org.eclipse.jgit.test/tst/org/eclipse/jgit/api/GarbageCollectCommandTest.java

/*
 * Copyright (C) 2012, Matthias Sohn <matthias.sohn@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.api;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.io.IOException;
import java.time.Instant;
import java.util.Properties;

import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.GcConfig;
import org.eclipse.jgit.lib.GcConfig.PackRefsMode;
import org.eclipse.jgit.util.GitTimeParser;
import org.junit.Before;
import org.junit.Test;

public class GarbageCollectCommandTest extends RepositoryTestCase {
	private Git git;

	@Override
	@Before
	public void setUp() throws Exception {
		super.setUp();
		git = new Git(db);
		String path = "a.txt";
		writeTrashFile(path, "content");
		git.add().addFilepattern(path).call();
		git.commit().setMessage("commit").call();
	}

	@Test
	public void testPackRefs() throws Exception {
		assertTrue(hasLooseRef(git));

		// by default, refs should be packed
		git.gc().call();
		assertFalse(hasLooseRef(git));

		// now create a loose ref again
		git.branchCreate().setName("foo").call();
		assertTrue(hasLooseRef(git));

		git.gc().setGcConfig(new GcConfig(PackRefsMode.FALSE)).call();
		assertTrue(hasLooseRef(git));
	}

	@Test
	public void testGConeCommit() throws Exception {
		Instant expireNow = GitTimeParser.parseInstant("now");
		Properties res = git.gc().setExpire(expireNow).call();
		assertTrue(res.size() == 8);
	}

	@Test
	public void testGCmoreCommits() throws Exception {
		writeTrashFile("a.txt", "a couple of words for gc to pack");
		writeTrashFile("b.txt", "a couple of words for gc to pack 2");
		writeTrashFile("c.txt", "a couple of words for gc to pack 3");
		git.commit().setAll(true).setMessage("commit2").call();
		writeTrashFile("a.txt", "a couple of words for gc to pack more");
		writeTrashFile("b.txt", "a couple of words for gc to pack more 2");
		writeTrashFile("c.txt", "a couple of words for gc to pack more 3");
		git.commit().setAll(true).setMessage("commit3").call();
		Instant expireNow = GitTimeParser.parseInstant("now");
		Properties res = git.gc().setExpire(expireNow).call();
		assertTrue(res.size() == 8);
	}

	private static boolean hasLooseRef(Git git) throws IOException {
		return git.getRepository().getRefDatabase().getRefs().stream()
				.filter(r -> !r.isSymbolic())
				.anyMatch(r -> r.getStorage().isLoose());
	}
}