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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="resources/utils.js"></script>
<title>Test fenced frame null config installation triggers about:blank navigation.</title>
<body>
<script>
promise_test(async (t) => {
var frame_context = attachFencedFrameContext();
// Ensure remote context responds.
let alive_indicator = await Promise.race([
frame_context.execute(() => 'alive'),
new Promise((resolve, reject) => t.step_timeout(
() => reject('timed_out'), 3000))
]);
assert_equals(alive_indicator, 'alive');
assert_not_equals(frame_context.element.config, null);
// Navigates to about:blank. Because this navigates away from the page
// that the frame_context.element.config is currently pointing to, the
// FencedFrame's portion of the remote context handling code will be
// removed.
frame_context.element.config = null;
// This call should not succeed, because we should have navigated to
// about:blank. Note that because the code has been deleted as described
// above, we can't actually inspect the URL to determine it is
// about:blank; we have to use our timeout as a proxy.
let timeout_indicator = await Promise.any([
frame_context.execute(() => 'alive'),
new Promise(resolve => t.step_timeout(
() => resolve('timed_out'), 3000))
]);
assert_equals(timeout_indicator, 'timed_out');
}, "Test that a fenced frame with a config explicitly set to null navigates to about:blank");
</script>
</body>
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