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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
const PREF_ACCESSIBILITY_FORCE_DISABLED = "accessibility.force_disabled";
add_task(async function testForceDisable() {
ok(
!Services.appinfo.accessibilityEnabled,
"Accessibility is disabled by default"
);
info("Reset force disabled preference");
Services.prefs.clearUserPref(PREF_ACCESSIBILITY_FORCE_DISABLED);
info("Enable accessibility service via XPCOM");
let [a11yInitObserver, a11yInit] = initAccService();
await a11yInitObserver;
let accService = Cc["@mozilla.org/accessibilityService;1"].getService(
Ci.nsIAccessibilityService
);
await a11yInit;
ok(Services.appinfo.accessibilityEnabled, "Accessibility is enabled");
info("Force disable a11y service via preference");
let [a11yShutdownObserver, a11yShutdown] = shutdownAccService();
await a11yShutdownObserver;
Services.prefs.setIntPref(PREF_ACCESSIBILITY_FORCE_DISABLED, 1);
await a11yShutdown;
ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled");
info("Attempt to get an instance of a11y service and call its method.");
accService = Cc["@mozilla.org/accessibilityService;1"].getService(
Ci.nsIAccessibilityService
);
try {
accService.getAccesssibleFor(document);
ok(false, "getAccesssibleFor should've triggered an exception.");
} catch (e) {
ok(
true,
"getAccesssibleFor triggers an exception as a11y service is shutdown."
);
}
ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled");
info("Reset force disabled preference");
Services.prefs.clearUserPref(PREF_ACCESSIBILITY_FORCE_DISABLED);
info("Create a11y service again");
[a11yInitObserver, a11yInit] = initAccService();
await a11yInitObserver;
accService = Cc["@mozilla.org/accessibilityService;1"].getService(
Ci.nsIAccessibilityService
);
await a11yInit;
ok(Services.appinfo.accessibilityEnabled, "Accessibility is enabled");
info("Remove all references to a11y service");
[a11yShutdownObserver, a11yShutdown] = shutdownAccService();
await a11yShutdownObserver;
accService = null;
forceGC();
await a11yShutdown;
ok(!Services.appinfo.accessibilityEnabled, "Accessibility is disabled");
});
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