@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
144 lines • 6.29 kB
JavaScript
;
/** @test {cache} */
describe('Observable.prototype.cache', function () {
it('should replay values upon subscription', function () {
var s1 = hot('---^---a---b---c---| ').cache();
var expected1 = '----a---b---c---| ';
var expected2 = ' (abc|)';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should replay values and error', function () {
var s1 = hot('---^---a---b---c---# ').cache();
var expected1 = '----a---b---c---# ';
var expected2 = ' (abc#)';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should replay values and and share', function () {
var s1 = hot('---^---a---b---c------------d--e--f-|').cache();
var expected1 = '----a---b---c------------d--e--f-|';
var expected2 = ' (abc)----d--e--f-|';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should have a bufferCount that limits the replay test 1', function () {
var s1 = hot('---^---a---b---c------------d--e--f-|').cache(1);
var expected1 = '----a---b---c------------d--e--f-|';
var expected2 = ' c--------d--e--f-|';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should have a bufferCount that limits the replay test 2', function () {
var s1 = hot('---^---a---b---c------------d--e--f-|').cache(2);
var expected1 = '----a---b---c------------d--e--f-|';
var expected2 = ' (bc)-----d--e--f-|';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should accept a windowTime that limits the replay', function () {
var w = time('----------|');
var s1 = hot('---^---a---b---c------------d--e--f-|').cache(Number.POSITIVE_INFINITY, w, rxTestScheduler);
var expected1 = '----a---b---c------------d--e--f-|';
var expected2 = ' (bc)-----d--e--f-|';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should handle empty', function () {
var s1 = cold('|').cache();
var expected1 = '|';
var expected2 = ' |';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should handle throw', function () {
var s1 = cold('#').cache();
var expected1 = '#';
var expected2 = ' #';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should handle never', function () {
var s1 = cold('-').cache();
var expected1 = '-';
var expected2 = ' -';
var t = time('----------------|');
expectObservable(s1).toBe(expected1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected2);
}, t);
});
it('should multicast a completion', function () {
var s1 = hot('--a--^--b------c-----d------e-|').cache();
var t1 = time('| ');
var e1 = '---b------c-----d------e-|';
var t2 = time('----------| ');
var e2 = ' (bc)--d------e-|';
var t3 = time('----------------| ');
var e3 = ' (bcd)--e-|';
var expected = [e1, e2, e3];
[t1, t2, t3].forEach(function (t, i) {
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected[i]);
}, t);
});
});
it('should multicast an error', function () {
var s1 = hot('--a--^--b------c-----d------e-#').cache();
var t1 = time('| ');
var e1 = '---b------c-----d------e-#';
var t2 = time('----------| ');
var e2 = ' (bc)--d------e-#';
var t3 = time('----------------| ');
var e3 = ' (bcd)--e-#';
var expected = [e1, e2, e3];
[t1, t2, t3].forEach(function (t, i) {
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(expected[i]);
}, t);
});
});
it('should limit replay by both count and a window time, test 2', function () {
var w = time('-----------|');
var s1 = hot('--a--^---b---c----d----e------f--g--h--i-------|').cache(4, w, rxTestScheduler);
var e1 = '----b---c----d----e------f--g--h--i-------|';
var t1 = time('--------------------|');
// -----------|
var e2 = ' (de)-f--g--h--i-------|'; // time wins
var t2 = time('-----------------------------------|');
var e3 = ' (fghi)-|'; // count wins
// -----------|
expectObservable(s1).toBe(e1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(e2);
}, t1);
rxTestScheduler.schedule(function () {
expectObservable(s1).toBe(e3);
}, t2);
});
});
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