@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
116 lines • 5.07 kB
JavaScript
"use strict";
var Rx = require('../../dist/cjs/Rx');
var Observable = Rx.Observable;
/** @test {timestamp} */
describe('Observable.prototype.timestamp', function () {
asDiagram('timestamp')('should record the time stamp per each source elements', function () {
var e1 = hot('-b-c-----d--e--|');
var e1subs = '^ !';
var expected = '-w-x-----y--z--|';
var expectedValue = { w: 10, x: 30, y: 90, z: 120 };
var result = e1.timestamp(rxTestScheduler)
.map(function (x) { return x.timestamp; });
expectObservable(result).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should record stamp if source emit elements', function () {
var e1 = hot('--a--^b--c----d---e--|');
var e1subs = '^ !';
var expected = '-w--x----y---z--|';
var expectedValue = {
w: new Rx.Timestamp('b', 10),
x: new Rx.Timestamp('c', 40),
y: new Rx.Timestamp('d', 90),
z: new Rx.Timestamp('e', 130)
};
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should completes without record stamp if source does not emits', function () {
var e1 = hot('---------|');
var e1subs = '^ !';
var expected = '---------|';
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should complete immediately if source is empty', function () {
var e1 = cold('|');
var e1subs = '(^!)';
var expected = '|';
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should record stamp then does not completes if source emits but not completes', function () {
var e1 = hot('-a--b--');
var e1subs = '^ ';
var expected = '-y--z--';
var expectedValue = {
y: new Rx.Timestamp('a', 10),
z: new Rx.Timestamp('b', 40)
};
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should allow unsubscribing explicitly and early', function () {
var e1 = hot('-a--b-----c---d---|');
var unsub = ' ! ';
var e1subs = '^ ! ';
var expected = '-y--z--- ';
var expectedValue = {
y: new Rx.Timestamp('a', 10),
z: new Rx.Timestamp('b', 40)
};
var result = e1.timestamp(rxTestScheduler);
expectObservable(result, unsub).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
var e1 = hot('-a--b-----c---d---|');
var e1subs = '^ ! ';
var expected = '-y--z--- ';
var unsub = ' ! ';
var expectedValue = {
y: new Rx.Timestamp('a', 10),
z: new Rx.Timestamp('b', 40)
};
var result = e1
.mergeMap(function (x) { return Observable.of(x); })
.timestamp(rxTestScheduler)
.mergeMap(function (x) { return Observable.of(x); });
expectObservable(result, unsub).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should not completes if source never completes', function () {
var e1 = cold('-');
var e1subs = '^';
var expected = '-';
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('raise error if source raises error', function () {
var e1 = hot('---#');
var e1subs = '^ !';
var expected = '---#';
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should record stamp then raise error if source raises error after emit', function () {
var e1 = hot('-a--b--#');
var e1subs = '^ !';
var expected = '-y--z--#';
var expectedValue = {
y: new Rx.Timestamp('a', 10),
z: new Rx.Timestamp('b', 40)
};
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected, expectedValue);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
it('should raise error if source immediately throws', function () {
var e1 = cold('#');
var e1subs = '(^!)';
var expected = '#';
expectObservable(e1.timestamp(rxTestScheduler)).toBe(expected);
expectSubscriptions(e1.subscriptions).toBe(e1subs);
});
});
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