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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
// Tests that the Web Console doesn't leak when multiple tabs and windows are
// opened and then closed. See Bug 595350.
"use strict";
const TEST_URI =
"data:text/html;charset=utf-8,<!DOCTYPE html>Web Console test for bug 595350";
add_task(async function () {
requestLongerTimeout(3);
// Bug 1518138: GC heuristics are broken for this test, so that the test
// ends up running out of memory. Try to work-around the problem by GCing
// before the test begins.
Cu.forceShrinkingGC();
const win1 = window;
info("Add test tabs in first window");
const tab1 = await addTab(TEST_URI, { window: win1 });
const tab2 = await addTab(TEST_URI, { window: win1 });
info("Test tabs added in first window");
info("Open a second window");
const windowOpenedPromise = BrowserTestUtils.waitForNewWindow();
const win2 = OpenBrowserWindow();
await windowOpenedPromise;
info("Add test tabs in second window");
const tab3 = await addTab(TEST_URI, { window: win2 });
const tab4 = await addTab(TEST_URI, { window: win2 });
info("Opening console in each test tab");
const tabs = [tab1, tab2, tab3, tab4];
for (const tab of tabs) {
// Open the console in tab${i}.
const hud = await openConsole(tab);
const browser = hud.commands.descriptorFront.localTab.linkedBrowser;
const message = "message for tab " + tabs.indexOf(tab);
// Log a message in the newly opened console.
const onMessage = waitForMessageByType(hud, message, ".console-api");
await SpecialPowers.spawn(browser, [message], function (msg) {
content.console.log(msg);
});
await onMessage;
await hud.toolbox.sourceMapURLService.waitForSourcesLoading();
}
const onConsolesDestroyed = waitForNEvents("web-console-destroyed", 4);
info("Close the second window");
win2.close();
info("Close the test tabs in the first window");
win1.gBrowser.removeTab(tab1);
win1.gBrowser.removeTab(tab2);
info("Wait for 4 web-console-destroyed events");
await onConsolesDestroyed;
ok(true, "Received web-console-destroyed for each console opened");
});
/**
* Wait for N events helper customized to work with Services.obs.add/removeObserver.
*/
function waitForNEvents(expectedTopic, times) {
return new Promise(resolve => {
let count = 0;
function onEvent(subject, topic) {
if (topic !== expectedTopic) {
return;
}
count++;
info(`Received ${expectedTopic} ${count} time(s).`);
if (count == times) {
resolve();
}
}
registerCleanupFunction(() => {
Services.obs.removeObserver(onEvent, expectedTopic);
});
Services.obs.addObserver(onEvent, expectedTopic);
});
}
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