/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.util;
import org.apache.flink.core.testutils.CommonTestUtils;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* This class contains tests for the {@link org.apache.flink.util.AbstractID} class.
*/
public class AbstractIDTest extends TestLogger {
/**
* Tests the serialization/deserialization of an abstract ID.
*/
@Test
public void testSerialization() throws Exception {
final AbstractID origID = new AbstractID();
final AbstractID copyID = CommonTestUtils.createCopySerializable(origID);
assertEquals(origID.hashCode(), copyID.hashCode());
assertEquals(origID, copyID);
}
@Test
public void testConvertToBytes() throws Exception {
final AbstractID origID = new AbstractID();
AbstractID copy1 = new AbstractID(origID);
AbstractID copy2 = new AbstractID(origID.getBytes());
AbstractID copy3 = new AbstractID(origID.getLowerPart(), origID.getUpperPart());
assertEquals(origID, copy1);
assertEquals(origID, copy2);
assertEquals(origID, copy3);
}
@Test
public void testCompare() throws Exception {
AbstractID id1 = new AbstractID(0, 0);
AbstractID id2 = new AbstractID(1, 0);
AbstractID id3 = new AbstractID(0, 1);
AbstractID id4 = new AbstractID(-1, 0);
AbstractID id5 = new AbstractID(0, -1);
AbstractID id6 = new AbstractID(-1, -1);
AbstractID id7 = new AbstractID(Long.MAX_VALUE, Long.MAX_VALUE);
AbstractID id8 = new AbstractID(Long.MIN_VALUE, Long.MIN_VALUE);
AbstractID id9 = new AbstractID(Long.MAX_VALUE, Long.MIN_VALUE);
AbstractID id10 = new AbstractID(Long.MIN_VALUE, Long.MAX_VALUE);
// test self equality
assertEquals(0, id1.compareTo(CommonTestUtils.createCopySerializable(id1)));
assertEquals(0, id2.compareTo(CommonTestUtils.createCopySerializable(id2)));
assertEquals(0, id3.compareTo(CommonTestUtils.createCopySerializable(id3)));
assertEquals(0, id4.compareTo(CommonTestUtils.createCopySerializable(id4)));
assertEquals(0, id5.compareTo(CommonTestUtils.createCopySerializable(id5)));
assertEquals(0, id6.compareTo(CommonTestUtils.createCopySerializable(id6)));
assertEquals(0, id7.compareTo(CommonTestUtils.createCopySerializable(id7)));
assertEquals(0, id8.compareTo(CommonTestUtils.createCopySerializable(id8)));
assertEquals(0, id9.compareTo(CommonTestUtils.createCopySerializable(id9)));
assertEquals(0, id10.compareTo(CommonTestUtils.createCopySerializable(id10)));
// test order
assertCompare(id1, id2, -1);
assertCompare(id1, id3, -1);
assertCompare(id1, id4, 1);
assertCompare(id1, id5, 1);
assertCompare(id1, id6, 1);
assertCompare(id2, id5, 1);
assertCompare(id3, id5, 1);
assertCompare(id2, id6, 1);
assertCompare(id3, id6, 1);
assertCompare(id1, id7, -1);
assertCompare(id1, id8, 1);
assertCompare(id7, id8, 1);
assertCompare(id9, id10, -1);
assertCompare(id7, id9, 1);
assertCompare(id7, id10, 1);
assertCompare(id8, id9, -1);
assertCompare(id8, id10, -1);
}
private static void assertCompare(AbstractID a, AbstractID b, int signum) {
int cmpAB = a.compareTo(b);
int cmpBA = b.compareTo(a);
int sgnAB = cmpAB > 0 ? 1 : (cmpAB < 0 ? -1 : 0);
int sgnBA = cmpBA > 0 ? 1 : (cmpBA < 0 ? -1 : 0);
assertEquals(signum, sgnAB);
assertTrue(sgnAB == -sgnBA);
}
}