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comparison: addon-sdk/source/test/test-dispatcher.js
addon-sdk/source/test/test-dispatcher.js
- changeset 0
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| -1:000000000000 | 0:bcfcee801830 |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 */ | |
| 5 "use strict"; | |
| 6 | |
| 7 const { dispatcher } = require("sdk/util/dispatcher"); | |
| 8 | |
| 9 exports["test dispatcher API"] = assert => { | |
| 10 const dispatch = dispatcher(); | |
| 11 | |
| 12 assert.equal(typeof(dispatch), "function", | |
| 13 "dispatch is a function"); | |
| 14 | |
| 15 assert.equal(typeof(dispatch.define), "function", | |
| 16 "dispatch.define is a function"); | |
| 17 | |
| 18 assert.equal(typeof(dispatch.implement), "function", | |
| 19 "dispatch.implement is a function"); | |
| 20 | |
| 21 assert.equal(typeof(dispatch.when), "function", | |
| 22 "dispatch.when is a function"); | |
| 23 }; | |
| 24 | |
| 25 exports["test dispatcher"] = assert => { | |
| 26 const isDuck = dispatcher(); | |
| 27 | |
| 28 const quacks = x => x && typeof(x.quack) === "function"; | |
| 29 | |
| 30 const Duck = function() {}; | |
| 31 const Goose = function() {}; | |
| 32 | |
| 33 const True = _ => true; | |
| 34 const False = _ => false; | |
| 35 | |
| 36 | |
| 37 | |
| 38 isDuck.define(Goose, False); | |
| 39 isDuck.define(Duck, True); | |
| 40 isDuck.when(quacks, True); | |
| 41 | |
| 42 assert.equal(isDuck(new Goose()), false, | |
| 43 "Goose ain't duck"); | |
| 44 | |
| 45 assert.equal(isDuck(new Duck()), true, | |
| 46 "Ducks are ducks"); | |
| 47 | |
| 48 assert.equal(isDuck({ quack: () => "Quaaaaaack!" }), true, | |
| 49 "It's a duck if it quacks"); | |
| 50 | |
| 51 | |
| 52 assert.throws(() => isDuck({}), /Type does not implements method/, "not implemneted"); | |
| 53 | |
| 54 isDuck.define(Object, False); | |
| 55 | |
| 56 assert.equal(isDuck({}), false, | |
| 57 "Ain't duck if it does not quacks!"); | |
| 58 }; | |
| 59 | |
| 60 exports["test redefining fails"] = assert => { | |
| 61 const isPM = dispatcher(); | |
| 62 const isAfternoon = time => time.getHours() > 12; | |
| 63 | |
| 64 isPM.when(isAfternoon, _ => true); | |
| 65 | |
| 66 assert.equal(isPM(new Date(Date.parse("Jan 23, 1985, 13:20:00"))), true, | |
| 67 "yeap afternoon"); | |
| 68 assert.equal(isPM({ getHours: _ => 17 }), true, | |
| 69 "seems like afternoon"); | |
| 70 | |
| 71 assert.throws(() => isPM.when(isAfternoon, x => x > 12 && x < 24), | |
| 72 /Already implemented for the given predicate/, | |
| 73 "can't redefine on same predicate"); | |
| 74 | |
| 75 }; | |
| 76 | |
| 77 require("sdk/test").run(exports); |
