services/common/tests/unit/test_async_chain.js@6474c204b198 (annotated)
services/common/tests/unit/test_async_chain.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* Any copyright is dedicated to the Public Domain. |
| michael@0 | 2 | * http://creativecommons.org/publicdomain/zero/1.0/ */ |
| michael@0 | 3 | |
| michael@0 | 4 | Cu.import("resource://services-common/async.js"); |
| michael@0 | 5 | |
| michael@0 | 6 | function run_test() { |
| michael@0 | 7 | _("Chain a few async methods, making sure the 'this' object is correct."); |
| michael@0 | 8 | |
| michael@0 | 9 | let methods = { |
| michael@0 | 10 | save: function(x, callback) { |
| michael@0 | 11 | this.x = x; |
| michael@0 | 12 | callback(x); |
| michael@0 | 13 | }, |
| michael@0 | 14 | addX: function(x, callback) { |
| michael@0 | 15 | callback(x + this.x); |
| michael@0 | 16 | }, |
| michael@0 | 17 | double: function(x, callback) { |
| michael@0 | 18 | callback(x * 2); |
| michael@0 | 19 | }, |
| michael@0 | 20 | neg: function(x, callback) { |
| michael@0 | 21 | callback(-x); |
| michael@0 | 22 | } |
| michael@0 | 23 | }; |
| michael@0 | 24 | methods.chain = Async.chain; |
| michael@0 | 25 | |
| michael@0 | 26 | // ((1 + 1 + 1) * (-1) + 1) * 2 + 1 = -3 |
| michael@0 | 27 | methods.chain(methods.save, methods.addX, methods.addX, methods.neg, |
| michael@0 | 28 | methods.addX, methods.double, methods.addX, methods.save)(1); |
| michael@0 | 29 | do_check_eq(methods.x, -3); |
| michael@0 | 30 | } |
