spec-js/operators/concatAll-spec.js
"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {concatAll} */
describe('Observable.prototype.concatAll', function () {
asDiagram('concatAll')('should concat an observable of observables', function () {
var x = cold('----a------b------| ');
var y = cold('---c-d---| ');
var z = cold('---e--f-|');
var outer = hot('-x---y----z------| ', { x: x, y: y, z: z });
var expected = '-----a------b---------c-d------e--f-|';
var result = outer.concatAll();
expectObservable(result).toBe(expected);
});
it('should concat sources from promise', function (done) {
this.timeout(2000);
var sources = Rx.Observable.from([
new Promise(function (res) { res(0); }),
new Promise(function (res) { res(1); }),
new Promise(function (res) { res(2); }),
new Promise(function (res) { res(3); }),
]).take(10);
var res = [];
sources.concatAll().subscribe(function (x) { res.push(x); }, function (err) { done(new Error('should not be called')); }, function () {
chai_1.expect(res).to.deep.equal([0, 1, 2, 3]);
done();
});
});
it('should concat and raise error from promise', function (done) {
this.timeout(2000);
var sources = Rx.Observable.from([
new Promise(function (res) { res(0); }),
new Promise(function (res, rej) { rej(1); }),
new Promise(function (res) { res(2); }),
new Promise(function (res) { res(3); }),
]).take(10);
var res = [];
sources.concatAll().subscribe(function (x) { res.push(x); }, function (err) {
chai_1.expect(res.length).to.equal(1);
chai_1.expect(err).to.equal(1);
done();
}, function () { done(new Error('should not be called')); });
});
it('should concat all observables in an observable', function () {
var e1 = Rx.Observable.from([
Rx.Observable.of('a'),
Rx.Observable.of('b'),
Rx.Observable.of('c')
]).take(10);
var expected = '(abc|)';
expectObservable(e1.concatAll()).toBe(expected);
});
it('should throw if any child observable throws', function () {
var e1 = Rx.Observable.from([
Rx.Observable.of('a'),
Rx.Observable.throw('error'),
Rx.Observable.of('c')
]).take(10);
var expected = '(a#)';
expectObservable(e1.concatAll()).toBe(expected);
});
it('should concat merging a hot observable of non-overlapped observables', function () {
var values = {
x: cold('a-b---------|'),
y: cold('c-d-e-f-|'),
z: cold('g-h-i-j-k-|')
};
var e1 = hot('--x---------y--------z--------|', values);
var expected = '--a-b---------c-d-e-f-g-h-i-j-k-|';
expectObservable(e1.concatAll()).toBe(expected);
});
it('should raise error if inner observable raises error', function () {
var values = {
x: cold('a-b---------|'),
y: cold('c-d-e-f-#'),
z: cold('g-h-i-j-k-|')
};
var e1 = hot('--x---------y--------z--------|', values);
var expected = '--a-b---------c-d-e-f-#';
expectObservable(e1.concatAll()).toBe(expected);
});
it('should raise error if outer observable raises error', function () {
var values = {
y: cold('a-b---------|'),
z: cold('c-d-e-f-|'),
};
var e1 = hot('--y---------z---# ', values);
var expected = '--a-b---------c-#';
expectObservable(e1.concatAll()).toBe(expected);
});
it('should complete without emit if both sources are empty', function () {
var e1 = cold('--|');
var e1subs = '^ !';
var e2 = cold('----|');
var e2subs = ' ^ !';
var expected = '------|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete if first source does not completes', function () {
var e1 = cold('-');
var e1subs = '^';
var e2 = cold('--|');
var e2subs = [];
var expected = '-';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete if second source does not completes', function () {
var e1 = cold('--|');
var e1subs = '^ !';
var e2 = cold('---');
var e2subs = ' ^';
var expected = '---';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete if both sources do not complete', function () {
var e1 = cold('-');
var e1subs = '^';
var e2 = cold('-');
var e2subs = [];
var expected = '-';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error when first source is empty, second source raises error', function () {
var e1 = cold('--|');
var e1subs = '^ !';
var e2 = cold('----#');
var e2subs = ' ^ !';
var expected = '------#';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error when first source raises error, second source is empty', function () {
var e1 = cold('---#');
var e1subs = '^ !';
var e2 = cold('----|');
var e2subs = [];
var expected = '---#';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise first error when both source raise error', function () {
var e1 = cold('---#');
var e1subs = '^ !';
var e2 = cold('------#');
var e2subs = [];
var expected = '---#';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should concat if first source emits once, second source is empty', function () {
var e1 = cold('--a--|');
var e1subs = '^ !';
var e2 = cold('--------|');
var e2subs = ' ^ !';
var expected = '--a----------|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should concat if first source is empty, second source emits once', function () {
var e1 = cold('--|');
var e1subs = '^ !';
var e2 = cold('--a--|');
var e2subs = ' ^ !';
var expected = '----a--|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should emit element from first source, and should not complete if second ' +
'source does not completes', function () {
var e1 = cold('--a--|');
var e1subs = '^ !';
var e2 = cold('-');
var e2subs = ' ^';
var expected = '--a---';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not complete if first source does not complete', function () {
var e1 = cold('-');
var e1subs = '^';
var e2 = cold('--a--|');
var e2subs = [];
var expected = '-';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should emit elements from each source when source emit once', function () {
var e1 = cold('---a|');
var e1subs = '^ !';
var e2 = cold('-----b--|');
var e2subs = ' ^ !';
var expected = '---a-----b--|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should unsubscribe to inner source if outer is unsubscribed early', function () {
var e1 = cold('---a-a--a| ');
var e1subs = '^ ! ';
var e2 = cold('-----b-b--b-|');
var e2subs = ' ^ ! ';
var unsub = ' ! ';
var expected = '---a-a--a-----b-b ';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var e1 = cold('---a-a--a| ');
var e1subs = '^ ! ';
var e2 = cold('-----b-b--b-|');
var e2subs = ' ^ ! ';
var expected = '---a-a--a-----b-b- ';
var unsub = ' ! ';
var result = Observable.of(e1, e2)
.mergeMap(function (x) { return Observable.of(x); })
.concatAll()
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should raise error from first source and does not emit from second source', function () {
var e1 = cold('--#');
var e1subs = '^ !';
var e2 = cold('----a--|');
var e2subs = [];
var expected = '--#';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should emit element from first source then raise error from second source', function () {
var e1 = cold('--a--|');
var e1subs = '^ !';
var e2 = cold('-------#');
var e2subs = ' ^ !';
var expected = '--a---------#';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should emit all elements from both hot observable sources if first source ' +
'completes before second source starts emit', function () {
var e1 = hot('--a--b-|');
var e1subs = '^ !';
var e2 = hot('--------x--y--|');
var e2subs = ' ^ !';
var expected = '--a--b--x--y--|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should emit elements from second source regardless of completion time ' +
'when second source is cold observable', function () {
var e1 = hot('--a--b--c---|');
var e1subs = '^ !';
var e2 = cold('-x-y-z-|');
var e2subs = ' ^ !';
var expected = '--a--b--c----x-y-z-|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should not emit collapsing element from second source', function () {
var e1 = hot('--a--b--c--|');
var e1subs = '^ !';
var e2 = hot('--------x--y--z--|');
var e2subs = ' ^ !';
var expected = '--a--b--c--y--z--|';
var result = Observable.of(e1, e2).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
});
it('should be able to work on a different scheduler', function () {
var e1 = cold('---a|');
var e1subs = '^ !';
var e2 = cold('---b--|');
var e2subs = ' ^ !';
var e3 = cold('---c--|');
var e3subs = ' ^ !';
var expected = '---a---b-----c--|';
var result = Observable.of(e1, e2, e3, rxTestScheduler).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
expectSubscriptions(e2.subscriptions).toBe(e2subs);
expectSubscriptions(e3.subscriptions).toBe(e3subs);
});
it('should concatAll a nested observable with a single inner observable', function () {
var e1 = cold('---a-|');
var e1subs = '^ !';
var expected = '---a-|';
var result = Observable.of(e1).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should concatAll a nested observable with a single inner observable, and a scheduler', function () {
var e1 = cold('---a-|');
var e1subs = '^ !';
var expected = '---a-|';
var result = Observable.of(e1, rxTestScheduler).concatAll();
expectObservable(result).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
});
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