1 /*
   2  * Copyright (c) 2016, 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  * JDK-8151809: ES6 Map/Set insertion with existing keys changes iteration order
  26  *
  27  * @test
  28  * @run
  29  * @option --language=es6
  30  */
  31 
  32 function assertSetIteratorResult(result, expectedDone, expectedValue) {
  33     Assert.assertEquals(result.done, expectedDone);
  34     Assert.assertEquals(result.value, expectedValue);
  35 }
  36 
  37 function assertMapIteratorResult(result, expectedDone, expectedKey, expectedValue) {
  38     Assert.assertEquals(result.done, expectedDone);
  39     if (expectedDone) {
  40         Assert.assertEquals(result.value, undefined);
  41     } else {
  42         Assert.assertEquals(result.value[0], expectedKey);
  43         Assert.assertEquals(result.value[1], expectedValue);
  44     }
  45 }
  46 
  47 let set = new Set(["foo", "bar", "foo"]);
  48 let iter = set[Symbol.iterator]();
  49 assertSetIteratorResult(iter.next(), false, "foo");
  50 assertSetIteratorResult(iter.next(), false, "bar");
  51 assertSetIteratorResult(iter.next(), true);
  52 
  53 set.add ("foo");
  54 iter = set[Symbol.iterator]();
  55 assertSetIteratorResult(iter.next(), false, "foo", false);
  56 assertSetIteratorResult(iter.next(), false, "bar", false);
  57 assertSetIteratorResult(iter.next(), true);
  58 
  59 set.delete("foo");
  60 set.add ("foo");
  61 assertSetIteratorResult(iter.next(), true);
  62 iter = set[Symbol.iterator]();
  63 assertSetIteratorResult(iter.next(), false, "bar", false);
  64 assertSetIteratorResult(iter.next(), false, "foo", false);
  65 assertSetIteratorResult(iter.next(), true);
  66 
  67 
  68 let map = new Map([["foo", 1], ["bar", 2], ["foo", 3]]);
  69 iter = map[Symbol.iterator]();
  70 assertMapIteratorResult(iter.next(), false, "foo", 3);
  71 assertMapIteratorResult(iter.next(), false, "bar", 2);
  72 assertMapIteratorResult(iter.next(), true);
  73 
  74 
  75 map.set("foo", 4);
  76 iter = map[Symbol.iterator]();
  77 assertMapIteratorResult(iter.next(), false, "foo", 4);
  78 assertMapIteratorResult(iter.next(), false, "bar", 2);
  79 assertMapIteratorResult(iter.next(), true);
  80 
  81 map.delete("foo");
  82 map.set("foo", 5);
  83 assertMapIteratorResult(iter.next(), true);
  84 iter = map[Symbol.iterator]();
  85 assertMapIteratorResult(iter.next(), false, "bar", 2);
  86 assertMapIteratorResult(iter.next(), false, "foo", 5);
  87 assertMapIteratorResult(iter.next(), true);