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Edit File: mapTo-spec.js
"use strict"; Object.defineProperty(exports, "__esModule", { value: true }); var chai_1 = require("chai"); var operators_1 = require("rxjs/operators"); var testing_1 = require("rxjs/testing"); var rxjs_1 = require("rxjs"); var observableMatcher_1 = require("../helpers/observableMatcher"); describe('mapTo', function () { var testScheduler; beforeEach(function () { testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher); }); it('should map multiple values', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --1--2--3--|'); var e1subs = ' ^----------!'; var expected = '--a--a--a--|'; expectObservable(e1.pipe((0, operators_1.mapTo)('a'))).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should map one value', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --7--|'); var e1subs = ' ^----!'; var expected = '--y--|'; expectObservable(e1.pipe((0, operators_1.mapTo)('y'))).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should allow unsubscribing explicitly and early', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --1--2--3--|'); var e1subs = ' ^-----! '; var expected = '--x--x- '; var unsub = ' ------! '; expectObservable(e1.pipe((0, operators_1.mapTo)('x')), unsub).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should propagate errors from observable that emits only errors', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --#', undefined, 'too bad'); var e1subs = ' ^-!'; var expected = '--#'; expectObservable(e1.pipe((0, operators_1.mapTo)(1))).toBe(expected, null, 'too bad'); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should propagate errors from observable that emit values, then errors', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --1--2--#', undefined, 'too bad'); var e1subs = ' ^-------!'; var expected = '--x--x--#'; expectObservable(e1.pipe((0, operators_1.mapTo)('x'))).toBe(expected, undefined, 'too bad'); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should not map an empty observable', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' | '); var e1subs = ' (^!)'; var expected = '| '; expectObservable(e1.pipe((0, operators_1.mapTo)(-1))).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should map twice', function () { testScheduler.run(function (_a) { var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = hot('-0----1-^-2---3--4-5--6--7-8-|'); var e1subs = ' ^--------------------!'; var expected = ' --h---h--h-h--h--h-h-|'; var result = e1.pipe((0, operators_1.mapTo)(-1), (0, operators_1.mapTo)('h')); expectObservable(result).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should not break unsubscription chain when unsubscribed explicitly', function () { testScheduler.run(function (_a) { var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions; var e1 = cold(' --1--2--3--|'); var e1subs = ' ^-----! '; var expected = '--x--x- '; var unsub = ' ------! '; var result = e1.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.mapTo)('x'), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); })); expectObservable(result, unsub).toBe(expected); expectSubscriptions(e1.subscriptions).toBe(e1subs); }); }); it('should stop listening to a synchronous observable when unsubscribed', function () { var sideEffects = []; var synchronousObservable = new rxjs_1.Observable(function (subscriber) { for (var i = 0; !subscriber.closed && i < 10; i++) { sideEffects.push(i); subscriber.next(i); } }); synchronousObservable.pipe((0, operators_1.mapTo)(0), (0, operators_1.take)(3)).subscribe(function () { }); (0, chai_1.expect)(sideEffects).to.deep.equal([0, 1, 2]); }); }); //# sourceMappingURL=mapTo-spec.js.map