117 lines
3.9 KiB
JavaScript
117 lines
3.9 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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'use strict';
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/* exported initPromise, shutdownPromise,
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setE10sPrefs, unsetE10sPrefs, forceGC */
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/**
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* Set e10s related preferences in the test environment.
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* @return {Promise} promise that resolves when preferences are set.
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*/
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function setE10sPrefs() {
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return new Promise(resolve =>
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SpecialPowers.pushPrefEnv({
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set: [
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['browser.tabs.remote.autostart', true],
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['browser.tabs.remote.force-enable', true],
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['extensions.e10sBlocksEnabling', false]
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]
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}, resolve));
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}
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/**
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* Unset e10s related preferences in the test environment.
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* @return {Promise} promise that resolves when preferences are unset.
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*/
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function unsetE10sPrefs() {
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return new Promise(resolve => {
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SpecialPowers.popPrefEnv(resolve);
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});
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}
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// Load the shared-head file first.
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Services.scriptloader.loadSubScript(
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'chrome://mochitests/content/browser/accessible/tests/browser/shared-head.js',
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this);
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/**
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* Returns a promise that resolves when 'a11y-init-or-shutdown' event is fired.
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* @return {Promise} event promise evaluating to event's data
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*/
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function a11yInitOrShutdownPromise() {
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return new Promise(resolve => {
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let observe = (subject, topic, data) => {
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Services.obs.removeObserver(observe, 'a11y-init-or-shutdown');
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resolve(data);
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};
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Services.obs.addObserver(observe, 'a11y-init-or-shutdown', false);
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});
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}
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/**
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* Returns a promise that resolves when 'a11y-init-or-shutdown' event is fired
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* in content.
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* @param {Object} browser current "tabbrowser" element
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* @return {Promise} event promise evaluating to event's data
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*/
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function contentA11yInitOrShutdownPromise(browser) {
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return ContentTask.spawn(browser, {}, a11yInitOrShutdownPromise);
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}
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/**
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* A helper function that maps 'a11y-init-or-shutdown' event to a promise that
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* resovles or rejects depending on whether accessibility service is expected to
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* be initialized or shut down.
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*/
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function promiseOK(promise, expected) {
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return promise.then(flag =>
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flag === expected ? Promise.resolve() : Promise.reject());
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}
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/**
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* Checks and returns a promise that resolves when accessibility service is
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* initialized with the correct flag.
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* @param {?Object} contentBrowser optinal remove browser object that indicates
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* that accessibility service is expected to be
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* initialized in content process.
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* @return {Promise} promise that resolves when the accessibility
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* service initialized correctly.
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*/
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function initPromise(contentBrowser) {
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let a11yInitPromise = contentBrowser ?
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contentA11yInitOrShutdownPromise(contentBrowser) :
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a11yInitOrShutdownPromise();
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return promiseOK(a11yInitPromise, '1').then(
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() => ok(true, 'Service initialized correctly'),
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() => ok(false, 'Service shutdown incorrectly'));
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}
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/**
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* Checks and returns a promise that resolves when accessibility service is
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* shut down with the correct flag.
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* @param {?Object} contentBrowser optinal remove browser object that indicates
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* that accessibility service is expected to be
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* shut down in content process.
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* @return {Promise} promise that resolves when the accessibility
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* service shuts down correctly.
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*/
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function shutdownPromise(contentBrowser) {
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let a11yShutdownPromise = contentBrowser ?
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contentA11yInitOrShutdownPromise(contentBrowser) :
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a11yInitOrShutdownPromise();
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return promiseOK(a11yShutdownPromise, '0').then(
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() => ok(true, 'Service shutdown correctly'),
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() => ok(false, 'Service initialized incorrectly'));
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}
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/**
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* Force garbage collection.
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*/
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function forceGC() {
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Cu.forceCC();
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Cu.forceGC();
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}
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