/*
* Copyright (C) 2008, Google Inc.
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
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* All rights reserved.
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* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
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*
* - Redistributions of source code must retain the above copyright
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* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
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* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.treewalk;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.RepositoryTestCase;
public class EmptyTreeIteratorTest extends RepositoryTestCase {
public void testAtEOF() throws Exception {
final EmptyTreeIterator etp = new EmptyTreeIterator();
assertTrue(etp.first());
assertTrue(etp.eof());
}
public void testCreateSubtreeIterator() throws Exception {
final EmptyTreeIterator etp = new EmptyTreeIterator();
final ObjectReader reader = db.newObjectReader();
final AbstractTreeIterator sub = etp.createSubtreeIterator(reader);
assertNotNull(sub);
assertTrue(sub.first());
assertTrue(sub.eof());
assertTrue(sub instanceof EmptyTreeIterator);
}
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()));
}
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()));
}
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()));
}
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;
}
};
final ObjectReader reader = db.newObjectReader();
parent.createSubtreeIterator(reader).stopWalk();
assertTrue(called[0]);
}
}