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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=author href="mailto:falken@chromium.org">
<link rel=help href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-dialog-element">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=276785">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<dialog></dialog>
<script>
async_test(t => {
document.addEventListener('close', t.step_func_done(() => {
t.assert_unreached(`The 'close' event unexpectedly bubbled.`);
}));
closedCount = 0;
dialog = document.querySelector('dialog');
dialog.addEventListener('close', function(event) {
const selfDialog = this;
t.step(() => {
closedCount++;
assert_equals(selfDialog, dialog);
assert_false(dialog.open);
assert_false(event.cancelable);
event.preventDefault();
if (closedCount == 1) {
dialog.show();
dialog.close();
assert_equals(closedCount, 1, `dialog's close event handler shouldn't be called synchronously.`);
} else if (closedCount == 2) {
t.done();
}
});
});
dialog.show();
dialog.close();
// Verify that preventDefault() didn't cancel closing.
assert_false(dialog.open);
// dialog's close event handler shouldn't be called synchronously.
assert_equals(closedCount, 0);
}, "Test that dialog receives a close event upon closing.");
</script>
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