } |
| |
| @Test |
| public void reuseComparatorEqual() throws Exception { |
| DfsPackDescription a = create(RECEIVE); |
| a.setFileSize(PACK, 1); |
| a.setFileSize(INDEX, 1); |
| a.setLastModified(1); |
| a.setObjectCount(1); |
| a.setMaxUpdateIndex(1); |
| |
| DfsPackDescription b = create(INSERT); |
| b.setFileSize(PACK, 2); |
| b.setFileSize(INDEX, 2); |
| b.setLastModified(2); |
| b.setObjectCount(2); |
| b.setMaxUpdateIndex(2); |
| |
| assertComparesEqual(DfsPackDescription.reuseComparator(), a, b); |
| } |
| |
| @Test |
| public void reuseComparatorGcPackSize() throws Exception { |
| DfsPackDescription a = create(GC_REST); |
| a.setFileSize(PACK, 1); |
| a.setFileSize(INDEX, 1); |
| a.setLastModified(2); |
| a.setObjectCount(1); |
| a.setMaxUpdateIndex(1); |
| |
| DfsPackDescription b = create(GC_REST); |
| b.setFileSize(PACK, 2); |
| b.setFileSize(INDEX, 2); |
| b.setLastModified(1); |
| b.setObjectCount(2); |
| b.setMaxUpdateIndex(2); |
| |
| assertComparesLessThan(DfsPackDescription.reuseComparator(), b, a); |
| } |
| |
| private DfsPackDescription create(PackSource source) { |
| return new DfsPackDescription( |
| new DfsRepositoryDescription("repo"), |
| "pack_" + counter.incrementAndGet(), |
| source); |
| } |
| |
| private static <T> void assertComparesEqual( |
| Comparator<T> comparator, T o1, T o2) { |
| assertEquals( |
| "first object must compare equal to itself", |
| 0, comparator.compare(o1, o1)); |
| assertEquals( |
| "second object must compare equal to itself", |
| 0, comparator.compare(o2, o2)); |
| assertEquals( |
| "first object must compare equal to second object", |
| 0, comparator.compare(o1, o2)); |
| } |
| |
| private static <T> void assertComparesLessThan( |
| Comparator<T> comparator, T o1, T o2) { |
| assertEquals( |
| "first object must compare equal to itself", |
| 0, comparator.compare(o1, o1)); |
| assertEquals( |
| "second object must compare equal to itself", |
| 0, comparator.compare(o2, o2)); |
| assertEquals( |
| "first object must compare less than second object", |
| -1, comparator.compare(o1, o2)); |
| } |
| } |