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spec-js/operators/mergeMap-spec.js

"use strict";
var chai_1 = require('chai');
var Rx = require('../../dist/package/Rx');
var Observable = Rx.Observable;
/** @test {mergeMap} */
describe('Observable.prototype.mergeMap', function () {
    asDiagram('mergeMap(i => 10*i\u2014\u201410*i\u2014\u201410*i\u2014| )')('should map-and-flatten each item to an Observable', function () {
        var e1 = hot('--1-----3--5-------|');
        var e1subs = '^                  !';
        var e2 = cold('x-x-x|              ', { x: 10 });
        var expected = '--x-x-x-y-yzyz-z---|';
        var values = { x: 10, y: 30, z: 50 };
        var result = e1.mergeMap(function (x) { return e2.map(function (i) { return i * x; }); });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many regular interval inners', function () {
        var a = cold('----a---a---a---(a|)                    ');
        var b = cold('----b---b---(b|)                    ');
        var c = cold('----c---c---c---c---(c|)');
        var d = cold('----(d|)        ');
        var e1 = hot('a---b-----------c-------d-------|       ');
        var e1subs = '^                                   !   ';
        var expected = '----a---(ab)(ab)(ab)c---c---(cd)c---(c|)';
        var observableLookup = { a: a, b: b, c: c, d: d };
        var source = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should map values to constant resolved promises and merge', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var project = function (value) { return Observable.from(Promise.resolve(42)); };
        var results = [];
        source.mergeMap(project).subscribe(function (x) {
            results.push(x);
        }, function (err) {
            done(new Error('Subscriber error handler not supposed to be called.'));
        }, function () {
            chai_1.expect(results).to.deep.equal([42, 42, 42, 42]);
            done();
        });
    });
    it('should map values to constant rejected promises and merge', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var project = function (value) {
            return Observable.from(Promise.reject(42));
        };
        source.mergeMap(project).subscribe(function (x) {
            done(new Error('Subscriber next handler not supposed to be called.'));
        }, function (err) {
            chai_1.expect(err).to.equal(42);
            done();
        }, function () {
            done(new Error('Subscriber complete handler not supposed to be called.'));
        });
    });
    it('should map values to resolved promises and merge', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var project = function (value, index) {
            return Observable.from(Promise.resolve(value + index));
        };
        var results = [];
        source.mergeMap(project).subscribe(function (x) {
            results.push(x);
        }, function (err) {
            done(new Error('Subscriber error handler not supposed to be called.'));
        }, function () {
            chai_1.expect(results).to.deep.equal([4, 4, 4, 4]);
            done();
        });
    });
    it('should map values to rejected promises and merge', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var project = function (value, index) {
            return Observable.from(Promise.reject('' + value + '-' + index));
        };
        source.mergeMap(project).subscribe(function (x) {
            done(new Error('Subscriber next handler not supposed to be called.'));
        }, function (err) {
            chai_1.expect(err).to.equal('4-0');
            done();
        }, function () {
            done(new Error('Subscriber complete handler not supposed to be called.'));
        });
    });
    it('should mergeMap values to resolved promises with resultSelector', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var resultSelectorCalledWith = [];
        var project = function (value, index) {
            return Observable.from(Promise.resolve([value, index]));
        };
        var resultSelector = function (outerVal, innerVal, outerIndex, innerIndex) {
            resultSelectorCalledWith.push([].slice.call(arguments));
            return 8;
        };
        var results = [];
        var expectedCalls = [
            [4, [4, 0], 0, 0],
            [3, [3, 1], 1, 0],
            [2, [2, 2], 2, 0],
            [1, [1, 3], 3, 0],
        ];
        source.mergeMap(project, resultSelector).subscribe(function (x) {
            results.push(x);
        }, function (err) {
            done(new Error('Subscriber error handler not supposed to be called.'));
        }, function () {
            chai_1.expect(results).to.deep.equal([8, 8, 8, 8]);
            chai_1.expect(resultSelectorCalledWith).to.deep.equal(expectedCalls);
            done();
        });
    });
    it('should mergeMap values to rejected promises with resultSelector', function (done) {
        var source = Rx.Observable.from([4, 3, 2, 1]);
        var project = function (value, index) {
            return Observable.from(Promise.reject('' + value + '-' + index));
        };
        var resultSelector = function () {
            throw 'this should not be called';
        };
        source.mergeMap(project, resultSelector).subscribe(function (x) {
            done(new Error('Subscriber next handler not supposed to be called.'));
        }, function (err) {
            chai_1.expect(err).to.equal('4-0');
            done();
        }, function () {
            done(new Error('Subscriber complete handler not supposed to be called.'));
        });
    });
    it('should mergeMap many outer values to many inner values', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------|            ');
        var e1subs = '^                                            !';
        var inner = cold('----i---j---k---l---|                        ', values);
        var innersubs = [' ^                   !                        ',
            '         ^                   !                ',
            '                 ^                   !        ',
            '                         ^                   !'];
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l---|';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(inner.subscriptions).toBe(innersubs);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, complete late', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-----------------------|');
        var e1subs = '^                                                !';
        var inner = cold('----i---j---k---l---|                            ', values);
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l-------|';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, outer never completes', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------e---------------f------');
        var unsub = '                                                       !';
        var e1subs = '^                                                      !';
        var inner = cold('----i---j---k---l---|                                  ', values);
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)(ki)(lj)k---l---i--';
        var source = e1.mergeMap(function (value) { return inner; });
        expectObservable(source, unsub).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should not break unsubscription chains when result is unsubscribed explicitly', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------e---------------f------');
        var e1subs = '^                                                      !';
        var inner = cold('----i---j---k---l---|                                  ', values);
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)(ki)(lj)k---l---i--';
        var unsub = '                                                       !';
        var source = e1
            .map(function (x) { return x; })
            .mergeMap(function (value) { return inner; })
            .map(function (x) { return x; });
        expectObservable(source, unsub).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, inner never completes', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------|         ');
        var e1subs = '^                                          ';
        var inner = cold('----i---j---k---l-------------------------', values);
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)(lj)k---l-';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, and inner throws', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------|');
        var e1subs = '^                        !        ';
        var inner = cold('----i---j---k---l-------#        ', values);
        var expected = '-----i---j---(ki)(lj)(ki)#        ';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, and outer throws', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------#');
        var e1subs = '^                                !';
        var inner = cold('----i---j---k---l---|            ', values);
        var expected = '-----i---j---(ki)(lj)(ki)(lj)(ki)#';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to many inner, both inner and outer throw', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c-------d-------#');
        var e1subs = '^                    !            ';
        var inner = cold('----i---j---k---l---#            ', values);
        var expected = '-----i---j---(ki)(lj)#            ';
        var result = e1.mergeMap(function (value) { return inner; });
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap to many cold Observable, with parameter concurrency=1', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                                        ');
        var e1subs = '^                                                            !';
        var inner = cold('----i---j---k---l---|                                        ', values);
        var innersubs = [' ^                   !                                        ',
            '                     ^                   !                    ',
            '                                         ^                   !'];
        var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
        function project() { return inner; }
        function resultSelector(oV, iV, oI, iI) { return iV; }
        var result = e1.mergeMap(project, resultSelector, 1);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(inner.subscriptions).toBe(innersubs);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap to many cold Observable, with parameter concurrency=2', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                    ');
        var e1subs = '^                                        !';
        var inner = cold('----i---j---k---l---|                    ', values);
        var innersubs = [' ^                   !                    ',
            '         ^                   !            ',
            '                     ^                   !'];
        var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
        function project() { return inner; }
        function resultSelector(oV, iV, oI, iI) { return iV; }
        var result = e1.mergeMap(project, resultSelector, 2);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(inner.subscriptions).toBe(innersubs);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap to many hot Observable, with parameter concurrency=1', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                                        ');
        var e1subs = '^                                                            !';
        var hotA = hot('x----i---j---k---l---|                                        ', values);
        var hotB = hot('-x-x-xxxx-x-x-xxxxx-x----i---j---k---l---|                    ', values);
        var hotC = hot('x-xxxx---x-x-x-x-x-xx--x--x-x--x--xxxx-x-----i---j---k---l---|', values);
        var asubs = ' ^                   !                                        ';
        var bsubs = '                     ^                   !                    ';
        var csubs = '                                         ^                   !';
        var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
        var inners = { a: hotA, b: hotB, c: hotC };
        function project(x) { return inners[x]; }
        function resultSelector(oV, iV, oI, iI) { return iV; }
        var result = e1.mergeMap(project, resultSelector, 1);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
        expectSubscriptions(hotA.subscriptions).toBe(asubs);
        expectSubscriptions(hotB.subscriptions).toBe(bsubs);
        expectSubscriptions(hotC.subscriptions).toBe(csubs);
    });
    it('should mergeMap to many hot Observable, with parameter concurrency=2', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                    ');
        var e1subs = '^                                        !';
        var hotA = hot('x----i---j---k---l---|                    ', values);
        var hotB = hot('-x-x-xxxx----i---j---k---l---|            ', values);
        var hotC = hot('x-xxxx---x-x-x-x-x-xx----i---j---k---l---|', values);
        var asubs = ' ^                   !                    ';
        var bsubs = '         ^                   !            ';
        var csubs = '                     ^                   !';
        var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
        var inners = { a: hotA, b: hotB, c: hotC };
        function project(x) { return inners[x]; }
        function resultSelector(oV, iV, oI, iI) { return iV; }
        var result = e1.mergeMap(project, resultSelector, 2);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
        expectSubscriptions(hotA.subscriptions).toBe(asubs);
        expectSubscriptions(hotB.subscriptions).toBe(bsubs);
        expectSubscriptions(hotC.subscriptions).toBe(csubs);
    });
    it('should mergeMap to many cold Observable, with parameter concurrency=1, without resultSelector', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                                        ');
        var e1subs = '^                                                            !';
        var inner = cold('----i---j---k---l---|                                        ', values);
        var innersubs = [' ^                   !                                        ',
            '                     ^                   !                    ',
            '                                         ^                   !'];
        var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
        function project() { return inner; }
        var result = e1.mergeMap(project, 1);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(inner.subscriptions).toBe(innersubs);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap to many cold Observable, with parameter concurrency=2, without resultSelector', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                    ');
        var e1subs = '^                                        !';
        var inner = cold('----i---j---k---l---|                    ', values);
        var innersubs = [' ^                   !                    ',
            '         ^                   !            ',
            '                     ^                   !'];
        var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
        function project() { return inner; }
        var result = e1.mergeMap(project, 2);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(inner.subscriptions).toBe(innersubs);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap to many hot Observable, with parameter concurrency=1, without resultSelector', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                                        ');
        var e1subs = '^                                                            !';
        var hotA = hot('x----i---j---k---l---|                                        ', values);
        var hotB = hot('-x-x-xxxx-x-x-xxxxx-x----i---j---k---l---|                    ', values);
        var hotC = hot('x-xxxx---x-x-x-x-x-xx--x--x-x--x--xxxx-x-----i---j---k---l---|', values);
        var asubs = ' ^                   !                                        ';
        var bsubs = '                     ^                   !                    ';
        var csubs = '                                         ^                   !';
        var expected = '-----i---j---k---l-------i---j---k---l-------i---j---k---l---|';
        var inners = { a: hotA, b: hotB, c: hotC };
        function project(x) { return inners[x]; }
        var result = e1.mergeMap(project, 1);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
        expectSubscriptions(hotA.subscriptions).toBe(asubs);
        expectSubscriptions(hotB.subscriptions).toBe(bsubs);
        expectSubscriptions(hotC.subscriptions).toBe(csubs);
    });
    it('should mergeMap to many hot Observable, with parameter concurrency=2, without resultSelector', function () {
        var values = { i: 'foo', j: 'bar', k: 'baz', l: 'qux' };
        var e1 = hot('-a-------b-------c---|                    ');
        var e1subs = '^                                        !';
        var hotA = hot('x----i---j---k---l---|                    ', values);
        var hotB = hot('-x-x-xxxx----i---j---k---l---|            ', values);
        var hotC = hot('x-xxxx---x-x-x-x-x-xx----i---j---k---l---|', values);
        var asubs = ' ^                   !                    ';
        var bsubs = '         ^                   !            ';
        var csubs = '                     ^                   !';
        var expected = '-----i---j---(ki)(lj)k---(li)j---k---l---|';
        var inners = { a: hotA, b: hotB, c: hotC };
        function project(x) { return inners[x]; }
        var result = e1.mergeMap(project, 2);
        expectObservable(result).toBe(expected, values);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
        expectSubscriptions(hotA.subscriptions).toBe(asubs);
        expectSubscriptions(hotB.subscriptions).toBe(bsubs);
        expectSubscriptions(hotC.subscriptions).toBe(csubs);
    });
    it('should mergeMap many complex, where all inners are finite', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g|');
        var e1subs = '^                                             !';
        var expected = '---2--3--4--5---1--2--3--2--3--6--4--5---1-2--|';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var result = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, all inners finite except one', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3-');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g|');
        var e1subs = '^                                               ';
        var expected = '---2--3--4--5---1--2--3--2--3--6--4--5---1-2----';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var result = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, inners finite, outer does not complete', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g--------');
        var e1subs = '^                                               ';
        var expected = '---2--3--4--5---1--2--3--2--3--6--4--5---1-2----';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var result = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, all inners finite, and outer throws', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g#       ');
        var e1subs = '^                                      !       ';
        var expected = '---2--3--4--5---1--2--3--2--3--6--4--5-#       ';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var result = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, all inners complete except one throws', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-#');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g|');
        var e1subs = '^                                !             ';
        var expected = '---2--3--4--5---1--2--3--2--3--6-#             ';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var result = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(result).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, all inners finite, outer is unsubscribed', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g|');
        var unsub = '                              !                ';
        var e1subs = '^                             !                ';
        var expected = '---2--3--4--5---1--2--3--2--3--                ';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var source = e1.mergeMap(function (value) { return observableLookup[value]; });
        expectObservable(source, unsub).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many complex, all inners finite, project throws', function () {
        var a = cold('-#');
        var b = cold('-#');
        var c = cold('-2--3--4--5------------------6-|');
        var d = cold('-----------2--3|');
        var e = cold('-1--------2--3-----4--5--------|');
        var f = cold('--|');
        var g = cold('---1-2|');
        var e1 = hot('-a-b--^-c-----d------e----------------f-----g|');
        var e1subs = '^              !                               ';
        var expected = '---2--3--4--5--#                               ';
        var observableLookup = { a: a, b: b, c: c, d: d, e: e, f: f, g: g };
        var invoked = 0;
        var source = e1.mergeMap(function (value) {
            invoked++;
            if (invoked === 3) {
                throw 'error';
            }
            return observableLookup[value];
        });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    function arrayRepeat(value, times) {
        var results = [];
        for (var i = 0; i < times; i++) {
            results.push(value);
        }
        return results;
    }
    it('should mergeMap many outer to an array for each value', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var e1subs = '^                               !';
        var expected = '(22)--(4444)---(333)----(22)----|';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, using resultSelector', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var e1subs = '^                               !';
        var expected = '(44)--(8888)---(666)----(44)----|';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); }, function (x, y) { return String(parseInt(x) + parseInt(y)); });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, and outer throws', function () {
        var e1 = hot('2-----4--------3--------2-------#');
        var e1subs = '^                               !';
        var expected = '(22)--(4444)---(333)----(22)----#';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, resultSelector, outer throws', function () {
        var e1 = hot('2-----4--------3--------2-------#');
        var e1subs = '^                               !';
        var expected = '(44)--(8888)---(666)----(44)----#';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); }, function (x, y) { return String(parseInt(x) + parseInt(y)); });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, outer gets unsubscribed', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var unsub = '             !                   ';
        var e1subs = '^            !                   ';
        var expected = '(22)--(4444)--                   ';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); });
        expectObservable(source, unsub).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, resultSelector, outer unsubscribed', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var unsub = '             !                   ';
        var e1subs = '^            !                   ';
        var expected = '(44)--(8888)--                   ';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); }, function (x, y) { return String(parseInt(x) + parseInt(y)); });
        expectObservable(source, unsub).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, project throws', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var e1subs = '^              !                 ';
        var expected = '(22)--(4444)---#                 ';
        var invoked = 0;
        var source = e1.mergeMap(function (value) {
            invoked++;
            if (invoked === 3) {
                throw 'error';
            }
            return arrayRepeat(value, value);
        });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, resultSelector throws', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var e1subs = '^              !                 ';
        var expected = '(44)--(8888)---#                 ';
        var source = e1.mergeMap(function (value) { return arrayRepeat(value, value); }, function (inner, outer) {
            if (outer === '3') {
                throw 'error';
            }
            return String(parseInt(outer) + parseInt(inner));
        });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should mergeMap many outer to inner arrays, resultSelector, project throws', function () {
        var e1 = hot('2-----4--------3--------2-------|');
        var e1subs = '^              !                 ';
        var expected = '(44)--(8888)---#                 ';
        var invoked = 0;
        var source = e1.mergeMap(function (value) {
            invoked++;
            if (invoked === 3) {
                throw 'error';
            }
            return arrayRepeat(value, value);
        }, function (inner, outer) {
            return String(parseInt(outer) + parseInt(inner));
        });
        expectObservable(source).toBe(expected);
        expectSubscriptions(e1.subscriptions).toBe(e1subs);
    });
    it('should map and flatten', function () {
        var source = Observable.of(1, 2, 3, 4).mergeMap(function (x) { return Observable.of(x + '!'); });
        var expected = ['1!', '2!', '3!', '4!'];
        var completed = false;
        source.subscribe(function (x) {
            chai_1.expect(x).to.equal(expected.shift());
        }, null, function () {
            chai_1.expect(expected.length).to.equal(0);
            completed = true;
        });
        chai_1.expect(completed).to.be.true;
    });
    it('should map and flatten an Array', function () {
        var source = Observable.of(1, 2, 3, 4).mergeMap(function (x) { return [x + '!']; });
        var expected = ['1!', '2!', '3!', '4!'];
        var completed = false;
        source.subscribe(function (x) {
            chai_1.expect(x).to.equal(expected.shift());
        }, null, function () {
            chai_1.expect(expected.length).to.equal(0);
            completed = true;
        });
        chai_1.expect(completed).to.be.true;
    });
    it('should support type signatures', function () {
        type(function () {
            var o;
            /* tslint:disable:no-unused-variable */
            var a1 = o.mergeMap(function (x) { return x.toString(); });
            var a2 = o.mergeMap(function (x) { return x.toString(); }, 3);
            var a3 = o.mergeMap(function (x) { return x.toString(); }, function (o, i) { return ({ o: o, i: i }); });
            var a4 = o.mergeMap(function (x) { return x.toString(); }, function (o, i) { return ({ o: o, i: i }); }, 3);
            /* tslint:enable:no-unused-variable */
        });
    });
});
//# sourceMappingURL=mergeMap-spec.js.map