third_party/WebKit/LayoutTests/fast/js/pic/rehash-poisons-structure.html

   1 <p>
   2 This page tests a specific set of conditions that could cause a property map to
   3 rehash, giving two objects with equal structure ID's unequal structures. If the
   4 test passes, you'll see a PASS message below.
   5 </p>
   6
   7 <pre id="console"></pre>
   8
   9 <script>
  10 (function() {
  11     if (window.testRunner)
  12         testRunner.dumpAsText();
  13
  14     function log(s)
  15     {
  16         if (this.document)
  17             document.getElementById("console").appendChild(document.createTextNode(s + "\n"));
  18         else
  19             print(s + "\n");
  20     }
  21
  22     function shouldBe(a, aDescription, b)
  23     {
  24         if (a === b) {
  25             log("PASS: " + aDescription + " should be " + b + " and is.");
  26         } else {
  27             log("FAIL: " + aDescription + " should be " + b + " but instead is " + a + ".");
  28         }
  29     }
  30
  31     function getP7(o)
  32     {
  33         return o.p7;
  34     }
  35
  36     var o = {
  37         p1: 1,
  38         p2: 1,
  39         p3: 1,
  40         p4: 1,
  41         p5: 1,
  42         p6: 1,
  43         p7: 1,
  44         p8: 1
  45     };
  46
  47     o.p7 = 1;
  48
  49     var o2 = {
  50         p1: 1,
  51         p2: 1,
  52         p3: 1,
  53         p4: 1,
  54         p5: 1,
  55         p6: 1,
  56         p7: 1,
  57         p8: 1
  58     };
  59
  60     getP7(o);
  61     getP7(o);
  62
  63     shouldBe(getP7(o) == getP7(o2), "getP7(o) == getP7(o2)", true);
  64 })();
  65 </script>