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Test Info:

<!doctype html>
<title>Cross-Origin-Opener-Policy: about:blank</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
async_test(t => {
const popup = window.open("resources/coop-coep.py?coop=same-origin&coep=&navigate=about:blank");
t.add_cleanup(() => popup.close());
assert_equals(window, popup.opener);
popup.onload = t.step_func(() => {
assert_true(popup.location.href.endsWith("&navigate=about:blank"));
// Use wait_for_callback as about:blank cannot message back.
t.step_wait_func_done(() => popup.location.href === "about:blank");
});
}, "Navigating a popup to about:blank");
</script>