test_shutdown_early.js

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/

*/

"use strict";

const { TelemetryEnvironment } = ChromeUtils.importESModule(

  "resource://gre/modules/TelemetryEnvironment.sys.mjs"

);

// Regression test for bug 1665568: verifies that AddonManager unblocks shutdown

// when startup is interrupted very early.

add_task(async function test_shutdown_immediately_after_startup() {

  // Set as migrated to prevent sync DB load at startup.

  Services.prefs.setCharPref("extensions.lastAppVersion", "42");

  createAppInfo("xpcshell@tests.mozilla.org", "XPCShell", "42");

  Cc["@mozilla.org/addons/integration;1"]

    .getService(Ci.nsIObserver)

    .observe(null, "addons-startup", null);

  // Above, we have configured the runtime to avoid a forced synchronous load

  // of the database. Confirm that this is indeed the case.

  equal(AddonManagerPrivate.isDBLoaded(), false, "DB not loaded synchronously");

  let shutdownCount = 0;

  AddonManager.beforeShutdown.addBlocker("count", async () => ++shutdownCount);

  let databaseLoaded = false;

  AddonManagerPrivate.databaseReady.then(() => {

    databaseLoaded = true;

});

  // Accessing TelemetryEnvironment.currentEnvironment triggers initialization

  // of TelemetryEnvironment / EnvironmentAddonBuilder, which registers a

  // shutdown blocker.

  equal(

    TelemetryEnvironment.currentEnvironment.addons,

    undefined,

    "TelemetryEnvironment.currentEnvironment.addons is uninitialized"

);

  info("Immediate exit at startup, without quit-application-granted");

  Services.startup.advanceShutdownPhase(

    Services.startup.SHUTDOWN_PHASE_APPSHUTDOWN

);

  let shutdownPromise = MockAsyncShutdown.profileBeforeChange.trigger();

  equal(shutdownCount, 1, "AddonManager.beforeShutdown has started");

  // Note: Until now everything ran in the same tick of the event loop.

  // Waiting for AddonManager to have shut down.

  await shutdownPromise;

  ok(databaseLoaded, "Addon DB loaded for use by TelemetryEnvironment");

  equal(AddonManagerPrivate.isDBLoaded(), false, "DB unloaded after shutdown");

  Assert.deepEqual(

    TelemetryEnvironment.currentEnvironment.addons.activeAddons,

{},

    "TelemetryEnvironment.currentEnvironment.addons is initialized"

);

});