@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
198 lines • 9.56 kB
JavaScript
"use strict";
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {skipUntil} */
describe('Observable.prototype.skipUntil', function () {
asDiagram('skipUntil')('should skip values until another observable notifies', function () {
var e1 = hot('--a--b--c--d--e----|');
var e1subs = '^ !';
var skip = hot('---------x------| ');
var skipSubs = '^ ! ';
var expected = ('-----------d--e----|');
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should emit element only after another observable emits', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = hot('-----------x----| ');
var skipSubs = '^ ! ';
var expected = ('--------------e--|');
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip value and raises error until another observable raises error', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ ! ';
var skip = hot('-------------# ');
var skipSubs = '^ ! ';
var expected = '-------------# ';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element when another observable does not emit and completes early', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = hot('------------| ');
var skipSubs = '^ ! ';
var expected = '-----------------|';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should allow unsubscribing explicitly and early', function () {
var e1 = hot('--a--b--c--d--e----|');
var unsub = ' ! ';
var e1subs = '^ ! ';
var skip = hot('-------------x--| ');
var skipSubs = '^ ! ';
var expected = ('---------- ');
expectObservable(e1.skipUntil(skip), unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var e1 = hot('--a--b--c--d--e----|');
var e1subs = '^ ! ';
var skip = hot('-------------x--| ');
var skipSubs = '^ ! ';
var expected = ('---------- ');
var unsub = ' ! ';
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.skipUntil(skip)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element when another observable is empty', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = cold('|');
var skipSubs = '(^!)';
var expected = '-----------------|';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should keep subscription to source, to wait for its eventual complete', function () {
var e1 = hot('------------------------------|');
var e1subs = '^ !';
var skip = hot('-------| ');
var skipSubs = '^ ! ';
var expected = '------------------------------|';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should not complete if source observable does not complete', function () {
var e1 = hot('-');
var e1subs = '^';
var skip = hot('-------------x--|');
var skipSubs = '^ !';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should not complete if source observable never completes', function () {
var e1 = cold('-');
var e1subs = '^';
var skip = hot('-------------x--|');
var skipSubs = '^ !';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should raise error if source does not completes when another observable raises error', function () {
var e1 = hot('-');
var e1subs = '^ !';
var skip = hot('-------------#');
var skipSubs = '^ !';
var expected = '-------------#';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should raise error if source never completes when another observable raises error', function () {
var e1 = cold('-');
var e1subs = '^ !';
var skip = hot('-------------#');
var skipSubs = '^ !';
var expected = '-------------#';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element and does not complete when another observable never completes', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = cold('-');
var skipSubs = '^ !';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element and does not complete when another observable does not completes', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = hot('-');
var skipSubs = '^ !';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element and does not complete when another observable completes after source', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = '^ !';
var skip = hot('------------------------|');
var skipSubs = '^ !';
var expected = '------------------';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should not completes if source does not completes when another observable does not emit', function () {
var e1 = hot('-');
var e1subs = '^';
var skip = hot('--------------|');
var skipSubs = '^ !';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should not completes if source and another observable both does not complete', function () {
var e1 = hot('-');
var e1subs = '^';
var skip = hot('-');
var skipSubs = '^';
var expected = '-';
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(skip.subscriptions).toBe(skipSubs);
});
it('should skip all element when another observable unsubscribed early before emit', function () {
var e1 = hot('--a--b--c--d--e--|');
var e1subs = ['^ !',
'^ !']; // for the explicit subscribe some lines below
var skip = new Rx.Subject();
var expected = '-';
e1.subscribe(function (x) {
if (x === 'd' && !skip.closed) {
skip.next('x');
}
skip.unsubscribe();
});
expectObservable(e1.skipUntil(skip)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
});
//# sourceMappingURL=skipUntil-spec.js.map