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Edit File: Subscriber-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var Subscriber_1 = require("rxjs/internal/Subscriber");
var rxjs_1 = require("rxjs");
var interop_helper_1 = require("./helpers/interop-helper");
var subscription_1 = require("./helpers/subscription");
describe('SafeSubscriber', function () {
    it('should ignore next messages after unsubscription', function () {
        var times = 0;
        var sub = new Subscriber_1.SafeSubscriber({
            next: function () { times += 1; }
        });
        sub.next();
        sub.next();
        sub.unsubscribe();
        sub.next();
        (0, chai_1.expect)(times).to.equal(2);
    });
    it('should ignore error messages after unsubscription', function () {
        var times = 0;
        var errorCalled = false;
        var sub = new Subscriber_1.SafeSubscriber({
            next: function () { times += 1; },
            error: function () { errorCalled = true; }
        });
        sub.next();
        sub.next();
        sub.unsubscribe();
        sub.next();
        sub.error();
        (0, chai_1.expect)(times).to.equal(2);
        (0, chai_1.expect)(errorCalled).to.be.false;
    });
    it('should ignore complete messages after unsubscription', function () {
        var times = 0;
        var completeCalled = false;
        var sub = new Subscriber_1.SafeSubscriber({
            next: function () { times += 1; },
            complete: function () { completeCalled = true; }
        });
        sub.next();
        sub.next();
        sub.unsubscribe();
        sub.next();
        sub.complete();
        (0, chai_1.expect)(times).to.equal(2);
        (0, chai_1.expect)(completeCalled).to.be.false;
    });
    it('should not be closed when other subscriber with same observer instance completes', function () {
        var observer = {
            next: function () { }
        };
        var sub1 = new Subscriber_1.SafeSubscriber(observer);
        var sub2 = new Subscriber_1.SafeSubscriber(observer);
        sub2.complete();
        (0, chai_1.expect)(sub1.closed).to.be.false;
        (0, chai_1.expect)(sub2.closed).to.be.true;
    });
    it('should call complete observer without any arguments', function () {
        var argument = null;
        var observer = {
            complete: function () {
                var args = [];
                for (var _i = 0; _i < arguments.length; _i++) {
                    args[_i] = arguments[_i];
                }
                argument = args;
            }
        };
        var sub1 = new Subscriber_1.SafeSubscriber(observer);
        sub1.complete();
        (0, chai_1.expect)(argument).to.have.lengthOf(0);
    });
    it('should chain interop unsubscriptions', function () {
        var observableUnsubscribed = false;
        var subscriberUnsubscribed = false;
        var subscriptionUnsubscribed = false;
        var subscriber = new Subscriber_1.SafeSubscriber();
        subscriber.add(function () { return subscriberUnsubscribed = true; });
        var source = new rxjs_1.Observable(function () { return function () { return observableUnsubscribed = true; }; });
        var subscription = source.subscribe((0, interop_helper_1.asInteropSubscriber)(subscriber));
        subscription.add(function () { return subscriptionUnsubscribed = true; });
        subscriber.unsubscribe();
        (0, chai_1.expect)(observableUnsubscribed).to.be.true;
        (0, chai_1.expect)(subscriberUnsubscribed).to.be.true;
        (0, chai_1.expect)(subscriptionUnsubscribed).to.be.true;
    });
    it('should have idempotent unsubscription', function () {
        var count = 0;
        var subscriber = new Subscriber_1.SafeSubscriber();
        subscriber.add(function () { return ++count; });
        (0, chai_1.expect)(count).to.equal(0);
        subscriber.unsubscribe();
        (0, chai_1.expect)(count).to.equal(1);
        subscriber.unsubscribe();
        (0, chai_1.expect)(count).to.equal(1);
    });
    it('should close, unsubscribe, and unregister all finalizers after complete', function () {
        var isUnsubscribed = false;
        var subscriber = new Subscriber_1.SafeSubscriber();
        subscriber.add(function () { return isUnsubscribed = true; });
        subscriber.complete();
        (0, chai_1.expect)(isUnsubscribed).to.be.true;
        (0, chai_1.expect)(subscriber.closed).to.be.true;
        (0, chai_1.expect)((0, subscription_1.getRegisteredFinalizers)(subscriber).length).to.equal(0);
    });
    it('should close, unsubscribe, and unregister all finalizers after error', function () {
        var isTornDown = false;
        var subscriber = new Subscriber_1.SafeSubscriber({
            error: function () {
            }
        });
        subscriber.add(function () { return isTornDown = true; });
        subscriber.error(new Error('test'));
        (0, chai_1.expect)(isTornDown).to.be.true;
        (0, chai_1.expect)(subscriber.closed).to.be.true;
        (0, chai_1.expect)((0, subscription_1.getRegisteredFinalizers)(subscriber).length).to.equal(0);
    });
});
describe('Subscriber', function () {
    it('should finalize and unregister all finalizers after complete', function () {
        var isTornDown = false;
        var subscriber = new rxjs_1.Subscriber();
        subscriber.add(function () { isTornDown = true; });
        subscriber.complete();
        (0, chai_1.expect)(isTornDown).to.be.true;
        (0, chai_1.expect)((0, subscription_1.getRegisteredFinalizers)(subscriber).length).to.equal(0);
    });
    it('should NOT break this context on next methods from unfortunate consumers', function () {
        var CustomConsumer = (function () {
            function CustomConsumer() {
                this.valuesProcessed = [];
            }
            CustomConsumer.prototype.next = function (value) {
                if (value === 'reset') {
                    this.valuesProcessed = [];
                }
                else {
                    this.valuesProcessed.push(value);
                }
            };
            return CustomConsumer;
        }());
        ;
        var consumer = new CustomConsumer();
        (0, rxjs_1.of)('old', 'old', 'reset', 'new', 'new').subscribe(consumer);
        (0, chai_1.expect)(consumer.valuesProcessed).not.to.equal(['new', 'new']);
    });
    describe('deprecated next context mode', function () {
        beforeEach(function () {
            rxjs_1.config.useDeprecatedNextContext = true;
        });
        afterEach(function () {
            rxjs_1.config.useDeprecatedNextContext = false;
        });
        it('should allow changing the context of `this` in a POJO subscriber', function () {
            var results = [];
            var source = new rxjs_1.Observable(function (subscriber) {
                for (var i = 0; i < 10 && !subscriber.closed; i++) {
                    subscriber.next(i);
                }
                subscriber.complete();
                return function () {
                    results.push('finalizer');
                };
            });
            source.subscribe({
                next: function (value) {
                    (0, chai_1.expect)(this.unsubscribe).to.be.a('function');
                    results.push(value);
                    if (value === 3) {
                        this.unsubscribe();
                    }
                },
                complete: function () {
                    throw new Error('should not be called');
                }
            });
            (0, chai_1.expect)(results).to.deep.equal([0, 1, 2, 3, 'finalizer']);
        });
        it('should NOT break this context on next methods from unfortunate consumers', function () {
            var CustomConsumer = (function () {
                function CustomConsumer() {
                    this.valuesProcessed = [];
                }
                CustomConsumer.prototype.next = function (value) {
                    if (value === 'reset') {
                        this.valuesProcessed = [];
                    }
                    else {
                        this.valuesProcessed.push(value);
                    }
                };
                return CustomConsumer;
            }());
            ;
            var consumer = new CustomConsumer();
            (0, rxjs_1.of)('old', 'old', 'reset', 'new', 'new').subscribe(consumer);
            (0, chai_1.expect)(consumer.valuesProcessed).not.to.equal(['new', 'new']);
        });
    });
    var FinalizationRegistry = global.FinalizationRegistry;
    if (FinalizationRegistry && global.gc) {
        it('should not leak the destination', function (done) {
            var _a;
            var observer = {
                next: function () { },
                error: function () { },
                complete: function () { }
            };
            var registry = new FinalizationRegistry(function (value) {
                (0, chai_1.expect)(value).to.equal('observer');
                done();
            });
            registry.register(observer, 'observer');
            var subscription = (0, rxjs_1.of)(42).subscribe(observer);
            observer = undefined;
            (_a = global.gc) === null || _a === void 0 ? void 0 : _a.call(global);
        });
    }
    else {
        console.warn("No support for FinalizationRegistry in Node ".concat(process.version));
    }
});
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