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[BroadcastChannel] Add Partitioning WPT #32690

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Feb 4, 2022
Merged

[BroadcastChannel] Add Partitioning WPT #32690

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72 changes: 72 additions & 0 deletions webmessaging/broadcastchannel/cross-partition.https.tentative.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<meta charset=utf-8>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="/common/utils.js"></script>
<script src="/common/dispatcher/dispatcher.js"></script>
<!-- Pull in executor_path needed by newPopup / newIframe -->
<script src="/html/cross-origin-embedder-policy/credentialless/resources/common.js"></script>
<!-- Pull in newPopup / newIframe -->
<script src="/html/cross-origin-embedder-policy/anonymous-iframe/resources/common.js"></script>
<body>
<script>

const emit_script = (channel_name, message, done_queue_name) => `
const bc = new BroadcastChannel("${channel_name}");
bc.postMessage("${message}");
send("${done_queue_name}", "done");
`;

promise_test(async t => {
const origin = get_host_info().HTTPS_ORIGIN;
const not_same_site_origin = get_host_info().HTTPS_NOTSAMESITE_ORIGIN;
const response_queue_uuid = token();

const popup_init_script = `
const importScript = ${importScript};
await importScript("/html/cross-origin-embedder-policy/credentialless" +
"/resources/common.js");
await importScript("/html/cross-origin-embedder-policy/anonymous-iframe" +
"/resources/common.js");
await importScript("/common/utils.js");
send("${response_queue_uuid}", newIframe("${origin}"));
`;

// Create a same-origin iframe in a cross-site popup.
const not_same_site_popup_uuid = newPopup(t, not_same_site_origin);
send(not_same_site_popup_uuid, popup_init_script);
const iframe_1_uuid = await receive(response_queue_uuid);

// Create a same-origin iframe in a same-site popup.
const same_origin_popup_uuid = newPopup(t, origin);
send(same_origin_popup_uuid, popup_init_script);
const iframe_2_uuid = await receive(response_queue_uuid);

const channel_name = token();
const bc = new BroadcastChannel(channel_name);
bc.onmessage = t.step_func(e => {
assert_equals(e.data, "msg from iframe2");
t.done();
});

// Instruct the not-same-top-level-site iframe to send a message on the BC
// channel we are listening on. This message should not be received since
// the iframe should be in a different partition.
send(iframe_1_uuid,
emit_script(channel_name, "msg from iframe1", response_queue_uuid));
assert_equals(await receive(response_queue_uuid), "done");

// Now instruct the same-top-level-site iframe to send a BC message. By
// the time we send the script to execute, have it send the BC message,
// and then receive the BC message in our BC instance, it should be
// reasonable to assume that the message from the first iframe would have
// been delivered if it was going to be.
send(iframe_2_uuid,
emit_script(channel_name, "msg from iframe2", response_queue_uuid));
assert_equals(await receive(response_queue_uuid), "done");

}, "BroadcastChannel messages aren't received from a cross-partition iframe");

</script>
</body>