@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
87 lines • 3.52 kB
JavaScript
;
var chai_1 = require('chai');
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {refCount} */
describe('ConnectableObservable.prototype.refCount', function () {
asDiagram('refCount')('should turn a multicasted Observable an automatically ' +
'(dis)connecting hot one', function () {
var source = cold('--1-2---3-4--5-|');
var sourceSubs = '^ !';
var expected = '--1-2---3-4--5-|';
var result = source.publish().refCount();
expectObservable(result).toBe(expected);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
});
it('should count references', function () {
var connectable = Observable.never().publish();
var refCounted = connectable.refCount();
var sub1 = refCounted.subscribe({ next: function () {
} });
var sub2 = refCounted.subscribe({ next: function () {
} });
var sub3 = refCounted.subscribe({ next: function () {
} });
chai_1.expect(connectable._refCount).to.equal(3);
sub1.unsubscribe();
sub2.unsubscribe();
sub3.unsubscribe();
});
it('should unsub from the source when all other subscriptions are unsubbed', function (done) {
var unsubscribeCalled = false;
var connectable = new Observable(function (observer) {
observer.next(true);
return function () {
unsubscribeCalled = true;
};
}).publish();
var refCounted = connectable.refCount();
var sub1 = refCounted.subscribe(function () {
//noop
});
var sub2 = refCounted.subscribe(function () {
//noop
});
var sub3 = refCounted.subscribe(function (x) {
chai_1.expect(connectable._refCount).to.equal(1);
});
sub1.unsubscribe();
sub2.unsubscribe();
sub3.unsubscribe();
chai_1.expect(connectable._refCount).to.equal(0);
chai_1.expect(unsubscribeCalled).to.be.true;
done();
});
it('should not unsubscribe when a subscriber synchronously unsubscribes if ' +
'other subscribers are present', function () {
var unsubscribeCalled = false;
var connectable = new Observable(function (observer) {
observer.next(true);
return function () {
unsubscribeCalled = true;
};
}).publishReplay(1);
var refCounted = connectable.refCount();
refCounted.subscribe();
refCounted.subscribe().unsubscribe();
chai_1.expect(connectable._refCount).to.equal(1);
chai_1.expect(unsubscribeCalled).to.be.false;
});
it('should not unsubscribe when a subscriber synchronously unsubscribes if ' +
'other subscribers are present and the source is a Subject', function () {
var arr = [];
var subject = new Rx.Subject();
var connectable = subject.publishReplay(1);
var refCounted = connectable.refCount();
refCounted.subscribe(function (val) {
arr.push(val);
});
subject.next('the number one');
refCounted.first().subscribe().unsubscribe();
subject.next('the number two');
chai_1.expect(connectable._refCount).to.equal(1);
chai_1.expect(arr[0]).to.equal('the number one');
chai_1.expect(arr[1]).to.equal('the number two');
});
});
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