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const BASE_ORIGIN = "http://example.com";
const URI =
BASE_ORIGIN +
"/browser/browser/components/contextualidentity/test/browser/empty_file.html";
// Opens `uri' in a new tab with the provided userContextId and focuses it.
// Returns the newly opened tab and browser.
async function openTabInUserContext(uri, userContextId) {
// open the tab in the correct userContextId
let tab = BrowserTestUtils.addTab(gBrowser, uri, { userContextId });
// select tab and make sure its browser is focused
gBrowser.selectedTab = tab;
tab.ownerGlobal.focus();
let browser = gBrowser.getBrowserForTab(tab);
await BrowserTestUtils.browserLoaded(browser);
return { tab, browser };
}
async function runTestForReceiver(receiver) {
let channelName = "contextualidentity-broadcastchannel";
// reflect the received message on title
await SpecialPowers.spawn(receiver.browser, [channelName], function(name) {
content.window.testPromise = new content.window.Promise(resolve => {
content.window.bc = new content.window.BroadcastChannel(name);
content.window.bc.onmessage = function(e) {
content.document.title += e.data;
resolve();
};
});
});
let sender1 = await openTabInUserContext(URI, 1);
let sender2 = await openTabInUserContext(URI, 2);
sender1.message = "Message from user context #1";
sender2.message = "Message from user context #2";
// send a message from a tab in different user context first
// then send a message from a tab in the same user context
for (let sender of [sender1, sender2]) {
await SpecialPowers.spawn(
sender.browser,
[{ name: channelName, message: sender.message }],
function(opts) {
let bc = new content.window.BroadcastChannel(opts.name);
bc.postMessage(opts.message);
}
);
}
// Since sender1 sends before sender2, if the title is exactly
// sender2's message, sender1's message must've been blocked
await SpecialPowers.spawn(receiver.browser, [sender2.message], async function(
message
) {
await content.window.testPromise.then(function() {
is(
content.document.title,
message,
"should only receive messages from the same user context"
);
});
});
gBrowser.removeTab(sender1.tab);
gBrowser.removeTab(sender2.tab);
}
add_setup(async function() {
// make sure userContext is enabled.
await SpecialPowers.pushPrefEnv({
set: [["privacy.userContext.enabled", true]],
});
});
add_task(async function test() {
info("Checking broadcast channel with browser tab receiver");
let receiver = await openTabInUserContext(URI, 2);
await runTestForReceiver(receiver);
gBrowser.removeTab(receiver.tab);
});
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