spec-js/operators/buffer-spec.js
"use strict";
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {buffer} */
describe('Observable.prototype.buffer', function () {
asDiagram('buffer')('should emit buffers that close and reopen', function () {
var a = hot('-a-b-c-d-e-f-g-h-i-|');
var b = hot('-----B-----B-----B-|');
var expected = '-----x-----y-----z-|';
var expectedValues = {
x: ['a', 'b', 'c'],
y: ['d', 'e', 'f'],
z: ['g', 'h', 'i']
};
expectObservable(a.buffer(b)).toBe(expected, expectedValues);
});
it('should work with empty and empty selector', function () {
var a = Observable.empty();
var b = Observable.empty();
var expected = '|';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with empty and non-empty selector', function () {
var a = Observable.empty();
var b = hot('-----a-----');
var expected = '|';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with non-empty and empty selector', function () {
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var b = Observable.empty();
var expected = '|';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with never and never selector', function () {
var a = Observable.never();
var b = Observable.never();
var expected = '-';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with never and empty selector', function () {
var a = Observable.never();
var b = Observable.empty();
var expected = '|';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with empty and never selector', function () {
var a = Observable.empty();
var b = Observable.never();
var expected = '|';
expectObservable(a.buffer(b)).toBe(expected);
});
it('should work with non-empty and throw selector', function () {
var a = hot('---^--a--');
var b = Observable.throw(new Error('too bad'));
var expected = '#';
expectObservable(a.buffer(b)).toBe(expected, null, new Error('too bad'));
});
it('should work with throw and non-empty selector', function () {
var a = Observable.throw(new Error('too bad'));
var b = hot('---^--a--');
var expected = '#';
expectObservable(a.buffer(b)).toBe(expected, null, new Error('too bad'));
});
it('should work with error', function () {
var a = hot('---^-------#', null, new Error('too bad'));
var b = hot('---^--------');
var expected = '--------#';
expectObservable(a.buffer(b)).toBe(expected, null, new Error('too bad'));
});
it('should work with error and non-empty selector', function () {
var a = hot('---^-------#', null, new Error('too bad'));
var b = hot('---^---a----');
var expected = '----a---#';
expectObservable(a.buffer(b)).toBe(expected, { a: [] }, new Error('too bad'));
});
it('should work with selector', function () {
// Buffer Boundaries Simple (RxJS 4)
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var b = hot('--------^--a-------b---cd---------e---f---|');
var expected = '---a-------b---cd---------e---f-|';
var expectedValues = {
a: ['3'],
b: ['4', '5'],
c: ['6'],
d: [],
e: ['7', '8', '9'],
f: ['0']
};
expectObservable(a.buffer(b)).toBe(expected, expectedValues);
});
it('should work with selector completed', function () {
// Buffer Boundaries onCompletedBoundaries (RxJS 4)
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var subs = '^ ! ';
var b = hot('--------^--a-------b---cd| ');
var expected = '---a-------b---cd| ';
var expectedValues = {
a: ['3'],
b: ['4', '5'],
c: ['6'],
d: []
};
expectObservable(a.buffer(b)).toBe(expected, expectedValues);
expectSubscriptions(a.subscriptions).toBe(subs);
});
it('should allow unsubscribing the result Observable early', function () {
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var unsub = ' ! ';
var subs = '^ ! ';
var b = hot('--------^--a-------b---cd| ');
var expected = '---a-------b--- ';
var expectedValues = {
a: ['3'],
b: ['4', '5']
};
expectObservable(a.buffer(b), unsub).toBe(expected, expectedValues);
expectSubscriptions(a.subscriptions).toBe(subs);
});
it('should not break unsubscription chains when unsubscribed explicitly', function () {
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var subs = '^ ! ';
var b = hot('--------^--a-------b---cd| ');
var expected = '---a-------b--- ';
var unsub = ' ! ';
var expectedValues = {
a: ['3'],
b: ['4', '5']
};
var result = a
.mergeMap(function (x) { return Observable.of(x); })
.buffer(b)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected, expectedValues);
expectSubscriptions(a.subscriptions).toBe(subs);
});
it('should work with non-empty and selector error', function () {
// Buffer Boundaries onErrorSource (RxJS 4)
var a = hot('--1--2--^--3-----#', { '3': 3 }, new Error('too bad'));
var subs = '^ !';
var b = hot('--------^--a--b---');
var expected = '---a--b--#';
var expectedValues = {
a: [3],
b: []
};
expectObservable(a.buffer(b)).toBe(expected, expectedValues, new Error('too bad'));
expectSubscriptions(a.subscriptions).toBe(subs);
});
it('should work with non-empty and empty selector error', function () {
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var b = hot('--------^----------------#', null, new Error('too bad'));
var expected = '-----------------#';
expectObservable(a.buffer(b)).toBe(expected, null, new Error('too bad'));
});
it('should work with non-empty and selector error', function () {
// Buffer Boundaries onErrorBoundaries (RxJS 4)
var obj = { a: true, b: true, c: true };
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var subs = '^ !';
var b = hot('--------^--a-------b---c-#', obj, new Error('too bad'));
var expected = '---a-------b---c-#';
var expectedValues = {
a: ['3'],
b: ['4', '5'],
c: ['6']
};
expectObservable(a.buffer(b)).toBe(expected, expectedValues, new Error('too bad'));
expectSubscriptions(a.subscriptions).toBe(subs);
});
it('should unsubscribe notifier when source unsubscribed', function () {
var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
var unsub = ' ! ';
var subs = '^ ! ';
var b = hot('--------^--a-------b---cd| ');
var bsubs = '^ ! ';
var expected = '---a-------b--- ';
var expectedValues = {
a: ['3'],
b: ['4', '5']
};
expectObservable(a.buffer(b), unsub).toBe(expected, expectedValues);
expectSubscriptions(a.subscriptions).toBe(subs);
expectSubscriptions(b.subscriptions).toBe(bsubs);
});
it('should unsubscribe notifier when source unsubscribed', function () {
var a = hot('-a-b-c-d-e-f-g-h-i-|');
var b = hot('-----1-----2-----3-|');
var bsubs = '^ !';
var expected = '-----(x|)';
var expectedValues = {
x: ['a', 'b', 'c'],
};
expectObservable(a.buffer(b).take(1)).toBe(expected, expectedValues);
expectSubscriptions(b.subscriptions).toBe(bsubs);
});
});
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