LayoutTests/fast/events/resources/before-unload-return-string-conversion-frame.html

   1 <!DOCTYPE html>
   2 <script>
   3
   4 parent.toStringCalled = false;
   5
   6 window.runTest = function() {
   7     window.onbeforeunload = function(e) {
   8         e.returnValue = "PASS";
   9         return { toString: function () { parent.toStringCalled = true; return "FAIL"; } };
  10     }
  11
  12     const listener = function(e) {
  13         parent.event = e;
  14         parent.shouldBeTrue("event.defaultPrevented");
  15         parent.shouldBeEqualToString("event.returnValue", "PASS");
  16         parent.shouldBeTrue("toStringCalled");
  17         parent.setTimeout(function() {
  18             parent.finishJSTest();
  19         }, 0);
  20     }
  21
  22     window.addEventListener("beforeunload", listener);
  23     window.location.href = "about:blank";
  24 }
  25 </script>