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/*
* Copyright (C) 2009-2010, 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 static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.TreeFormatter;
import org.junit.Test;
public class ObjectWalkTest extends RevWalkTestCase {
protected ObjectWalk objw;
@Override
protected RevWalk createRevWalk() {
return objw = new ObjectWalk(db);
}
@Test
public void testNoCommits() throws Exception {
assertNull(objw.next());
assertNull(objw.nextObject());
}
@Test
public void testTwoCommitsEmptyTree() throws Exception {
final RevCommit a = commit();
final RevCommit b = commit(a);
markStart(b);
assertCommit(b, objw.next());
assertCommit(a, objw.next());
assertNull(objw.next());
assertSame(tree(), objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testOneCommitOneTreeTwoBlob() throws Exception {
final RevBlob f0 = blob("0");
final RevBlob f1 = blob("1");
final RevTree t = tree(file("0", f0), file("1", f1), file("2", f1));
final RevCommit a = commit(t);
markStart(a);
assertCommit(a, objw.next());
assertNull(objw.next());
assertSame(t, objw.nextObject());
assertSame(f0, objw.nextObject());
assertSame(f1, objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testTwoCommitTwoTreeTwoBlob() throws Exception {
final RevBlob f0 = blob("0");
final RevBlob f1 = blob("1");
final RevBlob f2 = blob("0v2");
final RevTree ta = tree(file("0", f0), file("1", f1), file("2", f1));
final RevTree tb = tree(file("0", f2), file("1", f1), file("2", f1));
final RevCommit a = commit(ta);
final RevCommit b = commit(tb, a);
markStart(b);
assertCommit(b, objw.next());
assertCommit(a, objw.next());
assertNull(objw.next());
assertSame(tb, objw.nextObject());
assertSame(f2, objw.nextObject());
assertSame(f1, objw.nextObject());
assertSame(ta, objw.nextObject());
assertSame(f0, objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testTwoCommitDeepTree1() throws Exception {
final RevBlob f0 = blob("0");
final RevBlob f1 = blob("0v2");
final RevTree ta = tree(file("a/b/0", f0));
final RevTree tb = tree(file("a/b/1", f1));
final RevCommit a = commit(ta);
final RevCommit b = commit(tb, a);
markStart(b);
assertCommit(b, objw.next());
assertCommit(a, objw.next());
assertNull(objw.next());
assertSame(tb, objw.nextObject());
assertSame(get(tb, "a"), objw.nextObject());
assertSame(get(tb, "a/b"), objw.nextObject());
assertSame(f1, objw.nextObject());
assertSame(ta, objw.nextObject());
assertSame(get(ta, "a"), objw.nextObject());
assertSame(get(ta, "a/b"), objw.nextObject());
assertSame(f0, objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testTwoCommitDeepTree2() throws Exception {
final RevBlob f1 = blob("1");
final RevTree ta = tree(file("a/b/0", f1), file("a/c/q", f1));
final RevTree tb = tree(file("a/b/1", f1), file("a/c/q", f1));
final RevCommit a = commit(ta);
final RevCommit b = commit(tb, a);
markStart(b);
assertCommit(b, objw.next());
assertCommit(a, objw.next());
assertNull(objw.next());
assertSame(tb, objw.nextObject());
assertSame(get(tb, "a"), objw.nextObject());
assertSame(get(tb, "a/b"), objw.nextObject());
assertSame(f1, objw.nextObject());
assertSame(get(tb, "a/c"), objw.nextObject());
assertSame(ta, objw.nextObject());
assertSame(get(ta, "a"), objw.nextObject());
assertSame(get(ta, "a/b"), objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testCull() throws Exception {
final RevBlob f1 = blob("1");
final RevBlob f2 = blob("2");
final RevBlob f3 = blob("3");
final RevBlob f4 = blob("4");
final RevTree ta = tree(file("a/1", f1), file("c/3", f3));
final RevCommit a = commit(ta);
final RevTree tb = tree(file("a/1", f2), file("c/3", f3));
final RevCommit b1 = commit(tb, a);
final RevCommit b2 = commit(tb, b1);
final RevTree tc = tree(file("a/1", f4));
final RevCommit c1 = commit(tc, a);
final RevCommit c2 = commit(tc, c1);
markStart(b2);
markUninteresting(c2);
assertCommit(b2, objw.next());
assertCommit(b1, objw.next());
assertNull(objw.next());
assertTrue(a.has(RevFlag.UNINTERESTING));
assertTrue(ta.has(RevFlag.UNINTERESTING));
assertTrue(f1.has(RevFlag.UNINTERESTING));
assertTrue(f3.has(RevFlag.UNINTERESTING));
assertSame(tb, objw.nextObject());
assertSame(get(tb, "a"), objw.nextObject());
assertSame(f2, objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testEmptyTreeCorruption() throws Exception {
ObjectId bId = ObjectId
.fromString("abbbfafe3129f85747aba7bfac992af77134c607");
final RevTree tree_root, tree_A, tree_AB;
final RevCommit b;
try (ObjectInserter inserter = db.newObjectInserter()) {
ObjectId empty = inserter.insert(new TreeFormatter());
TreeFormatter A = new TreeFormatter();
A.append("A", FileMode.TREE, empty);
A.append("B", FileMode.TREE, empty);
ObjectId idA = inserter.insert(A);
TreeFormatter root = new TreeFormatter();
root.append("A", FileMode.TREE, idA);
root.append("B", FileMode.REGULAR_FILE, bId);
ObjectId idRoot = inserter.insert(root);
inserter.flush();
tree_root = objw.parseTree(idRoot);
tree_A = objw.parseTree(idA);
tree_AB = objw.parseTree(empty);
b = commit(tree_root);
}
markStart(b);
assertCommit(b, objw.next());
assertNull(objw.next());
assertSame(tree_root, objw.nextObject());
assertSame(tree_A, objw.nextObject());
assertSame(tree_AB, objw.nextObject());
assertSame(rw.lookupBlob(bId), objw.nextObject());
assertNull(objw.nextObject());
}
@Test
public void testSkipTreeWhenStartFromBlob() throws Exception {
final RevBlob f1 = blob("1");
objw.markStart(f1);
assertSame(f1, objw.nextObject());
objw.skipTree();
}
}
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