The Tor Browser: comparison addon-sdk/source/test/test-promise.js

comparison: addon-sdk/source/test/test-promise.js

addon-sdk/source/test/test-promise.js

branch: TOR_BUG_9701
changeset 10: ac0c01689b40

equal deleted inserted replaced

--1:000000000000
+:5571ac997877
+/* 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 { Cc, Cu, Ci } = require('chrome');
+const { setTimeout } = require('sdk/timers');
+const { prefixURI, name } = require('@loader/options');
+const addonPromiseURI = prefixURI + name + '/lib/sdk/core/promise.js';
+const builtPromiseURI = 'resource://gre/modules/commonjs/sdk/core/promise.js';
+let { Promise, defer, resolve, reject, all, promised } = require('sdk/core/promise');
+exports['test all observers are notified'] = function(assert, done) {
+let expected = 'Taram pam param!';
+let deferred = defer();
+let pending = 10, i = 0;
+function resolved(value) {
+assert.equal(value, expected, 'value resolved as expected: #' + pending);
+if (!--pending) done();
+}
+while (i++ < pending) deferred.promise.then(resolved);
+deferred.resolve(expected);
+};
+exports['test exceptions dont stop notifications'] = function(assert, done) {
+let threw = false, boom = Error('Boom!');
+let deferred = defer();
+let promise2 = deferred.promise.then(function() {
+threw = true;
+throw boom;
+});
+deferred.promise.then(function() {
+assert.ok(threw, 'observer is called even though previos one threw');
+promise2.then(function() {
+assert.fail('should not resolve');
+}, function(reason) {
+assert.equal(reason, boom, 'rejects to thrown error');
+done();
+});
+});
+deferred.resolve('go!');
+};
+exports['test subsequent resolves are ignored'] = function(assert, done) {
+let deferred = defer();
+deferred.resolve(1);
+deferred.resolve(2);
+deferred.reject(3);
+deferred.promise.then(function(actual) {
+assert.equal(actual, 1, 'resolves to first value');
+}, function() {
+assert.fail('must not reject');
+});
+deferred.promise.then(function(actual) {
+assert.equal(actual, 1, 'subsequent resolutions are ignored');
+done();
+}, function() {
+assert.fail('must not reject');
+});
+};
+exports['test subsequent rejections are ignored'] = function(assert, done) {
+let deferred = defer();
+deferred.reject(1);
+deferred.resolve(2);
+deferred.reject(3);
+deferred.promise.then(function(actual) {
+assert.fail('must not resolve');
+}, function(actual) {
+assert.equal(actual, 1, 'must reject to first');
+});
+deferred.promise.then(function(actual) {
+assert.fail('must not resolve');
+}, function(actual) {
+assert.equal(actual, 1, 'must reject to first');
+done();
+});
+};
+exports['test error recovery'] = function(assert, done) {
+let boom = Error('Boom!');
+let deferred = defer();
+deferred.promise.then(function() {
+assert.fail('rejected promise should not resolve');
+}, function(reason) {
+assert.equal(reason, boom, 'rejection reason delivered');
+return 'recovery';
+}).then(function(value) {
+assert.equal(value, 'recovery', 'error handled by a handler');
+done();
+});
+deferred.reject(boom);
+};
+exports['test error recovery with promise'] = function(assert, done) {
+let deferred = defer();
+deferred.promise.then(function() {
+assert.fail('must reject');
+}, function(actual) {
+assert.equal(actual, 'reason', 'rejected');
+let deferred = defer();
+deferred.resolve('recovery');
+return deferred.promise;
+}).then(function(actual) {
+assert.equal(actual, 'recovery', 'recorvered via promise');
+let deferred = defer();
+deferred.reject('error');
+return deferred.promise;
+}).then(null, function(actual) {
+assert.equal(actual, 'error', 'rejected via promise');
+let deferred = defer();
+deferred.reject('end');
+return deferred.promise;
+}).then(null, function(actual) {
+assert.equal(actual, 'end', 'rejeced via promise');
+done();
+});
+deferred.reject('reason');
+};
+exports['test propagation'] = function(assert, done) {
+let d1 = defer(), d2 = defer(), d3 = defer();
+d1.promise.then(function(actual) {
+assert.equal(actual, 'expected', 'resolves to expected value');
+done();
+});
+d1.resolve(d2.promise);
+d2.resolve(d3.promise);
+d3.resolve('expected');
+};
+exports['test chaining'] = function(assert, done) {
+let boom = Error('boom'), brax = Error('braxXXx');
+let deferred = defer();
+deferred.promise.then().then().then(function(actual) {
+assert.equal(actual, 2, 'value propagates unchanged');
+return actual + 2;
+}).then(null, function(reason) {
+assert.fail('should not reject');
+}).then(function(actual) {
+assert.equal(actual, 4, 'value propagates through if not handled');
+throw boom;
+}).then(function(actual) {
+assert.fail('exception must reject promise');
+}).then().then(null, function(actual) {
+assert.equal(actual, boom, 'reason propagates unchanged');
+throw brax;
+}).then().then(null, function(actual) {
+assert.equal(actual, brax, 'reason changed becase of exception');
+return 'recovery';
+}).then(function(actual) {
+assert.equal(actual, 'recovery', 'recovered from error');
+done();
+});
+deferred.resolve(2);
+};
+exports['test reject'] = function(assert, done) {
+let expected = Error('boom');
+reject(expected).then(function() {
+assert.fail('should reject');
+}, function(actual) {
+assert.equal(actual, expected, 'rejected with expected reason');
+}).then(done, assert.fail);
+};
+exports['test resolve to rejected'] = function(assert, done) {
+let expected = Error('boom');
+let deferred = defer();
+deferred.promise.then(function() {
+assert.fail('should reject');
+}, function(actual) {
+assert.equal(actual, expected, 'rejected with expected failure');
+}).then(done, assert.fail);
+deferred.resolve(reject(expected));
+};
+exports['test resolve'] = function(assert, done) {
+let expected = 'value';
+resolve(expected).then(function(actual) {
+assert.equal(actual, expected, 'resolved as expected');
+}).catch(assert.fail).then(done);
+};
+exports['test promised with normal args'] = function(assert, done) {
+let sum = promised((x, y) => x + y );
+sum(7, 8).then(function(actual) {
+assert.equal(actual, 7 + 8, 'resolves as expected');
+}).catch(assert.fail).then(done);
+};
+exports['test promised with promise args'] = function(assert, done) {
+let sum = promised((x, y) => x + y );
+let deferred = defer();
+sum(11, deferred.promise).then(function(actual) {
+assert.equal(actual, 11 + 24, 'resolved as expected');
+}).catch(assert.fail).then(done);
+deferred.resolve(24);
+};
+exports['test promised error handleing'] = function(assert, done) {
+let expected = Error('boom');
+let f = promised(function() {
+throw expected;
+});
+f().then(function() {
+assert.fail('should reject');
+}, function(actual) {
+assert.equal(actual, expected, 'rejected as expected');
+}).catch(assert.fail).then(done);
+};
+exports['test errors in promise resolution handlers are propagated'] = function(assert, done) {
+var expected = Error('Boom');
+var { promise, resolve } = defer();
+promise.then(function() {
+throw expected;
+}).then(function() {
+return undefined;
+}).then(null, function(actual) {
+assert.equal(actual, expected, 'rejected as expected');
+}).then(done, assert.fail);
+resolve({});
+};
+exports['test return promise form promised'] = function(assert, done) {
+let f = promised(function() {
+return resolve(17);
+});
+f().then(function(actual) {
+assert.equal(actual, 17, 'resolves to a promise resolution');
+}).catch(assert.fail).then(done);
+};
+exports['test promised returning failure'] = function(assert, done) {
+let expected = Error('boom');
+let f = promised(function() {
+return reject(expected);
+});
+f().then(function() {
+assert.fail('must reject');
+}, function(actual) {
+assert.equal(actual, expected, 'rejects with expected reason');
+}).catch(assert.fail).then(done);
+};
+/*
+* Changed for compliance in Bug 881047, promises are now always async
+*/
+exports['test promises are always async'] = function (assert, done) {
+let runs = 0;
+resolve(1)
+.then(val => ++runs)
+.catch(assert.fail).then(done);
+assert.equal(runs, 0, 'resolutions are called in following tick');
+};
+/*
+* Changed for compliance in Bug 881047, promised's are now non greedy
+*/
+exports['test promised are not greedy'] = function(assert, done) {
+let runs = 0;
+promised(() => ++runs)()
+.catch(assert.fail).then(done);
+assert.equal(runs, 0, 'promised does not run task right away');
+};
+exports['test arrays should not flatten'] = function(assert, done) {
+let a = defer();
+let b = defer();
+let combine = promised(function(str, arr) {
+assert.equal(str, 'Hello', 'Array was not flattened');
+assert.deepEqual(arr, [ 'my', 'friend' ]);
+});
+combine(a.promise, b.promise).catch(assert.fail).then(done);
+a.resolve('Hello');
+b.resolve([ 'my', 'friend' ]);
+};
+exports['test `all` for all promises'] = function (assert, done) {
+all([
+resolve(5), resolve(7), resolve(10)
+]).then(function (val) {
+assert.equal(
+val[0] === 5 &&
+val[1] === 7 &&
+val[2] === 10
+, true, 'return value contains resolved promises values');
+done();
+}, function () {
+assert.fail('should not call reject function');
+});
+};
+exports['test `all` aborts upon first reject'] = function (assert, done) {
+all([
+resolve(5), reject('error'), delayedResolve()
+]).then(function (val) {
+assert.fail('Successful resolve function should not be called');
+}, function (reason) {
+assert.equal(reason, 'error', 'should reject the `all` promise');
+done();
+});
+function delayedResolve () {
+let deferred = defer();
+setTimeout(deferred.resolve, 50);
+return deferred.promise;
+}
+};
+exports['test `all` with array containing non-promise'] = function (assert, done) {
+all([
+resolve(5), resolve(10), 925
+]).then(function (val) {
+assert.equal(val[2], 925, 'non-promises should pass-through value');
+done();
+}, function () {
+assert.fail('should not be rejected');
+});
+};
+exports['test `all` should resolve with an empty array'] = function (assert, done) {
+all([]).then(function (val) {
+assert.equal(Array.isArray(val), true, 'should return array in resolved');
+assert.equal(val.length, 0, 'array should be empty in resolved');
+done();
+}, function () {
+assert.fail('should not be rejected');
+});
+};
+exports['test `all` with multiple rejected'] = function (assert, done) {
+all([
+reject('error1'), reject('error2'), reject('error3')
+]).then(function (value) {
+assert.fail('should not be successful');
+}, function (reason) {
+assert.equal(reason, 'error1', 'should reject on first promise reject');
+done();
+});
+};
+exports['test Promise constructor resolve'] = function (assert, done) {
+var isAsync = true;
+new Promise(function (resolve, reject) {
+resolve(5);
+}).then(x => {
+isAsync = false;
+assert.equal(x, 5, 'Promise constructor resolves correctly');
+}).catch(assert.fail).then(done);
+assert.ok(isAsync, 'Promise constructor runs async');
+};
+exports['test Promise constructor reject'] = function (assert, done) {
+new Promise(function (resolve, reject) {
+reject(new Error('deferred4life'));
+}).then(assert.fail, (err) => {
+assert.equal(err.message, 'deferred4life', 'Promise constructor rejects correctly');
+}).catch(assert.fail).then(done);
+};
+exports['test JSM Load and API'] = function (assert, done) {
+// Use addon URL when loading from cfx/local:
+// resource://90111c90-c31e-4dc7-ac35-b65947434435-at-jetpack/addon-sdk/lib/sdk/core/promise.js
+// Use built URL when testing on try, etc.
+// resource://gre/modules/commonjs/sdk/core/promise.js
+try {
+var { Promise } = Cu.import(addonPromiseURI, {});
+} catch (e) {
+var { Promise } = Cu.import(builtPromiseURI, {});
+}
+testEnvironment(Promise, assert, done, 'JSM');
+};
+exports['test mozIJSSubScriptLoader exporting'] = function (assert, done) {
+let { Services } = Cu.import('resource://gre/modules/Services.jsm', {});
+let systemPrincipal = Services.scriptSecurityManager.getSystemPrincipal();
+let Promise = new Cu.Sandbox(systemPrincipal);
+let loader = Cc['@mozilla.org/moz/jssubscript-loader;1']
+.getService(Ci.mozIJSSubScriptLoader);
+// Use addon URL when loading from cfx/local:
+// resource://90111c90-c31e-4dc7-ac35-b65947434435-at-jetpack/addon-sdk/lib/sdk/core/promise.js
+// Use built URL when testing on try, etc.
+// resource://gre/modules/commonjs/sdk/core/promise.js
+try {
+loader.loadSubScript(addonPromiseURI, Promise);
+} catch (e) {
+loader.loadSubScript(builtPromiseURI, Promise);
+}
+testEnvironment(Promise, assert, done, 'mozIJSSubScript');
+};
+function testEnvironment ({all, resolve, defer, reject, promised}, assert, done, type) {
+all([resolve(5), resolve(10), 925]).then(val => {
+assert.equal(val[0], 5, 'promise#all works ' + type);
+assert.equal(val[1], 10, 'promise#all works ' + type);
+assert.equal(val[2], 925, 'promise#all works ' + type);
+return resolve(1000);
+}).then(value => {
+assert.equal(value, 1000, 'promise#resolve works ' + type);
+return reject('testing reject');
+}).then(null, reason => {
+assert.equal(reason, 'testing reject', 'promise#reject works ' + type);
+let deferred = defer();
+setTimeout(() => deferred.resolve('\\m/'), 10);
+return deferred.promise;
+}).then(value => {
+assert.equal(value, '\\m/', 'promise#defer works ' + type);
+return promised(x => x * x)(5);
+}).then(value => {
+assert.equal(value, 25, 'promise#promised works ' + type);
+}).then(done, assert.fail);
+}
+require("sdk/test").run(exports);