mozilla-central/toolkit/components/extensions/test/xpcshell/test_ext_background_early_quit.js (file symbol)

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Test Info: Warnings

"use strict";
const { Management } = ChromeUtils.importESModule(
"resource://gre/modules/Extension.sys.mjs"
);
// This test task quits in the middle of the test - do NOT add more tests below
// this, unless you explicitly want to verify the behavior after quitting.
//
// Quitting while an extension is starting should not block shutdown.
// Previously, if an extension was starting at application startup, and the
// application quit before the background page startup completed, then the
// implementation would wait indefinitely for the completion of background
// startup (which would not trigger because past shutdown any attempt to load
// content is aborted with NS_ERROR_ILLEGAL_DURING_SHUTDOWN).
add_task(async function test_quit_while_background_starts() {
let extension = ExtensionTestUtils.loadExtension({
// Extension startup is blocked on background startup (bug 1543354).
// If we somehow fail to make progress, then we should notice that.
delayedStartup: false,
background() {
browser.test.fail(
"Unexpected background page execution. eForceQuit should have aborted all document loads"
);
},
});
info("Waiting for extension to start up");
let browserCount = 0;
Management.once("extension-browser-inserted", (eventName, browser) => {
++browserCount;
equal(
browser.getAttribute("webextension-view-type"),
"background",
"Got background browser"
);
// The Quit() call below calls ExitLastWindowClosingSurvivalArea() at
// which expects an EnterLastWindowClosingSurvivalArea() to have called
// before, or else the following assertion will be triggered at:
// ASSERTION: consider quit stopper out of bounds: 'mConsiderQuitStopper > 0
//
// During normal (non-xpcshell) execution, nsAppStartup::Run() runs, which
// calls EnterLastWindowClosingSurvivalArea(). In xpcshell tests, this is
// not called, and we need to call it here:
Services.startup.enterLastWindowClosingSurvivalArea();
Services.startup.quit(Ci.nsIAppStartup.eForceQuit);
});
await extension.startup();
equal(browserCount, 1, "Seen background browser");
equal(extension.extension.backgroundState, "stopped", "backgroundState");
await extension.unload();
});