1 /*
   2  * Copyright (c) 2017, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 package jdk.internal.vm.compiler.collections.test;
  26 
  27 import jdk.internal.vm.compiler.collections.Pair;
  28 import org.junit.Assert;
  29 import org.junit.Test;
  30 
  31 public class PairTest {
  32 
  33     @Test
  34     public void testCreate() {
  35         Assert.assertEquals(Pair.create(null, null), Pair.empty());
  36         Assert.assertNotEquals(Pair.create(null, null), null);
  37         Assert.assertEquals(Pair.createLeft(null), Pair.empty());
  38         Assert.assertEquals(Pair.createRight(null), Pair.empty());
  39         Assert.assertEquals(Pair.create(1, null), Pair.createLeft(1));
  40         Assert.assertEquals(Pair.create(null, 1), Pair.createRight(1));
  41     }
  42 
  43     @Test
  44     public void testUtilities() {
  45         Pair<Integer, Integer> pair = Pair.create(1, null);
  46         Assert.assertEquals(pair.getLeft(), Integer.valueOf(1));
  47         Assert.assertEquals(pair.getRight(), null);
  48         Assert.assertEquals(pair.toString(), "(1, null)");
  49         Assert.assertEquals(pair.hashCode(), Pair.createLeft(1).hashCode());
  50     }
  51 
  52 }