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