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Edit File: switchMapTo-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var testing_1 = require("rxjs/testing");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('switchMapTo', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should map-and-flatten each item to an Observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --1-----3--5-------|');
            var e1subs = '  ^------------------!';
            var e2 = cold('   x-x-x|            ', { x: 10 });
            var expected = '--x-x-x-x-xx-x-x---|';
            var values = { x: 10 };
            var result = e1.pipe((0, operators_1.switchMapTo)(e2));
            expectObservable(result).toBe(expected, values);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should support the deprecated resultSelector', function () {
        var results = [];
        (0, rxjs_1.of)(1, 2, 3)
            .pipe((0, operators_1.switchMapTo)((0, rxjs_1.of)(4, 5, 6), function (a, b, i, ii) { return [a, b, i, ii]; }))
            .subscribe({
            next: function (value) {
                results.push(value);
            },
            error: function (err) {
                throw err;
            },
            complete: function () {
                (0, chai_1.expect)(results).to.deep.equal([
                    [1, 4, 0, 0],
                    [1, 5, 0, 1],
                    [1, 6, 0, 2],
                    [2, 4, 1, 0],
                    [2, 5, 1, 1],
                    [2, 6, 1, 2],
                    [3, 4, 2, 0],
                    [3, 5, 2, 1],
                    [3, 6, 2, 2],
                ]);
            },
        });
    });
    it('should support a void resultSelector (still deprecated)', function () {
        var results = [];
        (0, rxjs_1.of)(1, 2, 3)
            .pipe((0, operators_1.switchMapTo)((0, rxjs_1.of)(4, 5, 6), void 0))
            .subscribe({
            next: function (value) {
                results.push(value);
            },
            error: function (err) {
                throw err;
            },
            complete: function () {
                (0, chai_1.expect)(results).to.deep.equal([4, 5, 6, 4, 5, 6, 4, 5, 6]);
            },
        });
    });
    it('should switch a synchronous many outer to a synchronous many inner', function (done) {
        var a = (0, rxjs_1.of)(1, 2, 3);
        var expected = ['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c'];
        a.pipe((0, operators_1.switchMapTo)((0, rxjs_1.of)('a', 'b', 'c'))).subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expected.shift());
            },
            complete: done,
        });
    });
    it('should unsub inner observables', function () {
        var unsubbed = 0;
        (0, rxjs_1.of)('a', 'b')
            .pipe((0, operators_1.switchMapTo)(new rxjs_1.Observable(function (subscriber) {
            subscriber.complete();
            return function () {
                unsubbed++;
            };
        })))
            .subscribe();
        (0, chai_1.expect)(unsubbed).to.equal(2);
    });
    it('should switch to an inner cold observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--c--d--e--|          ');
            var xsubs = [
                '               ---------^---------!                 ',
                '               -------------------^----------------!',
            ];
            var e1 = hot('  ---------x---------x---------|       ');
            var e1subs = '  ^----------------------------!       ';
            var expected = '-----------a--b--c---a--b--c--d--e--|';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner cold observable, outer eventually throws', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--c--d--e--|');
            var xsubs = '   ---------^---------!       ';
            var e1 = hot('  ---------x---------#       ');
            var e1subs = '  ^------------------!       ';
            var expected = '-----------a--b--c-#       ';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner cold observable, outer is unsubscribed early', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--c--d--e--|   ');
            var xsubs = [
                '               ---------^---------!          ',
                '               -------------------^--!       ',
            ];
            var e1 = hot('  ---------x---------x---------|');
            var unsub = '   ----------------------!       ';
            var e1subs = '  ^---------------------!       ';
            var expected = '-----------a--b--c---a-       ';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x)), unsub).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('--a--b--c--d--e--|   ');
            var xsubs = [
                '               ---------^---------!          ',
                '               -------------------^--!       ',
            ];
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^---------------------!       ';
            var expected = '-----------a--b--c---a-       ';
            var unsub = '   ----------------------!       ';
            var result = e1.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.switchMapTo)(x), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner cold observable, inner never completes', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--c--d--e-          ');
            var xsubs = [
                '               ---------^---------!               ',
                '               -------------------^               ',
            ];
            var e1 = hot('  ---------x---------y---------|     ');
            var e1subs = '  ^----------------------------!     ';
            var expected = '-----------a--b--c---a--b--c--d--e-';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle a synchronous switch to the inner observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--c--d--e--|   ');
            var xsubs = [
                '               ---------(^!)                 ',
                '               ---------^----------------!   '
            ];
            var e1 = hot('  ---------(xx)----------------|');
            var e1subs = '  ^----------------------------!';
            var expected = '-----------a--b--c--d--e-----|';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner cold observable, inner raises an error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           --a--b--#            ');
            var xsubs = '   ---------^-------!            ';
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^----------------!            ';
            var expected = '-----------a--b--#            ';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch an inner hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = hot('   --p-o-o-p---a--b--c--d-|      ');
            var xsubs = [
                '               ---------^---------!          ',
                '               -------------------^---!      '
            ];
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^----------------------------!';
            var expected = '------------a--b--c--d-------|';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner empty', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           |                    ');
            var xsubs = [
                '               ---------(^!)                 ',
                '               -------------------(^!)       ',
            ];
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^----------------------------!';
            var expected = '-----------------------------|';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner never', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           -                    ');
            var xsubs = [
                '               ---------^---------!          ',
                '               -------------------^          ',
            ];
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^----------------------------!';
            var expected = '------------------------------';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should switch to an inner that just raises an error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var x = cold('           #                    ');
            var xsubs = '   ---------(^!)                 ';
            var e1 = hot('  ---------x---------x---------|');
            var e1subs = '  ^--------!                    ';
            var expected = '---------#                    ';
            expectObservable(e1.pipe((0, operators_1.switchMapTo)(x))).toBe(expected);
            expectSubscriptions(x.subscriptions).toBe(xsubs);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an empty outer', 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.switchMapTo)((0, rxjs_1.of)('foo')))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle a never outer', 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.switchMapTo)((0, rxjs_1.of)('foo')))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an outer that just raises and error', 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.switchMapTo)((0, rxjs_1.of)('foo')))).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.switchMapTo)((0, rxjs_1.of)(0)), (0, operators_1.take)(3)).subscribe(function () {
        });
        (0, chai_1.expect)(sideEffects).to.deep.equal([0, 1, 2]);
    });
});
//# sourceMappingURL=switchMapTo-spec.js.map

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