1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/* 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 { PrefsTarget } = require('sdk/preferences/event-target');
const { get, set, reset } = require('sdk/preferences/service');
const { Loader } = require('sdk/test/loader');
const { setTimeout } = require('sdk/timers');
const root = PrefsTarget();
exports.testPrefsTarget = function(assert, done) {
let loader = Loader(module);
let pt = loader.require('sdk/preferences/event-target').PrefsTarget({});
let name = 'test';
assert.equal(get(name, ''), '', 'test pref is blank');
pt.once(name, function() {
assert.equal(pt.prefs[name], 2, 'test pref is 2');
pt.once(name, function() {
assert.fail('should not have heard a pref change');
});
loader.unload();
root.once(name, function() {
assert.pass('test pref was changed');
reset(name);
// NOTE: using setTimeout to make sure that the other listener had
// a chance to fail
// end test
setTimeout(done);
});
set(name, 3);
});
pt.prefs[name] = 2;
};
require('sdk/test').run(exports);
|
