| /* |
| * 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()); |
| } |
| } |