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<div class="content" data-ice="content"><h1 data-ice="title">spec-js/operators/takeUntil-spec.js</h1>
<pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">"use strict";
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {takeUntil} */
describe('Observable.prototype.takeUntil', function () {
asDiagram('takeUntil')('should take values until notifier emits', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ ! ';
var e2 = hot('-------------z--| ');
var e2subs = '^ ! ';
var expected = '--a--b--c--d-| ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should take values and raises error when notifier raises error', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ ! ';
var e2 = hot('-------------# ');
var e2subs = '^ ! ';
var expected = '--a--b--c--d-# ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should take all values when notifier is empty', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ !';
var e2 = hot('-------------| ');
var e2subs = '^ ! ';
var expected = '--a--b--c--d--e--f--g--|';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should take all values when notifier does not complete', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ !';
var e2 = hot('-');
var e2subs = '^ !';
var expected = '--a--b--c--d--e--f--g--|';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should allow unsubscribing explicitly and early', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ ! ';
var e2 = hot('-------------z--| ');
var e2subs = '^ ! ';
var unsub = ' ! ';
var expected = '--a--b-- ';
expectObservable(e1.takeUntil(e2), unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should complete when notifier emits if source observable does not complete', function () {
var e1 = hot('-');
var e1subs = '^ !';
var e2 = hot('--a--b--|');
var e2subs = '^ !';
var expected = '--|';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error when notifier raises error if source observable does not complete', function () {
var e1 = hot('-');
var e1subs = '^ !';
var e2 = hot('--#');
var e2subs = '^ !';
var expected = '--#';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete when notifier is empty if source observable does not complete', function () {
var e1 = hot('-');
var e1subs = '^';
var e2 = hot('--|');
var e2subs = '^ !';
var expected = '---';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete when source and notifier do not complete', function () {
var e1 = hot('-');
var e1subs = '^';
var e2 = hot('-');
var e2subs = '^';
var expected = '-';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should complete when notifier emits before source observable emits', function () {
var e1 = hot('----a--|');
var e1subs = '^ ! ';
var e2 = hot('--x ');
var e2subs = '^ ! ';
var expected = '--| ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error if source raises error before notifier emits', function () {
var e1 = hot('--a--b--c--d--# ');
var e1subs = '^ ! ';
var e2 = hot('----------------a--|');
var e2subs = '^ ! ';
var expected = '--a--b--c--d--# ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error immediately if source throws', function () {
var e1 = cold('#');
var e1subs = '(^!)';
var e2 = hot('--x');
var e2subs = '(^!)';
var expected = '#';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should dispose source observable if notifier emits before source emits', function () {
var e1 = hot('---a---|');
var e1subs = '^ ! ';
var e2 = hot('--x-| ');
var e2subs = '^ ! ';
var expected = '--| ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should dispose notifier if source observable completes', function () {
var e1 = hot('--a--| ');
var e1subs = '^ ! ';
var e2 = hot('-------x--|');
var e2subs = '^ ! ';
var expected = '--a--| ';
expectObservable(e1.takeUntil(e2)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not break unsubscription chain when unsubscribed explicitly', function () {
var e1 = hot('--a--b--c--d--e--f--g--|');
var e1subs = '^ ! ';
var e2 = hot('-------------z--| ');
var e2subs = '^ ! ';
var unsub = ' ! ';
var expected = '--a--b-- ';
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.takeUntil(e2)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
});
//# sourceMappingURL=takeUntil-spec.js.map</code></pre>
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