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Edit File: retryWhen-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var operators_1 = require("rxjs/operators");
var rxjs_1 = require("rxjs");
var testing_1 = require("rxjs/testing");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('retryWhen', function () {
    var rxTest;
    beforeEach(function () {
        rxTest = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should handle a source with eventual error using a hot notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold(' -1--2--#                     ');
            var subs = [
                '                   ^------!                     ',
                '                   -------------^------!        ',
                '                   --------------------------^-!',
            ];
            var notifier = hot('-------------r------------r-|');
            var expected = '    -1--2---------1--2---------1|';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should handle a source with eventual error using a hot notifier that raises error', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold(' -1--2--#                      ');
            var subs = [
                '                   ^------!                      ',
                '                   -----------^------!           ',
                '                   -------------------^------!   ',
            ];
            var notifier = hot('-----------r-------r---------#');
            var expected = '    -1--2-------1--2----1--2-----#';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should retry when notified via returned notifier on thrown error', function (done) {
        var retried = false;
        var expected = [1, 2, 1, 2];
        var i = 0;
        (0, rxjs_1.of)(1, 2, 3)
            .pipe((0, operators_1.map)(function (n) {
            if (n === 3) {
                throw 'bad';
            }
            return n;
        }), (0, operators_1.retryWhen)(function (errors) {
            return errors.pipe((0, operators_1.map)(function (x) {
                (0, chai_1.expect)(x).to.equal('bad');
                if (retried) {
                    throw new Error('done');
                }
                retried = true;
                return x;
            }));
        }))
            .subscribe({
            next: function (x) {
                (0, chai_1.expect)(x).to.equal(expected[i++]);
            },
            error: function (err) {
                (0, chai_1.expect)(err).to.be.an('error', 'done');
                done();
            },
        });
    });
    it('should retry when notified and complete on returned completion', function (done) {
        var expected = [1, 2, 1, 2];
        (0, rxjs_1.of)(1, 2, 3)
            .pipe((0, operators_1.map)(function (n) {
            if (n === 3) {
                throw 'bad';
            }
            return n;
        }), (0, operators_1.retryWhen)(function () { return rxjs_1.EMPTY; }))
            .subscribe({
            next: function (n) {
                (0, chai_1.expect)(n).to.equal(expected.shift());
            },
            error: function () {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    it('should apply an empty notifier on an empty source', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  |   ');
            var subs = '         (^!)';
            var notifier = cold('|   ');
            var expected = '     |   ';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should apply a never notifier on an empty source', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  |   ');
            var subs = '         (^!)';
            var notifier = cold('-   ');
            var expected = '     |   ';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should apply an empty notifier on a never source', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  ------------------------------------------');
            var unsub = '        -----------------------------------------!';
            var subs = '         ^----------------------------------------!';
            var notifier = cold('|                                         ');
            var expected = '     ------------------------------------------';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should apply a never notifier on a never source', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  -----------------------------------------');
            var unsub = '        -----------------------------------------!';
            var subs = '         ^----------------------------------------!';
            var notifier = cold('------------------------------------------');
            var expected = '     -----------------------------------------';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should return an empty observable given a just-throw source and empty notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable;
            var source = cold('  #');
            var notifier = cold('|');
            var expected = '     |';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
        });
    });
    it('should return a never observable given a just-throw source and never notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable;
            var source = cold('  #');
            var notifier = cold('-');
            var expected = '     -';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
        });
    });
    it('should hide errors using a never notifier on a source with eventual error', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  --a--b--c--#                              ');
            var subs = '         ^----------!                              ';
            var notifier = cold('           -------------------------------');
            var expected = '     --a--b--c---------------------------------';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should propagate error thrown from notifierSelector function', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('--a--b--c--#');
            var subs = '       ^----------!';
            var expected = '   --a--b--c--#';
            var result = source.pipe((0, operators_1.retryWhen)(function () {
                throw 'bad!';
            }));
            expectObservable(result).toBe(expected, undefined, 'bad!');
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should replace error with complete using an empty notifier on a source with eventual error', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  --a--b--c--#');
            var subs = '         ^----------!';
            var notifier = cold('           |');
            var expected = '     --a--b--c--|';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should mirror a basic cold source with complete, given an empty notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  --a--b--c--|');
            var subs = '         ^----------!';
            var notifier = cold('           |');
            var expected = '     --a--b--c--|';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should mirror a basic cold source with no termination, given an empty notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('  --a--b--c---');
            var subs = '         ^-----------';
            var notifier = cold('           |');
            var expected = '     --a--b--c---';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should mirror a basic hot source with complete, given an empty notifier', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('-a-^--b--c--|');
            var subs = '         ^--------!';
            var notifier = cold('         |');
            var expected = '     ---b--c--|';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should handle a hot source that raises error but eventually completes', function () {
        rxTest.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('  -1--2--3----4--5---|                  ');
            var ssubs = [
                '                   ^------!                              ',
                '                   --------------^----!                  ',
            ];
            var notifier = hot('--------------r--------r---r--r--r---|');
            var nsubs = '       -------^-----------!                  ';
            var expected = '    -1--2----------5---|                  ';
            var result = source.pipe((0, operators_1.map)(function (x) {
                if (x === '3') {
                    throw 'error';
                }
                return x;
            }), (0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(ssubs);
            expectSubscriptions(notifier.subscriptions).toBe(nsubs);
        });
    });
    it('should tear down resources when result is unsubscribed early', function () {
        rxTest.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold(' -1--2--#                    ');
            var unsub = '       --------------------!       ';
            var subs = [
                '                   ^------!                    ',
                '                   ---------^------!           ',
                '                   -----------------^--!       ',
            ];
            var notifier = hot('---------r-------r---------#');
            var nsubs = '       -------^------------!       ';
            var expected = '    -1--2-----1--2----1--       ';
            var result = source.pipe((0, operators_1.retryWhen)(function () { return notifier; }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
            expectSubscriptions(notifier.subscriptions).toBe(nsubs);
        });
    });
    it('should not break unsubscription chains when unsubscribed explicitly', function () {
        rxTest.run(function (_a) {
            var hot = _a.hot, cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold(' -1--2--#                    ');
            var subs = [
                '                   ^------!                    ',
                '                   ---------^------!           ',
                '                   -----------------^--!       ',
            ];
            var notifier = hot('---------r-------r-------r-#');
            var nsubs = '       -------^------------!       ';
            var expected = '    -1--2-----1--2----1--       ';
            var unsub = '       --------------------!       ';
            var result = source.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.retryWhen)(function () { return notifier; }), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
            expectSubscriptions(notifier.subscriptions).toBe(nsubs);
        });
    });
    it('should handle a source with eventual error using a dynamic notifier selector which eventually throws', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('-1--2--#              ');
            var subs = [
                '                  ^------!              ',
                '                  -------^------!       ',
                '                  --------------^------!',
            ];
            var expected = '   -1--2---1--2---1--2--#';
            var invoked = 0;
            var result = source.pipe((0, operators_1.retryWhen)(function (errors) {
                return errors.pipe((0, operators_1.map)(function () {
                    if (++invoked === 3) {
                        throw 'error';
                    }
                    else {
                        return 'x';
                    }
                }));
            }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should handle a source with eventual error using a dynamic notifier selector which eventually completes', function () {
        rxTest.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('-1--2--#              ');
            var subs = [
                '                  ^------!              ',
                '                  -------^------!       ',
                '                  --------------^------!',
            ];
            var expected = '   -1--2---1--2---1--2--|';
            var invoked = 0;
            var result = source.pipe((0, operators_1.retryWhen)(function (errors) {
                return errors.pipe((0, operators_1.map)(function () { return 'x'; }), (0, operators_1.takeUntil)(errors.pipe((0, operators_1.mergeMap)(function () {
                    if (++invoked < 3) {
                        return rxjs_1.EMPTY;
                    }
                    else {
                        return (0, rxjs_1.of)('stop!');
                    }
                }))));
            }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should always finalize before starting the next cycle, even when synchronous', function () {
        var results = [];
        var source = new rxjs_1.Observable(function (subscriber) {
            subscriber.next(1);
            subscriber.next(2);
            subscriber.error('bad');
            return function () {
                results.push('finalizer');
            };
        });
        var subscription = source
            .pipe((0, operators_1.retryWhen)(function (errors$) { return errors$.pipe((0, operators_1.mergeMap)(function (err, i) { return (i < 3 ? (0, rxjs_1.of)(true) : (0, rxjs_1.throwError)(function () { return err; })); })); }))
            .subscribe({
            next: function (value) { return results.push(value); },
            error: function (err) { return results.push(err); },
        });
        (0, chai_1.expect)(subscription.closed).to.be.true;
        (0, chai_1.expect)(results).to.deep.equal([1, 2, 'finalizer', 1, 2, 'finalizer', 1, 2, 'finalizer', 1, 2, 'bad', 'finalizer']);
    });
    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.retryWhen)(function () { return (0, rxjs_1.of)(0); }), (0, operators_1.take)(3))
            .subscribe(function () {
        });
        (0, chai_1.expect)(sideEffects).to.deep.equal([0, 1, 2]);
    });
});
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