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/*
* Copyright (C) 2008, 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.treewalk;
import static org.eclipse.jgit.lib.FileMode.REGULAR_FILE;
import static org.eclipse.jgit.lib.FileMode.TREE;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.dircache.DirCacheBuilder;
import org.eclipse.jgit.dircache.DirCacheEntry;
import org.eclipse.jgit.dircache.DirCacheIterator;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.FileMode;
import org.junit.Test;
public class PostOrderTreeWalkTest extends RepositoryTestCase {
@Test
public void testInitialize_NoPostOrder() throws Exception {
try (TreeWalk tw = new TreeWalk(db)) {
assertFalse(tw.isPostOrderTraversal());
}
}
@Test
public void testInitialize_TogglePostOrder() throws Exception {
try (TreeWalk tw = new TreeWalk(db)) {
assertFalse(tw.isPostOrderTraversal());
tw.setPostOrderTraversal(true);
assertTrue(tw.isPostOrderTraversal());
tw.setPostOrderTraversal(false);
assertFalse(tw.isPostOrderTraversal());
}
}
@Test
public void testResetDoesNotAffectPostOrder() throws Exception {
try (TreeWalk tw = new TreeWalk(db)) {
tw.setPostOrderTraversal(true);
assertTrue(tw.isPostOrderTraversal());
tw.reset();
assertTrue(tw.isPostOrderTraversal());
tw.setPostOrderTraversal(false);
assertFalse(tw.isPostOrderTraversal());
tw.reset();
assertFalse(tw.isPostOrderTraversal());
}
}
@Test
public void testNoPostOrder() throws Exception {
final DirCache tree = db.readDirCache();
final DirCacheBuilder b = tree.builder();
b.add(makeFile("a"));
b.add(makeFile("b/c"));
b.add(makeFile("b/d"));
b.add(makeFile("q"));
b.finish();
assertEquals(4, tree.getEntryCount());
try (TreeWalk tw = new TreeWalk(db)) {
tw.setPostOrderTraversal(false);
tw.addTree(new DirCacheIterator(tree));
assertModes("a", REGULAR_FILE, tw);
assertModes("b", TREE, tw);
assertTrue(tw.isSubtree());
assertFalse(tw.isPostChildren());
tw.enterSubtree();
assertModes("b/c", REGULAR_FILE, tw);
assertModes("b/d", REGULAR_FILE, tw);
assertModes("q", REGULAR_FILE, tw);
}
}
@Test
public void testWithPostOrder_EnterSubtree() throws Exception {
final DirCache tree = db.readDirCache();
final DirCacheBuilder b = tree.builder();
b.add(makeFile("a"));
b.add(makeFile("b/c"));
b.add(makeFile("b/d"));
b.add(makeFile("q"));
b.finish();
assertEquals(4, tree.getEntryCount());
try (TreeWalk tw = new TreeWalk(db)) {
tw.setPostOrderTraversal(true);
tw.addTree(new DirCacheIterator(tree));
assertModes("a", REGULAR_FILE, tw);
assertModes("b", TREE, tw);
assertTrue(tw.isSubtree());
assertFalse(tw.isPostChildren());
tw.enterSubtree();
assertModes("b/c", REGULAR_FILE, tw);
assertModes("b/d", REGULAR_FILE, tw);
assertModes("b", TREE, tw);
assertTrue(tw.isSubtree());
assertTrue(tw.isPostChildren());
assertModes("q", REGULAR_FILE, tw);
}
}
@Test
public void testWithPostOrder_NoEnterSubtree() throws Exception {
final DirCache tree = db.readDirCache();
final DirCacheBuilder b = tree.builder();
b.add(makeFile("a"));
b.add(makeFile("b/c"));
b.add(makeFile("b/d"));
b.add(makeFile("q"));
b.finish();
assertEquals(4, tree.getEntryCount());
try (TreeWalk tw = new TreeWalk(db)) {
tw.setPostOrderTraversal(true);
tw.addTree(new DirCacheIterator(tree));
assertModes("a", REGULAR_FILE, tw);
assertModes("b", TREE, tw);
assertTrue(tw.isSubtree());
assertFalse(tw.isPostChildren());
assertModes("q", REGULAR_FILE, tw);
}
}
private DirCacheEntry makeFile(String path) throws Exception {
return createEntry(path, REGULAR_FILE);
}
private static void assertModes(final String path, final FileMode mode0,
final TreeWalk tw) throws Exception {
assertTrue("has " + path, tw.next());
assertEquals(path, tw.getPathString());
assertEquals(mode0, tw.getFileMode(0));
}
}
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