1 /*
   2  * Copyright (c) 2007, 2012, 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 package org.graalvm.compiler.jtt.lang;
  24 
  25 import org.junit.Test;
  26 
  27 import org.graalvm.compiler.jtt.JTTTest;
  28 
  29 /*
  30  */
  31 public class System_identityHashCode01 extends JTTTest {
  32 
  33     private static final Object object0 = new Object();
  34     private static final Object object1 = new Object();
  35     private static final Object object2 = new Object();
  36 
  37     private static final int hash0 = System.identityHashCode(object0);
  38     private static final int hash1 = System.identityHashCode(object1);
  39     private static final int hash2 = System.identityHashCode(object2);
  40 
  41     public static boolean test(int i) {
  42         if (i == 0) {
  43             return hash0 == System.identityHashCode(object0);
  44         }
  45         if (i == 1) {
  46             return hash1 == System.identityHashCode(object1);
  47         }
  48         if (i == 2) {
  49             return hash2 == System.identityHashCode(object2);
  50         }
  51         if (i == 3) {
  52             return 0 == System.identityHashCode(null);
  53         }
  54         return false;
  55     }
  56 
  57     @Test
  58     public void run0() throws Throwable {
  59         runTest("test", 0);
  60     }
  61 
  62     @Test
  63     public void run1() throws Throwable {
  64         runTest("test", 1);
  65     }
  66 
  67     @Test
  68     public void run2() throws Throwable {
  69         runTest("test", 2);
  70     }
  71 
  72     @Test
  73     public void run3() throws Throwable {
  74         runTest("test", 3);
  75     }
  76 
  77     @Test
  78     public void run4() throws Throwable {
  79         runTest("test", 4);
  80     }
  81 }