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/*
* Copyright (C) 2009, Google Inc. 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.revwalk;
import static org.junit.Assert.assertNull;
import org.junit.Test;
public class RevWalkCullTest extends RevWalkTestCase {
@Test
public void testProperlyCullAllAncestors1() throws Exception {
// Credit goes to Junio C Hamano <gitster@pobox.com> for this
// test case in git-core (t/t6009-rev-list-parent.sh)
//
// We induce a clock skew so two is dated before one.
//
final RevCommit a = commit();
final RevCommit b = commit(-2400, a);
final RevCommit c = commit(b);
final RevCommit d = commit(c);
markStart(a);
markUninteresting(d);
assertNull(rw.next());
}
@Test
public void testProperlyCullAllAncestors2() throws Exception {
// Despite clock skew on c1 being very old it should not
// produce, neither should a or b, or any part of that chain.
//
final RevCommit a = commit();
final RevCommit b = commit(a);
final RevCommit c1 = commit(-5, b);
final RevCommit c2 = commit(10, b);
final RevCommit d = commit(c1, c2);
markStart(d);
markUninteresting(c1);
assertCommit(d, rw.next());
assertCommit(c2, rw.next());
assertNull(rw.next());
}
@Test
public void testProperlyCullAllAncestors_LongHistory() throws Exception {
RevCommit a = commit();
RevCommit b = commit(a);
for (int i = 0; i < 24; i++) {
b = commit(b);
if ((i & 2) == 0)
markUninteresting(b);
}
final RevCommit c = commit(b);
// TestRepository eagerly parses newly created objects. The current rw
// is caching that parsed state. To verify that RevWalk itself is lazy,
// set up a new one.
rw.close();
rw = createRevWalk();
RevCommit a2 = rw.lookupCommit(a);
markStart(c);
markUninteresting(b);
assertCommit(c, rw.next());
assertNull(rw.next());
// We should have aborted before we got back so far that "a"
// would be parsed. Thus, its parents shouldn't be allocated.
//
assertNull(a2.getParents());
}
}
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