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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Flags: --expose-debug-as debug --expose-gc
      6 
      7 function testMapMirror(mirror) {
      8   // Create JSON representation.
      9   var serializer = debug.MakeMirrorSerializer();
     10   var json = JSON.stringify(serializer.serializeValue(mirror));
     11 
     12   // Check the mirror hierachy.
     13   assertTrue(mirror instanceof debug.Mirror);
     14   assertTrue(mirror instanceof debug.ValueMirror);
     15   assertTrue(mirror instanceof debug.ObjectMirror);
     16   assertTrue(mirror instanceof debug.MapMirror);
     17 
     18   assertTrue(mirror.isMap());
     19 
     20   // Parse JSON representation and check.
     21   var fromJSON = eval('(' + json + ')');
     22   assertEquals('map', fromJSON.type);
     23 }
     24 
     25 function testSetMirror(mirror) {
     26   // Create JSON representation.
     27   var serializer = debug.MakeMirrorSerializer();
     28   var json = JSON.stringify(serializer.serializeValue(mirror));
     29 
     30   // Check the mirror hierachy.
     31   assertTrue(mirror instanceof debug.Mirror);
     32   assertTrue(mirror instanceof debug.ValueMirror);
     33   assertTrue(mirror instanceof debug.ObjectMirror);
     34   assertTrue(mirror instanceof debug.SetMirror);
     35 
     36   assertTrue(mirror.isSet());
     37 
     38   // Parse JSON representation and check.
     39   var fromJSON = eval('(' + json + ')');
     40   assertEquals('set', fromJSON.type);
     41 }
     42 
     43 var o1 = new Object();
     44 var o2 = new Object();
     45 var o3 = new Object();
     46 
     47 // Test the mirror object for Maps
     48 var map = new Map();
     49 map.set(o1, 11);
     50 map.set(o2, 22);
     51 map.delete(o1);
     52 var mapMirror = debug.MakeMirror(map);
     53 testMapMirror(mapMirror);
     54 var entries = mapMirror.entries();
     55 assertEquals(1, entries.length);
     56 assertSame(o2, entries[0].key);
     57 assertEquals(22, entries[0].value);
     58 map.set(o1, 33);
     59 map.set(o3, o2);
     60 map.delete(o2);
     61 map.set(undefined, 44);
     62 entries = mapMirror.entries();
     63 assertEquals(3, entries.length);
     64 assertSame(o1, entries[0].key);
     65 assertEquals(33, entries[0].value);
     66 assertSame(o3, entries[1].key);
     67 assertSame(o2, entries[1].value);
     68 assertEquals(undefined, entries[2].key);
     69 assertEquals(44, entries[2].value);
     70 
     71 // Test the mirror object for Sets
     72 var set = new Set();
     73 set.add(o1);
     74 set.add(o2);
     75 set.delete(o1);
     76 set.add(undefined);
     77 var setMirror = debug.MakeMirror(set);
     78 testSetMirror(setMirror);
     79 var values = setMirror.values();
     80 assertEquals(2, values.length);
     81 assertSame(o2, values[0]);
     82 assertEquals(undefined, values[1]);
     83 
     84 // Test the mirror object for WeakMaps
     85 var weakMap = new WeakMap();
     86 weakMap.set(o1, 11);
     87 weakMap.set(new Object(), 22);
     88 weakMap.set(o3, 33);
     89 weakMap.set(new Object(), 44);
     90 var weakMapMirror = debug.MakeMirror(weakMap);
     91 testMapMirror(weakMapMirror);
     92 weakMap.set(new Object(), 55);
     93 assertTrue(weakMapMirror.entries().length <= 5);
     94 gc();
     95 
     96 function testWeakMapEntries(weakMapMirror) {
     97   var entries = weakMapMirror.entries();
     98   assertEquals(2, entries.length);
     99   var found = 0;
    100   for (var i = 0; i < entries.length; i++) {
    101     if (Object.is(entries[i].key, o1)) {
    102       assertEquals(11, entries[i].value);
    103       found++;
    104     }
    105     if (Object.is(entries[i].key, o3)) {
    106       assertEquals(33, entries[i].value);
    107       found++;
    108     }
    109   }
    110   assertEquals(2, found);
    111 }
    112 
    113 testWeakMapEntries(weakMapMirror);
    114 
    115 // Test the mirror object for WeakSets
    116 var weakSet = new WeakSet();
    117 weakSet.add(o1);
    118 weakSet.add(new Object());
    119 weakSet.add(o2);
    120 weakSet.add(new Object());
    121 weakSet.add(new Object());
    122 weakSet.add(o3);
    123 weakSet.delete(o2);
    124 var weakSetMirror = debug.MakeMirror(weakSet);
    125 testSetMirror(weakSetMirror);
    126 assertTrue(weakSetMirror.values().length <= 5);
    127 gc();
    128 
    129 function testWeakSetValues(weakSetMirror) {
    130   var values = weakSetMirror.values();
    131   assertEquals(2, values.length);
    132   var found = 0;
    133   for (var i = 0; i < values.length; i++) {
    134     if (Object.is(values[i], o1)) {
    135       found++;
    136     }
    137     if (Object.is(values[i], o3)) {
    138       found++;
    139     }
    140   }
    141   assertEquals(2, found);
    142 }
    143 
    144 testWeakSetValues(weakSetMirror);
    145