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<div class="content" data-ice="content"><h1 data-ice="title">spec-js/operators/throttleTime-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 Observable = Rx.Observable;
/** @test {throttleTime} */
describe('Observable.prototype.throttleTime', function () {
asDiagram('throttleTime(50)')('should immediately emit the first value in each time window', function () {
var e1 = hot('-a-x-y----b---x-cx---|');
var subs = '^ !';
var expected = '-a--------b-----c----|';
var result = e1.throttleTime(50, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should throttle events by 50 time units', function (done) {
Observable.of(1, 2, 3).throttleTime(50)
.subscribe(function (x) {
chai_1.expect(x).to.equal(1);
}, null, done);
});
it('should throttle events multiple times', function () {
var expected = ['1-0', '2-0'];
Observable.concat(Observable.timer(0, 10, rxTestScheduler).take(3).map(function (x) { return '1-' + x; }), Observable.timer(80, 10, rxTestScheduler).take(5).map(function (x) { return '2-' + x; }))
.throttleTime(50, rxTestScheduler)
.subscribe(function (x) {
chai_1.expect(x).to.equal(expected.shift());
});
rxTestScheduler.flush();
});
it('should simply mirror the source if values are not emitted often enough', function () {
var e1 = hot('-a--------b-----c----|');
var subs = '^ !';
var expected = '-a--------b-----c----|';
expectObservable(e1.throttleTime(50, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should handle a busy producer emitting a regular repeating sequence', function () {
var e1 = hot('abcdefabcdefabcdefabcdefa|');
var subs = '^ !';
var expected = 'a-----a-----a-----a-----a|';
expectObservable(e1.throttleTime(50, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should complete when source does not emit', function () {
var e1 = hot('-----|');
var subs = '^ !';
var expected = '-----|';
expectObservable(e1.throttleTime(50, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should raise error when source does not emit and raises error', function () {
var e1 = hot('-----#');
var subs = '^ !';
var expected = '-----#';
expectObservable(e1.throttleTime(10, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should handle an empty source', function () {
var e1 = cold('|');
var subs = '(^!)';
var expected = '|';
expectObservable(e1.throttleTime(30, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should handle a never source', function () {
var e1 = cold('-');
var subs = '^';
var expected = '-';
expectObservable(e1.throttleTime(30, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should handle a throw source', function () {
var e1 = cold('#');
var subs = '(^!)';
var expected = '#';
expectObservable(e1.throttleTime(30, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should throttle and does not complete when source does not completes', function () {
var e1 = hot('-a--(bc)-------d----------------');
var unsub = ' !';
var subs = '^ !';
var expected = '-a-------------d----------------';
expectObservable(e1.throttleTime(50, rxTestScheduler), unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var e1 = hot('-a--(bc)-------d----------------');
var subs = '^ !';
var expected = '-a-------------d----------------';
var unsub = ' !';
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.throttleTime(50, rxTestScheduler)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should throttle values until source raises error', function () {
var e1 = hot('-a--(bc)-------d---------------#');
var subs = '^ !';
var expected = '-a-------------d---------------#';
expectObservable(e1.throttleTime(50, rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
});
//# sourceMappingURL=throttleTime-spec.js.map</code></pre>
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