@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
98 lines • 3.75 kB
JavaScript
;
var chai_1 = require('chai');
var sinon = require('sinon');
var Rx = require('../../dist/cjs/Rx');
var RangeObservable_1 = require('../../dist/cjs/observable/RangeObservable');
var Observable = Rx.Observable;
var asap = Rx.Scheduler.asap;
/** @test {range} */
describe('Observable.range', function () {
asDiagram('range(1, 10)')('should create an observable with numbers 1 to 10', function () {
var e1 = Observable.range(1, 10)
.concatMap(function (x, i) { return Observable.of(x).delay(i === 0 ? 0 : 20, rxTestScheduler); });
var expected = 'a-b-c-d-e-f-g-h-i-(j|)';
var values = {
a: 1,
b: 2,
c: 3,
d: 4,
e: 5,
f: 6,
g: 7,
h: 8,
i: 9,
j: 10,
};
expectObservable(e1).toBe(expected, values);
});
it('should synchronously create a range of values by default', function () {
var results = [];
Observable.range(12, 4).subscribe(function (x) {
results.push(x);
});
chai_1.expect(results).to.deep.equal([12, 13, 14, 15]);
});
it('should accept a scheduler', function (done) {
var expected = [12, 13, 14, 15];
sinon.spy(asap, 'schedule');
var source = Observable.range(12, 4, asap);
chai_1.expect(source.scheduler).to.deep.equal(asap);
source.subscribe(function (x) {
chai_1.expect(asap.schedule).have.been.called;
var exp = expected.shift();
chai_1.expect(x).to.equal(exp);
}, function (x) {
done(new Error('should not be called'));
}, function () {
asap.schedule.restore();
done();
});
});
});
describe('RangeObservable', function () {
describe('create', function () {
it('should create a RangeObservable', function () {
var observable = RangeObservable_1.RangeObservable.create(12, 4);
chai_1.expect(observable instanceof RangeObservable_1.RangeObservable).to.be.true;
});
it('should accept a scheduler', function () {
var observable = RangeObservable_1.RangeObservable.create(12, 4, asap);
chai_1.expect(observable.scheduler).to.deep.equal(asap);
});
});
describe('dispatch', function () {
it('should complete if index >= count', function () {
var o = new Rx.Subscriber();
var obj = sinon.stub(o);
var state = {
subscriber: obj,
index: 10,
start: 0,
count: 9
};
RangeObservable_1.RangeObservable.dispatch(state);
chai_1.expect(state.subscriber.complete).have.been.called;
chai_1.expect(state.subscriber.next).not.have.been.called;
});
it('should next out another value and increment the index and start', function () {
var o = new Rx.Subscriber();
var obj = sinon.stub(o);
var state = {
subscriber: obj,
index: 1,
start: 5,
count: 9
};
var thisArg = {
schedule: sinon.spy()
};
RangeObservable_1.RangeObservable.dispatch.call(thisArg, state);
chai_1.expect(state.subscriber.complete).not.have.been.called;
chai_1.expect(state.subscriber.next).have.been.calledWith(5);
chai_1.expect(state.start).to.equal(6);
chai_1.expect(state.index).to.equal(2);
chai_1.expect(thisArg.schedule).have.been.calledWith(state);
});
});
});
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