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Edit File: ReplaySubject-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('ReplaySubject', function () {
    var rxTestScheduler;
    beforeEach(function () {
        rxTestScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should extend Subject', function () {
        var subject = new rxjs_1.ReplaySubject();
        (0, chai_1.expect)(subject).to.be.instanceof(rxjs_1.Subject);
    });
    it('should add the observer before running subscription code', function () {
        var subject = new rxjs_1.ReplaySubject();
        subject.next(1);
        var results = [];
        subject.subscribe(function (value) {
            results.push(value);
            if (value < 3) {
                subject.next(value + 1);
            }
        });
        (0, chai_1.expect)(results).to.deep.equal([1, 2, 3]);
    });
    it('should replay values upon subscription', function (done) {
        var subject = new rxjs_1.ReplaySubject();
        var expects = [1, 2, 3];
        var i = 0;
        subject.next(1);
        subject.next(2);
        subject.next(3);
        subject.subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expects[i++]);
                if (i === 3) {
                    subject.complete();
                }
            },
            error: function (err) {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    it('should replay values and complete', function (done) {
        var subject = new rxjs_1.ReplaySubject();
        var expects = [1, 2, 3];
        var i = 0;
        subject.next(1);
        subject.next(2);
        subject.next(3);
        subject.complete();
        subject.subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expects[i++]);
            },
            complete: done,
        });
    });
    it('should replay values and error', function (done) {
        var subject = new rxjs_1.ReplaySubject();
        var expects = [1, 2, 3];
        var i = 0;
        subject.next(1);
        subject.next(2);
        subject.next(3);
        subject.error('fooey');
        subject.subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expects[i++]);
            },
            error: function (err) {
                (0, chai_1.expect)(err).to.equal('fooey');
                done();
            },
        });
    });
    it('should only replay values within its buffer size', function (done) {
        var subject = new rxjs_1.ReplaySubject(2);
        var expects = [2, 3];
        var i = 0;
        subject.next(1);
        subject.next(2);
        subject.next(3);
        subject.subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expects[i++]);
                if (i === 2) {
                    subject.complete();
                }
            },
            error: function (err) {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    describe('with bufferSize=2', function () {
        it('should replay 2 previous values when subscribed', function () {
            rxTestScheduler.run(function (_a) {
                var hot = _a.hot, expectObservable = _a.expectObservable;
                var replaySubject = new rxjs_1.ReplaySubject(2);
                function feedNextIntoSubject(x) {
                    replaySubject.next(x);
                }
                function feedErrorIntoSubject(err) {
                    replaySubject.error(err);
                }
                function feedCompleteIntoSubject() {
                    replaySubject.complete();
                }
                var sourceTemplate = ' -1-2-3----4------5-6---7--8----9--|';
                var subscriber1 = hot('------(a|)                         ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var unsub1 = '         ---------------------!             ';
                var expected1 = '      ------(23)4------5-6--             ';
                var subscriber2 = hot('------------(b|)                   ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var unsub2 = '         -------------------------!         ';
                var expected2 = '      ------------(34)-5-6---7--         ';
                var subscriber3 = hot('---------------------------(c|)    ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var expected3 = '      ---------------------------(78)9--|';
                expectObservable(hot(sourceTemplate).pipe((0, operators_1.tap)({ next: feedNextIntoSubject, error: feedErrorIntoSubject, complete: feedCompleteIntoSubject }))).toBe(sourceTemplate);
                expectObservable(subscriber1, unsub1).toBe(expected1);
                expectObservable(subscriber2, unsub2).toBe(expected2);
                expectObservable(subscriber3).toBe(expected3);
            });
        });
        it('should replay 2 last values for when subscribed after completed', function () {
            rxTestScheduler.run(function (_a) {
                var hot = _a.hot, expectObservable = _a.expectObservable;
                var replaySubject = new rxjs_1.ReplaySubject(2);
                function feedNextIntoSubject(x) {
                    replaySubject.next(x);
                }
                function feedErrorIntoSubject(err) {
                    replaySubject.error(err);
                }
                function feedCompleteIntoSubject() {
                    replaySubject.complete();
                }
                var sourceTemplate = ' -1-2-3--4--|';
                var subscriber1 = hot('---------------(a|) ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var expected1 = '      ---------------(34|)';
                expectObservable(hot(sourceTemplate).pipe((0, operators_1.tap)({ next: feedNextIntoSubject, error: feedErrorIntoSubject, complete: feedCompleteIntoSubject }))).toBe(sourceTemplate);
                expectObservable(subscriber1).toBe(expected1);
            });
        });
        it('should handle subscribers that arrive and leave at different times, ' + 'subject does not complete', function () {
            var subject = new rxjs_1.ReplaySubject(2);
            var results1 = [];
            var results2 = [];
            var results3 = [];
            subject.next(1);
            subject.next(2);
            subject.next(3);
            subject.next(4);
            var subscription1 = subject.subscribe({
                next: function (x) {
                    results1.push(x);
                },
                error: function (err) {
                    results1.push('E');
                },
                complete: function () {
                    results1.push('C');
                },
            });
            subject.next(5);
            var subscription2 = subject.subscribe({
                next: function (x) {
                    results2.push(x);
                },
                error: function (err) {
                    results2.push('E');
                },
                complete: function () {
                    results2.push('C');
                },
            });
            subject.next(6);
            subject.next(7);
            subscription1.unsubscribe();
            subject.next(8);
            subscription2.unsubscribe();
            subject.next(9);
            subject.next(10);
            var subscription3 = subject.subscribe({
                next: function (x) {
                    results3.push(x);
                },
                error: function (err) {
                    results3.push('E');
                },
                complete: function () {
                    results3.push('C');
                },
            });
            subject.next(11);
            subscription3.unsubscribe();
            (0, chai_1.expect)(results1).to.deep.equal([3, 4, 5, 6, 7]);
            (0, chai_1.expect)(results2).to.deep.equal([4, 5, 6, 7, 8]);
            (0, chai_1.expect)(results3).to.deep.equal([9, 10, 11]);
            subject.complete();
        });
    });
    describe('with windowTime=4', function () {
        it('should replay previous values since 4 time units ago when subscribed', function () {
            rxTestScheduler.run(function (_a) {
                var hot = _a.hot, expectObservable = _a.expectObservable;
                var replaySubject = new rxjs_1.ReplaySubject(Infinity, 4, rxTestScheduler);
                function feedNextIntoSubject(x) {
                    replaySubject.next(x);
                }
                function feedErrorIntoSubject(err) {
                    replaySubject.error(err);
                }
                function feedCompleteIntoSubject() {
                    replaySubject.complete();
                }
                var sourceTemplate = ' -1-2-3----4------5-6----7-8----9--|';
                var subscriber1 = hot('------(a|)                         ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var unsub1 = '         ---------------------!             ';
                var expected1 = '      ------(23)4------5-6--             ';
                var subscriber2 = hot('------------(b|)                   ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var unsub2 = '         -------------------------!         ';
                var expected2 = '      ------------4----5-6----7-         ';
                var subscriber3 = hot('---------------------------(c|)    ').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var expected3 = '      ---------------------------(78)9--|';
                expectObservable(hot(sourceTemplate).pipe((0, operators_1.tap)({ next: feedNextIntoSubject, error: feedErrorIntoSubject, complete: feedCompleteIntoSubject }))).toBe(sourceTemplate);
                expectObservable(subscriber1, unsub1).toBe(expected1);
                expectObservable(subscriber2, unsub2).toBe(expected2);
                expectObservable(subscriber3).toBe(expected3);
            });
        });
        it('should replay last values since 4 time units ago when subscribed', function () {
            rxTestScheduler.run(function (_a) {
                var hot = _a.hot, expectObservable = _a.expectObservable;
                var replaySubject = new rxjs_1.ReplaySubject(Infinity, 4, rxTestScheduler);
                function feedNextIntoSubject(x) {
                    replaySubject.next(x);
                }
                function feedErrorIntoSubject(err) {
                    replaySubject.error(err);
                }
                function feedCompleteIntoSubject() {
                    replaySubject.complete();
                }
                var sourceTemplate = ' -1-2-3----4|';
                var subscriber1 = hot('-------------(a|)').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var expected1 = '      -------------(4|)';
                expectObservable(hot(sourceTemplate).pipe((0, operators_1.tap)({ next: feedNextIntoSubject, error: feedErrorIntoSubject, complete: feedCompleteIntoSubject }))).toBe(sourceTemplate);
                expectObservable(subscriber1).toBe(expected1);
            });
        });
        it('should only replay bufferSize items when 4 time units ago more were emitted', function () {
            rxTestScheduler.run(function (_a) {
                var hot = _a.hot, expectObservable = _a.expectObservable;
                var replaySubject = new rxjs_1.ReplaySubject(2, 4, rxTestScheduler);
                function feedNextIntoSubject(x) {
                    replaySubject.next(x);
                }
                function feedErrorIntoSubject(err) {
                    replaySubject.error(err);
                }
                function feedCompleteIntoSubject() {
                    replaySubject.complete();
                }
                var sourceTemplate = ' 1234-------|';
                var subscriber1 = hot('----(a|)').pipe((0, operators_1.mergeMapTo)(replaySubject));
                var expected1 = '      ----(34)---|';
                expectObservable(hot(sourceTemplate).pipe((0, operators_1.tap)({ next: feedNextIntoSubject, error: feedErrorIntoSubject, complete: feedCompleteIntoSubject }))).toBe(sourceTemplate);
                expectObservable(subscriber1).toBe(expected1);
            });
        });
    });
    it('should be an Observer which can be given to Observable.subscribe', function () {
        var source = (0, rxjs_1.of)(1, 2, 3, 4, 5);
        var subject = new rxjs_1.ReplaySubject(3);
        var results = [];
        subject.subscribe({ next: function (x) { return results.push(x); }, complete: function () { return results.push('done'); } });
        source.subscribe(subject);
        (0, chai_1.expect)(results).to.deep.equal([1, 2, 3, 4, 5, 'done']);
        results = [];
        subject.subscribe({ next: function (x) { return results.push(x); }, complete: function () { return results.push('done'); } });
        (0, chai_1.expect)(results).to.deep.equal([3, 4, 5, 'done']);
    });
    it('should not buffer nexted values after complete', function () {
        var results = [];
        var subject = new rxjs_1.ReplaySubject();
        subject.next(1);
        subject.next(2);
        subject.complete();
        subject.next(3);
        subject.subscribe({
            next: function (value) { return results.push(value); },
            complete: function () { return results.push('C'); },
        });
        (0, chai_1.expect)(results).to.deep.equal([1, 2, 'C']);
    });
    it('should not buffer nexted values after error', function () {
        var results = [];
        var subject = new rxjs_1.ReplaySubject();
        subject.next(1);
        subject.next(2);
        subject.error(new Error('Boom!'));
        subject.next(3);
        subject.subscribe({
            next: function (value) { return results.push(value); },
            error: function () { return results.push('E'); },
        });
        (0, chai_1.expect)(results).to.deep.equal([1, 2, 'E']);
    });
});
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