RewriteGeneratorTest: Introduce test cases for the RewriteGenerator
Bug: 577948 Signed-off-by: Simon Sohrt <sohrt@his.de> Change-Id: I5af1a43d49379e2417611eaacdd5f06be8147bc4
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/*
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* Copyright (C) 2023, HIS eG
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Distribution License v. 1.0 which is available at
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* https://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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package org.eclipse.jgit.revwalk;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import org.junit.Test;
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public class RewriteGeneratorTest extends RevWalkTestCase {
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@Test
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public void testRewriteGeneratorDoesNotExhaustPreviousGenerator()
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throws Exception {
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RevCommit a = commit();
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a.flags |= RevWalk.TREE_REV_FILTER_APPLIED;
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RevCommit b = commit(a);
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LIFORevQueue q = new LIFORevQueue();
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q.add(a);
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q.add(b);
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/*
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* Since the TREE_REV_FILTER has been applied to commit a and the
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* REWRITE flag has not been applied to commit a, the RewriteGenerator
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* must not rewrite the parent of b and thus must not call the previous
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* generator (since b already has its correct parent).
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*/
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RewriteGenerator rewriteGenerator = new RewriteGenerator(q);
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rewriteGenerator.next();
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assertNotNull(
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"Previous generator was unnecessarily exhausted by RewriteGenerator",
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q.next());
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}
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@Test
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public void testRewriteGeneratorRewritesParent() throws Exception {
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RevCommit a = commit();
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a.flags |= RevWalk.TREE_REV_FILTER_APPLIED;
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a.flags |= RevWalk.REWRITE;
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RevCommit b = commit(a);
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assertEquals(1, b.getParentCount());
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LIFORevQueue q = new LIFORevQueue();
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/*
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* We are only adding commit b (and not a), because PendingGenerator
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* should never emit a commit that has the REWRITE flag set.
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*/
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q.add(b);
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RewriteGenerator rewriteGenerator = new RewriteGenerator(q);
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RevCommit returnedB = rewriteGenerator.next();
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assertEquals(b.getId(), returnedB.getId());
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assertEquals(0, returnedB.getParentCount());
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}
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}
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