spec-js/operators/window-spec.js
"use strict";
var Rx = require('../../dist/package/Rx');
var Observable = Rx.Observable;
/** @test {window} */
describe('Observable.prototype.window', function () {
asDiagram('window')('should emit windows that close and reopen', function () {
var source = hot('---a---b---c---d---e---f---g---h---i---| ');
var sourceSubs = '^ ! ';
var closings = hot('-------------w------------w----------------|');
var closingSubs = '^ ! ';
var expected = 'x------------y------------z------------| ';
var x = cold('---a---b---c-| ');
var y = cold('--d---e---f--| ');
var z = cold('-g---h---i---| ');
var expectedValues = { x: x, y: y, z: z };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should return a single empty window if source is empty and closings are basic', function () {
var source = cold('|');
var sourceSubs = '(^!)';
var closings = cold('--x--x--|');
var closingSubs = '(^!)';
var expected = '(w|)';
var w = cold('|');
var expectedValues = { w: w };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should return a single empty window if source is empty and closing is empty', function () {
var source = cold('|');
var sourceSubs = '(^!)';
var closings = cold('|');
var closingSubs = '(^!)';
var expected = '(w|)';
var w = cold('|');
var expectedValues = { w: w };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should return a single empty window if source is sync empty and closing is sync empty', function () {
var source = cold('(|)');
var sourceSubs = '(^!)';
var expected = '(w|)';
var w = cold('|');
var expectedValues = { w: w };
var result = source.window(Observable.empty());
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
// expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should split a Just source into a single window identical to source, using a Never closing', function () {
var source = cold('(a|)');
var sourceSubs = '(^!)';
var closings = cold('-');
var closingSubs = '(^!)';
var expected = '(w|)';
var w = cold('(a|)');
var expectedValues = { w: w };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should return a single Never window if source is Never', function () {
var source = cold('------');
var sourceSubs = '^ ';
var closings = cold('------');
var closingSubs = '^ ';
var expected = 'w-----';
var w = cold('------');
var expectedValues = { w: w };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should be able to split a never Observable into timely empty windows', function () {
var source = hot('^--------');
var sourceSubs = '^ !';
var closings = cold('--x--x--|');
var closingSubs = '^ !';
var expected = 'a-b--c--|';
var a = cold('--| ');
var b = cold('---| ');
var c = cold('---|');
var expectedValues = { a: a, b: b, c: c };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should emit an error-only window if outer is a simple throw-Observable', function () {
var source = cold('#');
var sourceSubs = '(^!)';
var closings = cold('--x--x--|');
var closingSubs = '(^!)';
var expected = '(w#)';
var w = cold('#');
var expectedValues = { w: w };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(sourceSubs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should handle basic case with window closings', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-| ');
var subs = '^ ! ';
var closings = hot('---^---x---x---x---x---x---|');
var closingSubs = '^ ! ';
var expected = 'a---b---c---d--| ';
var a = cold('-3-4| ');
var b = cold('-5-6| ');
var c = cold('-7-8| ');
var d = cold('-9-| ');
var expectedValues = { a: a, b: b, c: c, d: d };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should handle basic case with window closings, but outer throws', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-# ');
var subs = '^ ! ';
var closings = hot('---^---x---x---x---x---x---|');
var closingSubs = '^ ! ';
var expected = 'a---b---c---d--# ';
var a = cold('-3-4| ');
var b = cold('-5-6| ');
var c = cold('-7-8| ');
var d = cold('-9-# ');
var expectedValues = { a: a, b: b, c: c, d: d };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should stop emitting windows when outer is unsubscribed early', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-| ');
var subs = '^ ! ';
var closings = hot('---^---x---x---x---x---x---|');
var closingSubs = '^ ! ';
var expected = 'a---b---- ';
var a = cold('-3-4| ');
var b = cold('-5-6 ');
var unsub = ' ! ';
var expectedValues = { a: a, b: b };
var result = source.window(closings);
expectObservable(result, unsub).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-| ');
var subs = '^ ! ';
var closings = hot('---^---x---x---x---x---x---|');
var closingSubs = '^ ! ';
var expected = 'a---b---- ';
var a = cold('-3-4| ');
var b = cold('-5-6- ');
var unsub = ' ! ';
var expectedValues = { a: a, b: b };
var result = source
.mergeMap(function (x) { return Observable.of(x); })
.window(closings)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should make outer emit error when closing throws', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-#');
var subs = '^ ! ';
var closings = hot('---^---# ');
var closingSubs = '^ ! ';
var expected = 'a---# ';
var a = cold('-3-4# ');
var expectedValues = { a: a };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
it('should complete the resulting Observable when window closings completes', function () {
var source = hot('-1-2-^3-4-5-6-7-8-9-|');
var subs = '^ ! ';
var closings = hot('---^---x---x---| ');
var closingSubs = '^ ! ';
var expected = 'a---b---c---| ';
var a = cold('-3-4| ');
var b = cold('-5-6| ');
var c = cold('-7-8| ');
var expectedValues = { a: a, b: b, c: c };
var result = source.window(closings);
expectObservable(result).toBe(expected, expectedValues);
expectSubscriptions(source.subscriptions).toBe(subs);
expectSubscriptions(closings.subscriptions).toBe(closingSubs);
});
});
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