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data-ice="title">spec-js/observables/interval-spec.js</h1> <pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">&quot;use strict&quot;; var chai_1 = require(&apos;chai&apos;); var sinon = require(&apos;sinon&apos;); var Rx = require(&apos;../../dist/cjs/Rx&apos;); var Observable = Rx.Observable; var asap = Rx.Scheduler.asap; var queue = Rx.Scheduler.queue; var animationFrame = Rx.Scheduler.animationFrame; /** @test {interval} */ describe(&apos;Observable.interval&apos;, function () { asDiagram(&apos;interval(1000)&apos;)(&apos;should create an observable emitting periodically&apos;, function () { var e1 = Observable.interval(20, rxTestScheduler) .take(6) // make it actually finite, so it can be rendered .concat(Observable.never()); // but pretend it&apos;s infinite by not completing var expected = &apos;--a-b-c-d-e-f-&apos;; var values = { a: 0, b: 1, c: 2, d: 3, e: 4, f: 5, }; expectObservable(e1).toBe(expected, values); }); it(&apos;should set up an interval&apos;, function () { var expected = &apos;----------0---------1---------2---------3---------4---------5---------6-----&apos;; expectObservable(Observable.interval(100, rxTestScheduler)).toBe(expected, [0, 1, 2, 3, 4, 5, 6]); }); it(&apos;should specify default scheduler if incorrect scheduler specified&apos;, function () { var scheduler = Observable.interval(10, sinon.stub()).scheduler; chai_1.expect(scheduler).to.equal(Rx.Scheduler.async); }); it(&apos;should emit when relative interval set to zero&apos;, function () { var e1 = Observable.interval(0, rxTestScheduler).take(7); var expected = &apos;(0123456|)&apos;; expectObservable(e1).toBe(expected, [0, 1, 2, 3, 4, 5, 6]); }); it(&apos;should consider negative interval as zero&apos;, function () { var e1 = Observable.interval(-1, rxTestScheduler).take(7); var expected = &apos;(0123456|)&apos;; expectObservable(e1).toBe(expected, [0, 1, 2, 3, 4, 5, 6]); }); it(&apos;should emit values until unsubscribed&apos;, function (done) { var values = []; var expected = [0, 1, 2, 3, 4, 5, 6]; var e1 = Observable.interval(5); var subscription = e1.subscribe(function (x) { values.push(x); if (x === 6) { subscription.unsubscribe(); chai_1.expect(values).to.deep.equal(expected); done(); } }, function (err) { done(new Error(&apos;should not be called&apos;)); }, function () { done(new Error(&apos;should not be called&apos;)); }); }); it(&apos;should create an observable emitting periodically with the AsapScheduler&apos;, function (done) { var sandbox = sinon.sandbox.create(); var fakeTimer = sandbox.useFakeTimers(); var interval = 10; var events = [0, 1, 2, 3, 4, 5]; var source = Observable.interval(interval, asap).take(6); source.subscribe({ next: function (x) { chai_1.expect(x).to.equal(events.shift()); }, error: function (e) { sandbox.restore(); done(e); }, complete: function () { chai_1.expect(asap.actions.length).to.equal(0); chai_1.expect(asap.scheduled).to.equal(undefined); sandbox.restore(); done(); } }); var i = -1, n = events.length; while (++i &lt; n) { fakeTimer.tick(interval); } }); it(&apos;should create an observable emitting periodically with the QueueScheduler&apos;, function (done) { var sandbox = sinon.sandbox.create(); var fakeTimer = sandbox.useFakeTimers(); var interval = 10; var events = [0, 1, 2, 3, 4, 5]; var source = Observable.interval(interval, queue).take(6); source.subscribe({ next: function (x) { chai_1.expect(x).to.equal(events.shift()); }, error: function (e) { sandbox.restore(); done(e); }, complete: function () { chai_1.expect(queue.actions.length).to.equal(0); chai_1.expect(queue.scheduled).to.equal(undefined); sandbox.restore(); done(); } }); var i = -1, n = events.length; while (++i &lt; n) { fakeTimer.tick(interval); } }); it(&apos;should create an observable emitting periodically with the AnimationFrameScheduler&apos;, function (done) { var sandbox = sinon.sandbox.create(); var fakeTimer = sandbox.useFakeTimers(); var interval = 10; var events = [0, 1, 2, 3, 4, 5]; var source = Observable.interval(interval, animationFrame).take(6); source.subscribe({ next: function (x) { chai_1.expect(x).to.equal(events.shift()); }, error: function (e) { sandbox.restore(); done(e); }, complete: function () { chai_1.expect(animationFrame.actions.length).to.equal(0); chai_1.expect(animationFrame.scheduled).to.equal(undefined); sandbox.restore(); done(); } }); var i = -1, n = events.length; while (++i &lt; n) { fakeTimer.tick(interval); } }); }); //# sourceMappingURL=interval-spec.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script 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