The Tor Browser / file comparison
comparison: services/common/tests/unit/test_async_chain.js
services/common/tests/unit/test_async_chain.js
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:aac81493e0a0 |
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| 1 /* Any copyright is dedicated to the Public Domain. | |
| 2 * http://creativecommons.org/publicdomain/zero/1.0/ */ | |
| 3 | |
| 4 Cu.import("resource://services-common/async.js"); | |
| 5 | |
| 6 function run_test() { | |
| 7 _("Chain a few async methods, making sure the 'this' object is correct."); | |
| 8 | |
| 9 let methods = { | |
| 10 save: function(x, callback) { | |
| 11 this.x = x; | |
| 12 callback(x); | |
| 13 }, | |
| 14 addX: function(x, callback) { | |
| 15 callback(x + this.x); | |
| 16 }, | |
| 17 double: function(x, callback) { | |
| 18 callback(x * 2); | |
| 19 }, | |
| 20 neg: function(x, callback) { | |
| 21 callback(-x); | |
| 22 } | |
| 23 }; | |
| 24 methods.chain = Async.chain; | |
| 25 | |
| 26 // ((1 + 1 + 1) * (-1) + 1) * 2 + 1 = -3 | |
| 27 methods.chain(methods.save, methods.addX, methods.addX, methods.neg, | |
| 28 methods.addX, methods.double, methods.addX, methods.save)(1); | |
| 29 do_check_eq(methods.x, -3); | |
| 30 } |
