@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
111 lines • 4.77 kB
JavaScript
"use strict";
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {delay} */
describe('Observable.prototype.delay', function () {
asDiagram('delay(20)')('should delay by specified timeframe', function () {
var e1 = hot('---a--b--| ');
var t = time('--| ');
var expected = '-----a--b--|';
var subs = '^ !';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should delay by absolute time period', function () {
var e1 = hot('--a--b--| ');
var t = time('---| ');
var expected = '-----a--b--|';
var subs = '^ !';
var absoluteDelay = new Date(rxTestScheduler.now() + t);
var result = e1.delay(absoluteDelay, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should delay by absolute time period after subscription', function () {
var e1 = hot('---^--a--b--| ');
var t = time('---| ');
var expected = '------a--b--|';
var subs = '^ !';
var absoluteDelay = new Date(rxTestScheduler.now() + t);
var result = e1.delay(absoluteDelay, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should raise error when source raises error', function () {
var e1 = hot('---a---b---#');
var t = time('---| ');
var expected = '------a---b#';
var subs = '^ !';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should raise error when source raises error', function () {
var e1 = hot('--a--b--#');
var t = time('---| ');
var expected = '-----a--#';
var subs = '^ !';
var absoluteDelay = new Date(rxTestScheduler.now() + t);
var result = e1.delay(absoluteDelay, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should raise error when source raises error after subscription', function () {
var e1 = hot('---^---a---b---#');
var t = time('---| ');
var expected = '-------a---b#';
var e1Sub = '^ !';
var absoluteDelay = new Date(rxTestScheduler.now() + t);
var result = e1.delay(absoluteDelay, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1Sub);
});
it('should delay when source does not emits', function () {
var e1 = hot('----| ');
var t = time('---|');
var expected = '-------|';
var subs = '^ !';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should delay when source is empty', function () {
var e1 = cold('|');
var t = time('---|');
var expected = '---|';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result).toBe(expected);
});
it('should not complete when source does not completes', function () {
var e1 = hot('---a---b---------');
var t = time('---| ');
var expected = '------a---b------';
var unsub = '----------------!';
var subs = '^ !';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var e1 = hot('---a---b----');
var t = time('---| ');
var e1subs = '^ ! ';
var expected = '------a-- ';
var unsub = ' ! ';
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.delay(t, rxTestScheduler)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should not complete when source never completes', function () {
var e1 = cold('-');
var t = time('---|');
var expected = '-';
var result = e1.delay(t, rxTestScheduler);
expectObservable(result).toBe(expected);
});
});
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