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Edit File: delay-spec.js

"use strict";
var __read = (this && this.__read) || function (o, n) {
    var m = typeof Symbol === "function" && o[Symbol.iterator];
    if (!m) return o;
    var i = m.call(o), r, ar = [], e;
    try {
        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
    }
    catch (error) { e = { error: error }; }
    finally {
        try {
            if (r && !r.done && (m = i["return"])) m.call(i);
        }
        finally { if (e) throw e.error; }
    }
    return ar;
};
Object.defineProperty(exports, "__esModule", { value: true });
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var testing_1 = require("rxjs/testing");
var sinon = require("sinon");
var chai_1 = require("chai");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('delay', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should delay by specified timeframe', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a--b--|');
            var e1subs = '  ^--------!';
            var t = time('     --|    ');
            var expected = '-----a--b|';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not delay at all if the delay number is negative', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a--b--|');
            var e1subs = '  ^--------!';
            var t = -1;
            var expected = '---a--b--|';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should delay by absolute time period', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--a---a----a----a------------b---b---b---b--|');
            var e1subs = '  ^----------------------------------------------!';
            var t = time('  --------------------|                           ');
            var expected = '--------------------(aaaaa)-----b---b---b---b--|';
            var absoluteDelay = new Date(testScheduler.now() + t);
            var result = e1.pipe((0, operators_1.delay)(absoluteDelay));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not delay at all if the absolute time is in the past', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--a---a----a----a------------b---b---b---b--|');
            var e1subs = '  ^----------------------------------------------!';
            var t = -10000;
            var expected = '--a--a---a----a----a------------b---b---b---b--|';
            var absoluteDelay = new Date(testScheduler.now() + t);
            var result = e1.pipe((0, operators_1.delay)(absoluteDelay));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should delay by absolute time period after source ends', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('---^--a-----a---a-----a---|             ');
            var e1subs = '   ^----------------------!             ';
            var t = time('   ------------------------------|      ');
            var expected = ' ------------------------------(aaaa|)';
            var absoluteDelay = new Date(testScheduler.now() + t);
            var result = e1.pipe((0, operators_1.delay)(absoluteDelay));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error when source raises error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a---b---#');
            var e1subs = '  ^----------!';
            var t = time('     ---|     ');
            var expected = '------a---b#';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error when source raises error before absolute delay fires', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--a---a-----#     ');
            var e1subs = '  ^--------------!     ';
            var t = time('  --------------------|');
            var expected = '---------------#     ';
            var absoluteDelay = new Date(testScheduler.now() + t);
            var result = e1.pipe((0, operators_1.delay)(absoluteDelay));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error when source raises error after absolute delay fires', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('---^---a--a---a---a--------b---b---b--#');
            var e1subs = '   ^----------------------------------!';
            var t = time('   -----------------|                  ');
            var expected = ' -----------------(aaaa)-b---b---b--#';
            var absoluteDelay = new Date(testScheduler.now() + t);
            var result = e1.pipe((0, operators_1.delay)(absoluteDelay));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should delay when source does not emit', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ----|');
            var e1subs = '  ^---!';
            var t = time('  ---| ');
            var expected = '----|';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not delay when source is empty', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' |   ');
            var e1subs = '  (^!)';
            var t = time('  ---|');
            var expected = '|   ';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should delay complete when a value is scheduled', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' -a-|    ');
            var e1subs = '  ^--!    ';
            var t = time('   ---|   ');
            var expected = '----(a|)';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete when source does not complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a---b---------');
            var e1subs = '  ^---------------!';
            var t = time('     ---|          ');
            var expected = '------a---b------';
            var unsub = '   ----------------!';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result, unsub).toBe(expected);
            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, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a---b----');
            var e1subs = '  ^-------!   ';
            var t = time('     ---|     ');
            var expected = '------a--   ';
            var unsub = '   --------!   ';
            var result = e1.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.delay)(t), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete when source never completes', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' -   ');
            var e1subs = '  ^   ';
            var t = time('  ---|');
            var expected = '-   ';
            var result = e1.pipe((0, operators_1.delay)(t));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should unsubscribe scheduled actions after execution', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var subscribeSpy = null;
            var counts = [];
            var e1 = cold(' a|      ');
            var t = time('  -|      ');
            var expected = '--a-(a|)';
            var result = e1.pipe((0, operators_1.repeatWhen)(function (notifications) {
                var delayed = notifications.pipe((0, operators_1.delay)(t));
                subscribeSpy = sinon.spy(delayed['source'], 'subscribe');
                return delayed;
            }), (0, operators_1.skip)(1), (0, operators_1.take)(2), (0, operators_1.tap)({
                next: function () {
                    var _a = __read(subscribeSpy.args, 1), _b = __read(_a[0], 1), subscriber = _b[0];
                    counts.push(subscriber._finalizers.length);
                },
                complete: function () {
                    (0, chai_1.expect)(counts).to.deep.equal([1, 1]);
                },
            }));
            expectObservable(result).toBe(expected);
        });
    });
    it('should be possible to delay complete by composition', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, time = _a.time, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ---a--b---|  ');
            var e1subs = '  ^---------!  ';
            var t = time('     --|       ');
            var expected = '-----a--b---|';
            var result = (0, rxjs_1.concat)(e1.pipe((0, operators_1.delay)(t)), (0, rxjs_1.of)(undefined).pipe((0, operators_1.delay)(t), (0, operators_1.ignoreElements)()));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
});
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