| /* |
| * 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.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertNotNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| |
| import org.eclipse.jgit.junit.RepositoryTestCase; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.ObjectReader; |
| import org.junit.Test; |
| |
| public class EmptyTreeIteratorTest extends RepositoryTestCase { |
| @Test |
| public void testAtEOF() throws Exception { |
| final EmptyTreeIterator etp = new EmptyTreeIterator(); |
| assertTrue(etp.first()); |
| assertTrue(etp.eof()); |
| } |
| |
| @Test |
| public void testCreateSubtreeIterator() throws Exception { |
| final EmptyTreeIterator etp = new EmptyTreeIterator(); |
| try (ObjectReader reader = db.newObjectReader()) { |
| final AbstractTreeIterator sub = etp.createSubtreeIterator(reader); |
| assertNotNull(sub); |
| assertTrue(sub.first()); |
| assertTrue(sub.eof()); |
| assertTrue(sub instanceof EmptyTreeIterator); |
| } |
| } |
| |
| @Test |
| public void testEntryObjectId() throws Exception { |
| final EmptyTreeIterator etp = new EmptyTreeIterator(); |
| assertSame(ObjectId.zeroId(), etp.getEntryObjectId()); |
| assertNotNull(etp.idBuffer()); |
| assertEquals(0, etp.idOffset()); |
| assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer())); |
| } |
| |
| @Test |
| public void testNextDoesNothing() throws Exception { |
| final EmptyTreeIterator etp = new EmptyTreeIterator(); |
| etp.next(1); |
| assertTrue(etp.first()); |
| assertTrue(etp.eof()); |
| assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer())); |
| |
| etp.next(1); |
| assertTrue(etp.first()); |
| assertTrue(etp.eof()); |
| assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer())); |
| } |
| |
| @Test |
| public void testBackDoesNothing() throws Exception { |
| final EmptyTreeIterator etp = new EmptyTreeIterator(); |
| etp.back(1); |
| assertTrue(etp.first()); |
| assertTrue(etp.eof()); |
| assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer())); |
| |
| etp.back(1); |
| assertTrue(etp.first()); |
| assertTrue(etp.eof()); |
| assertEquals(ObjectId.zeroId(), ObjectId.fromRaw(etp.idBuffer())); |
| } |
| |
| @Test |
| public void testStopWalkCallsParent() throws Exception { |
| final boolean called[] = new boolean[1]; |
| assertFalse(called[0]); |
| |
| final EmptyTreeIterator parent = new EmptyTreeIterator() { |
| @Override |
| public void stopWalk() { |
| called[0] = true; |
| } |
| }; |
| try (ObjectReader reader = db.newObjectReader()) { |
| parent.createSubtreeIterator(reader).stopWalk(); |
| } |
| assertTrue(called[0]); |
| } |
| } |