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<!doctype html>
<title>opener and discarded browsing contexts</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<iframe name=matchesastring></iframe>
<script>
function testOpener(t, otherW, thisW, discardOtherBC, isDiscardedFromATask) {
assert_equals(otherW.opener, thisW, "opener before removal");
const openerDesc = Object.getOwnPropertyDescriptor(otherW, "opener"),
openerGet = openerDesc.get;
assert_equals(openerGet(), thisW, "opener before removal via directly invoking the getter");
discardOtherBC();
if (isDiscardedFromATask) {
t.step_timeout(() => {
testOpenerRemainder(t, otherW, openerDesc, openerGet);
}, 250);
} else {
testOpenerRemainder(t, otherW, openerDesc, openerGet);
}
}
function testOpenerRemainder(t, otherW, openerDesc, openerGet) {
assert_equals(otherW.opener, null, "opener after removal");
assert_equals(openerGet(), null, "opener after removal via directly invoking the getter");
otherW.opener = null;
assert_equals(openerGet(), null, "opener after setting it null via directly invoking the getter");
const openerDescNull = Object.getOwnPropertyDescriptor(otherW, "opener");
assert_not_equals(openerDescNull, openerDesc);
assert_object_equals(openerDescNull, openerDesc);
otherW.opener = "immaterial";
assert_equals(openerGet(), null, "opener after setting it \"immaterial\" via directly invoking the getter");
const openerDescImmaterial = Object.getOwnPropertyDescriptor(otherW, "opener");
assert_equals(openerDescImmaterial.value, "immaterial");
assert_true(openerDescImmaterial.writable);
assert_true(openerDescImmaterial.enumerable);
assert_true(openerDescImmaterial.configurable);
t.done();
}
async_test(t => {
const frame = document.querySelector("iframe"),
frameW = frame.contentWindow;
frame.onload = t.step_func(() => {
// Firefox and Chrome/Safari load differently
if (frame.contentWindow.location.href === "about:blank") {
return;
}
testOpener(t, frameW, window, () => frame.remove(), false);
});
window.open("/common/blank.html", "matchesastring");
}, "opener of discarded nested browsing context");
async_test(t => {
const popupW = window.open("/common/blank.html");
popupW.onload = t.step_func(() => {
testOpener(t, popupW, window, () => popupW.close(), true);
});
}, "opener of discarded auxiliary browsing context");
</script>
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