1 /*
   2  * Copyright (c) 2017, 2018, 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 
  26 
  27 
  28 
  29 
  30 
  31 
  32 
  33 
  34 
  35 
  36 
  37 
  38 
  39 
  40 
  41 package jdk.internal.vm.compiler.collections.test;
  42 
  43 import jdk.internal.vm.compiler.collections.Equivalence;
  44 import org.junit.Assert;
  45 import org.junit.Test;
  46 
  47 public class EquivalenceTest {
  48 
  49     private static final String TEST_STRING = "Graal";
  50     private static final String TEST_STRING2 = "Graal2";
  51 
  52     @Test
  53     public void testDEFAULT() {
  54         Assert.assertTrue(Equivalence.DEFAULT.equals(TEST_STRING, new String(TEST_STRING)));
  55         Assert.assertEquals(Equivalence.DEFAULT.hashCode(TEST_STRING), Equivalence.DEFAULT.hashCode(new String(TEST_STRING)));
  56         Assert.assertFalse(Equivalence.DEFAULT.equals(TEST_STRING, TEST_STRING2));
  57         Assert.assertNotEquals(Equivalence.DEFAULT.hashCode(TEST_STRING), Equivalence.DEFAULT.hashCode(TEST_STRING2));
  58     }
  59 
  60     @Test
  61     public void testIDENTITY() {
  62         Assert.assertFalse(Equivalence.IDENTITY.equals(TEST_STRING, new String(TEST_STRING)));
  63         Assert.assertEquals(Equivalence.IDENTITY.hashCode(TEST_STRING), Equivalence.IDENTITY.hashCode(new String(TEST_STRING)));
  64         Assert.assertFalse(Equivalence.IDENTITY.equals(TEST_STRING, TEST_STRING2));
  65         Assert.assertNotEquals(Equivalence.IDENTITY.hashCode(TEST_STRING), Equivalence.IDENTITY.hashCode(TEST_STRING2));
  66     }
  67 
  68     @Test
  69     public void testIDENTITYWITHSYSTEMHASHCODE() {
  70         Assert.assertFalse(Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.equals(TEST_STRING, new String(TEST_STRING)));
  71         Assert.assertNotEquals(Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.hashCode(TEST_STRING), Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.hashCode(new String(TEST_STRING)));
  72         Assert.assertFalse(Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.equals(TEST_STRING, TEST_STRING2));
  73         Assert.assertNotEquals(Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.hashCode(TEST_STRING), Equivalence.IDENTITY_WITH_SYSTEM_HASHCODE.hashCode(TEST_STRING2));
  74     }
  75 
  76 }