| <!DOCTYPE html> |
| <script> |
| |
| parent.toStringCalled = false; |
| |
| window.runTest = function() { |
| window.onbeforeunload = function(e) { |
| e.returnValue = "PASS"; |
| return { toString: function () { parent.toStringCalled = true; return "FAIL"; } }; |
| } |
| |
| const listener = function(e) { |
| parent.event = e; |
| parent.shouldBeTrue("event.defaultPrevented"); |
| parent.shouldBeEqualToString("event.returnValue", "PASS"); |
| parent.shouldBeTrue("toStringCalled"); |
| parent.finishJSTest(); |
| } |
| |
| window.addEventListener("beforeunload", listener); |
| window.location.href = "about:blank"; |
| } |
| </script> |
