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RewriteGeneratorTest: Introduce test cases for the RewriteGenerator 

Bug: 577948
Signed-off-by: Simon Sohrt <sohrt@his.de>
Change-Id: I5af1a43d49379e2417611eaacdd5f06be8147bc4
This commit is contained in:
Simon Sohrt 2023-04-28 13:45:15 +02:00 committed by Matthias Sohn
parent 73f9f55e3b
commit e6f216119f
1 changed files with 63 additions and 0 deletions
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org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RewriteGeneratorTest.java Normal file
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/*
* Copyright (C) 2023, HIS eG
*
* 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.assertEquals;
import static org.junit.Assert.assertNotNull;
import org.junit.Test;
public class RewriteGeneratorTest extends RevWalkTestCase {
@Test
public void testRewriteGeneratorDoesNotExhaustPreviousGenerator()
throws Exception {
RevCommit a = commit();
a.flags |= RevWalk.TREE_REV_FILTER_APPLIED;
RevCommit b = commit(a);
LIFORevQueue q = new LIFORevQueue();
q.add(a);
q.add(b);
/*
* Since the TREE_REV_FILTER has been applied to commit a and the
* REWRITE flag has not been applied to commit a, the RewriteGenerator
* must not rewrite the parent of b and thus must not call the previous
* generator (since b already has its correct parent).
*/
RewriteGenerator rewriteGenerator = new RewriteGenerator(q);
rewriteGenerator.next();
assertNotNull(
"Previous generator was unnecessarily exhausted by RewriteGenerator",
q.next());
}
@Test
public void testRewriteGeneratorRewritesParent() throws Exception {
RevCommit a = commit();
a.flags |= RevWalk.TREE_REV_FILTER_APPLIED;
a.flags |= RevWalk.REWRITE;
RevCommit b = commit(a);
assertEquals(1, b.getParentCount());
LIFORevQueue q = new LIFORevQueue();
/*
* We are only adding commit b (and not a), because PendingGenerator
* should never emit a commit that has the REWRITE flag set.
*/
q.add(b);
RewriteGenerator rewriteGenerator = new RewriteGenerator(q);
RevCommit returnedB = rewriteGenerator.next();
assertEquals(b.getId(), returnedB.getId());
assertEquals(0, returnedB.getParentCount());
}
}