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data-ice="title">spec-js/observables/IteratorObservable-spec.js</h1> <pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">"use strict"; var chai_1 = require('chai'); var Rx = require('../../dist/cjs/Rx'); var queue_1 = require('../../dist/cjs/scheduler/queue'); var IteratorObservable_1 = require('../../dist/cjs/observable/IteratorObservable'); describe('IteratorObservable', function () { it('should create an Observable via constructor', function () { var source = new IteratorObservable_1.IteratorObservable([]); chai_1.expect(source instanceof IteratorObservable_1.IteratorObservable).to.be.true; }); it('should create IteratorObservable via static create function', function () { var s = new IteratorObservable_1.IteratorObservable([]); var r = IteratorObservable_1.IteratorObservable.create([]); chai_1.expect(s).to.deep.equal(r); }); it('should not accept null (or truthy-equivalent to null) iterator', function () { chai_1.expect(function () { IteratorObservable_1.IteratorObservable.create(null); }).to.throw(Error, 'iterator cannot be null.'); chai_1.expect(function () { IteratorObservable_1.IteratorObservable.create(void 0); }).to.throw(Error, 'iterator cannot be null.'); }); it('should not accept boolean as iterator', function () { chai_1.expect(function () { IteratorObservable_1.IteratorObservable.create(false); }).to.throw(Error, 'object is not iterable'); }); it('should emit members of an array iterator', function (done) { var expected = [10, 20, 30, 40]; IteratorObservable_1.IteratorObservable.create([10, 20, 30, 40]) .subscribe(function (x) { chai_1.expect(x).to.equal(expected.shift()); }, function (x) { done(new Error('should not be called')); }, function () { chai_1.expect(expected.length).to.equal(0); done(); }); }); it('should finalize generators if the subscription ends', function () { var iterator = { finalized: false, next: function () { return { value: 'duck', done: false }; }, return: function () { this.finalized = true; } }; var iterable = (_a = {}, _a[Rx.Symbol.iterator] = function () { return iterator; }, _a ); var results = []; IteratorObservable_1.IteratorObservable.create(iterable) .take(3) .subscribe(function (x) { return results.push(x); }, null, function () { return results.push('GOOSE!'); }); chai_1.expect(results).to.deep.equal(['duck', 'duck', 'duck', 'GOOSE!']); chai_1.expect(iterator.finalized).to.be.true; var _a; }); it('should finalize generators if the subscription and it is scheduled', function () { var iterator = { finalized: false, next: function () { return { value: 'duck', done: false }; }, return: function () { this.finalized = true; } }; var iterable = (_a = {}, _a[Rx.Symbol.iterator] = function () { return iterator; }, _a ); var results = []; IteratorObservable_1.IteratorObservable.create(iterable, queue_1.queue) .take(3) .subscribe(function (x) { return results.push(x); }, null, function () { return results.push('GOOSE!'); }); chai_1.expect(results).to.deep.equal(['duck', 'duck', 'duck', 'GOOSE!']); chai_1.expect(iterator.finalized).to.be.true; var _a; }); it('should emit members of an array iterator on a particular scheduler', function () { var source = IteratorObservable_1.IteratorObservable.create([10, 20, 30, 40], rxTestScheduler); var values = { a: 10, b: 20, c: 30, d: 40 }; expectObservable(source).toBe('(abcd|)', values); }); it('should emit members of an array iterator on a particular scheduler, ' + 'but is unsubscribed early', function (done) { var expected = [10, 20, 30, 40]; var source = IteratorObservable_1.IteratorObservable.create([10, 20, 30, 40], Rx.Scheduler.queue); var subscriber = Rx.Subscriber.create(function (x) { chai_1.expect(x).to.equal(expected.shift()); if (x === 30) { subscriber.unsubscribe(); done(); } }, function (x) { done(new Error('should not be called')); }, function () { done(new Error('should not be called')); }); source.subscribe(subscriber); }); it('should emit characters of a string iterator', function (done) { var expected = ['f', 'o', 'o']; IteratorObservable_1.IteratorObservable.create('foo') .subscribe(function (x) { chai_1.expect(x).to.equal(expected.shift()); }, function (x) { done(new Error('should not be called')); }, function () { chai_1.expect(expected.length).to.equal(0); done(); }); }); it('should be possible to unsubscribe in the middle of the iteration', function (done) { var expected = [10, 20, 30]; var subscriber = Rx.Subscriber.create(function (x) { chai_1.expect(x).to.equal(expected.shift()); if (x === 30) { subscriber.unsubscribe(); done(); } }, function (x) { done(new Error('should not be called')); }, function () { done(new Error('should not be called')); }); IteratorObservable_1.IteratorObservable.create([10, 20, 30, 40, 50, 60]).subscribe(subscriber); }); }); //# sourceMappingURL=IteratorObservable-spec.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span 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