third_party/WebKit/LayoutTests/fast/js/script-tests/cross-frame-really-bad-time-with-__proto__.js

   1 description(
   2 "Tests that having a bad time has correct cross frame behavior, if an instance object is created in a different global object than the affected prototype, and the prototype is assigned using __proto__."
   3 );
   4
   5 if (window.testRunner)
   6     testRunner.waitUntilDone();
   7
   8 var ouches = 0;
   9
  10 var array;
  11
  12 function foo(thePrototype) {
  13     array = {};
  14     array.__proto__ = thePrototype;
  15     array.length = 10;
  16     for (var i = 0; i < 10; i+=2)
  17         array[i] = 42;
  18 }
  19
  20 function evil(thePrototype) {
  21     for (var i = 0; i < 10; i+=2)
  22         thePrototype.__defineSetter__(i + 1, function() { ouches++; });
  23 }
  24
  25 function bar() {
  26     for (var i = 0; i < 10; i+=2)
  27         array[i + 1] = 63;
  28 }
  29
  30 function done() {
  31     var string = Array.prototype.join.apply(array, [","]);
  32     debug("Array is: " + string);
  33     if (string == "42,,42,,42,,42,,42,")
  34         testPassed("Array has holes in odd numbered entries.");
  35     else
  36         testFailed("Array does not have the required holes.");
  37
  38     if (ouches == 5)
  39         testPassed("Got 5 ouches.");
  40     else
  41         testFailed("Did not get 5 ouches. Got " + ouches + " + instead.");
  42
  43     if (testRunner)
  44         testRunner.notifyDone();
  45 }
  46
  47 var frame = document.getElementById("myframe");
  48
  49 frame.contentDocument.open();
  50 frame.contentDocument.write(
  51     "<!DOCTYPE html>\n<html><body><script type=\"text/javascript\">\n" +
  52     "var thePrototype = {};\n" +
  53     "window.parent.foo(thePrototype);\n" +
  54     "window.parent.evil(thePrototype);\n" +
  55     "window.parent.bar();\n" +
  56     "window.parent.done();\n" +
  57     "</script></body></html>");
  58 frame.contentDocument.close();