/*
    * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    *
    * This code is free software; you can redistribute it and/or modify it
    * under the terms of the GNU General Public License version 2 only, as
    * published by the Free Software Foundation.
    *
    * This code is distributed in the hope that it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   * version 2 for more details (a copy is included in the LICENSE file that
   * accompanied this code).
   *
   * You should have received a copy of the GNU General Public License version
   * 2 along with this work; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
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   */
  
  /*
   * @test
   * @bug 6255956
   * @summary Test equals and hashCode for descriptors
   * @author Eamonn McManus
   * @run clean EqualsHashCodeTest
   * @run build EqualsHashCodeTest
   * @run main EqualsHashCodeTest
   */
  
  import java.util.Arrays;
  import javax.management.*;
  import javax.management.modelmbean.DescriptorSupport;
  
  public class EqualsHashCodeTest {
      public static void main(String[] args) throws Exception {
          int[] squares = {1, 4, 9, 16};
          int[] serauqs = {16, 9, 4, 1};
          int[][] numbers = {squares, serauqs};
  
          Descriptor sq1 =
              new ImmutableDescriptor(new String[] {"name", "rank", "squares",
                                                    "null", "numbers"},
                                      new Object[] {"Foo McBar", "lowly",
                                                    squares.clone(), null,
                                                    numbers});
          Descriptor sq2 =
              new DescriptorSupport(new String[] {"Name", "Rank", "SquareS",
                                                  "NULL", "NuMbErS"},
                                    new Object[] {"Foo McBar", "lowly",
                                                  squares.clone(), null,
                                                  numbers});
          Descriptor sq3 = (Descriptor) sq2.clone();
          Descriptor sq4 = ImmutableDescriptor.union(sq1, sq2);
  
          String[] names = sq1.getFieldNames();
          Object[] values = sq1.getFieldValues((String[]) null);
          Object[] values2 = sq1.getFieldValues(names);
          if (!Arrays.deepEquals(values, values2)) {
              throw new Exception("Arrays not equal: " +
                      Arrays.deepToString(values) + Arrays.deepToString(values2));
          }
  
          int expectedHashCode = 0;
          for (int i = 0; i < names.length; i++) {
              Object value = values[i];
              int h;
              if (value == null)
                  h = 0;
              else if (value instanceof int[])
                  h = Arrays.hashCode((int[]) value);
              else if (value instanceof Object[])
                  h = Arrays.deepHashCode((Object[]) value);
              else
                  h = value.hashCode();
              expectedHashCode += names[i].toLowerCase().hashCode() ^ h;
          }
          for (Descriptor d : new Descriptor[] {sq1, sq2, sq3, sq4}) {
              System.out.println("Testing hashCode for " +
                                 d.getClass().getName() + ": " + d);
              if (d.hashCode() != expectedHashCode) {
                  throw new Exception("Bad hashCode: expected " +
                                      expectedHashCode + ", got " + d.hashCode() +
                                      ", for " + d);
              }
          }
  
          int i;
          for (i = 0; i < names.length; i++) {
              if (names[i].equals("squares")) {
                  values[i] = serauqs.clone();
                  break;
              }
          }
          if (i >= names.length)
              throw new Exception("Internal error: no squares name");
         Descriptor qs1 = new ImmutableDescriptor(names, values);
         values[i] = serauqs.clone();
         Descriptor qs2 = new DescriptorSupport(names, values);
 
         System.out.println("Testing equality...");
 
         Object[][] equivalenceClasses = {
             {sq1, sq2, sq3, sq4},
             {qs1, qs2},
         };
         for (Object[] equivClass : equivalenceClasses) {
             for (Object a : equivClass) {
                 for (Object b : equivClass) {
                     if (!a.equals(b)) {
                         throw new Exception("Should be equal but not: " +
                                             a + " :: " + b);
                     }
                 }
                 for (Object[] equivClass2 : equivalenceClasses) {
                     if (equivClass2 == equivClass)
                         continue;
                     for (Object b : equivClass2) {
                         if (a.equals(b)) {
                             throw new Exception("Should not be equal: " +
                                                 a + " :: " + b);
                         }
                     }
                 }
             }
         }
 
         System.out.println("TEST PASSED");
     }
 }