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/*
* Copyright (C) 2012, Christian Halstrick <christian.halstrick@sap.com> 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.file;
import java.io.IOException;
import org.eclipse.jgit.internal.storage.file.GC.RepoStatistics;
import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.junit.TestRepository.CommitBuilder;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.junit.After;
import org.junit.Before;
public abstract class GcTestCase extends LocalDiskRepositoryTestCase {
protected TestRepository<FileRepository> tr;
protected FileRepository repo;
protected GC gc;
protected RepoStatistics stats;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
repo = createWorkRepository();
tr = new TestRepository<>(repo, new RevWalk(repo),
mockSystemReader);
gc = new GC(repo);
}
@Override
@After
public void tearDown() throws Exception {
tr.close();
super.tearDown();
}
/**
* Create a chain of commits of given depth.
* <p>
* Each commit contains one file named "a" containing the index of the
* commit in the chain as its content. The created commit chain is
* referenced from any ref.
* <p>
* A chain of depth = N will create 3*N objects in Gits object database. For
* each depth level three objects are created: the commit object, the
* top-level tree object and a blob for the content of the file "a".
*
* @param depth
* the depth of the commit chain.
* @return the commit that is the tip of the commit chain
* @throws Exception
* if an error occurred
*/
protected RevCommit commitChain(int depth) throws Exception {
if (depth <= 0)
throw new IllegalArgumentException("Chain depth must be > 0");
CommitBuilder cb = tr.commit();
RevCommit tip;
do {
--depth;
tip = cb.add("a", "" + depth).message("" + depth).create();
cb = cb.child();
} while (depth > 0);
return tip;
}
/**
* Create a chain of commits of given depth with given number of added files
* per commit.
* <p>
* Each commit contains {@code files} files as its content. The created
* commit chain is referenced from any ref.
* <p>
* A chain will create {@code (2 + files) * depth} objects in Gits object
* database. For each depth level the following objects are created: the
* commit object, the top-level tree object and @code files} blobs for the
* content of the file "a".
*
* @param depth
* the depth of the commit chain.
* @param width
* number of files added per commit
* @return the commit that is the tip of the commit chain
* @throws Exception
* if an error occurred
*/
protected RevCommit commitChain(int depth, int width) throws Exception {
if (depth <= 0) {
throw new IllegalArgumentException("Chain depth must be > 0");
}
if (width <= 0) {
throw new IllegalArgumentException("Number of files per commit must be > 0");
}
CommitBuilder cb = tr.commit();
RevCommit tip = null;
do {
--depth;
for (int i=0; i < width; i++) {
String id = depth + "-" + i;
cb.add("a" + id, id).message(id);
}
tip = cb.create();
cb = cb.child();
} while (depth > 0);
return tip;
}
protected long lastModified(AnyObjectId objectId) {
return repo.getFS()
.lastModifiedInstant(repo.getObjectDatabase().fileFor(objectId))
.toEpochMilli();
}
protected static void fsTick() throws InterruptedException, IOException {
RepositoryTestCase.fsTick(null);
}
}
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