| /* |
| * Copyright (C) 2018, Google LLC. and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| 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)); |
| } |
| } |