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Edit File: reduce-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var testing_1 = require("rxjs/testing");
var operators_1 = require("rxjs/operators");
var rxjs_1 = require("rxjs");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('reduce', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should reduce', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var values = { a: 1, b: 3, c: 5, x: 9 };
            var e1 = hot('  --a--b--c--|   ', values);
            var e1subs = '  ^----------!   ';
            var expected = '-----------(x|)';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, 0));
            expectObservable(result).toBe(expected, values);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should reduce with seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--|   ');
            var e1subs = '  ^-------!   ';
            var expected = '--------(x|)';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + ' ' + x; }, 'n'));
            expectObservable(result).toBe(expected, { x: 'n a b' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should reduce with a seed of undefined', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('--a--^--b--c--d--e--f--g--|   ');
            var e1subs = '     ^--------------------!   ';
            var expected = '   ---------------------(x|)';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + ' ' + x; }, undefined));
            expectObservable(result).toBe(expected, { x: 'undefined b c d e f g' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should reduce without a seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('--a--^--b--c--d--e--f--g--|   ');
            var e1subs = '     ^--------------------!   ';
            var expected = '   ---------------------(x|)';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + ' ' + x; }));
            expectObservable(result).toBe(expected, { x: 'b c d e f g' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should reduce with index without seed', function () {
        var idx = [1, 2, 3, 4, 5];
        (0, rxjs_1.range)(0, 6)
            .pipe((0, operators_1.reduce)(function (acc, value, index) {
            (0, chai_1.expect)(idx.shift()).to.equal(index);
            return value;
        }))
            .subscribe({
            complete: function () {
                (0, chai_1.expect)(idx).to.be.empty;
            },
        });
    });
    it('should reduce with index with seed', function () {
        var idx = [0, 1, 2, 3, 4, 5];
        (0, rxjs_1.range)(0, 6)
            .pipe((0, operators_1.reduce)(function (acc, value, index) {
            (0, chai_1.expect)(idx.shift()).to.equal(index);
            return value;
        }, -1))
            .subscribe({
            complete: function () {
                (0, chai_1.expect)(idx).to.be.empty;
            },
        });
    });
    it('should reduce with seed if source is empty', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('--a--^-------|   ');
            var e1subs = '     ^-------!   ';
            var expected = '   --------(x|)';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, '42'));
            expectObservable(result).toBe(expected, { x: '42' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if reduce function throws without seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--|');
            var e1subs = '  ^----!   ';
            var expected = '-----#   ';
            var result = e1.pipe((0, operators_1.reduce)(function () {
                throw 'error';
            }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should allow unsubscribing explicitly and early', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--|');
            var e1subs = '  ^-----!  ';
            var expected = '-------  ';
            var unsub = '   ------!  ';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            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, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--|');
            var e1subs = '  ^-----!  ';
            var expected = '-------  ';
            var unsub = '   ------!  ';
            var result = e1.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.reduce)(function (o, x) { return o + x; }), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if source emits and raises error with seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--#');
            var e1subs = '  ^-------!';
            var expected = '--------#';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, '42'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if source raises error with seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ----#');
            var e1subs = '  ^---!';
            var expected = '----#';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, '42'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if reduce function throws with seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--|');
            var e1subs = '  ^-!      ';
            var expected = '--#      ';
            var result = e1.pipe((0, operators_1.reduce)(function () {
                throw 'error';
            }, 'n'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete with seed if source emits but does not complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--');
            var e1subs = '  ^----';
            var expected = '-----';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, 'n'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete with seed if source never completes', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' -');
            var e1subs = '  ^';
            var expected = '-';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }, 'n'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete without seed if source emits but does not completes', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--');
            var e1subs = '  ^-------';
            var expected = '--------';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete without seed if source never completes', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' -');
            var e1subs = '  ^';
            var expected = '-';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should reduce if source does not emit without seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('--a--^-------|');
            var e1subs = '     ^-------!';
            var expected = '   --------|';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if source emits and raises error without seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--#');
            var e1subs = '  ^-------!';
            var expected = '--------#';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if source raises error without seed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  ----#');
            var e1subs = '  ^---!';
            var expected = '----#';
            var result = e1.pipe((0, operators_1.reduce)(function (o, x) { return o + x; }));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
});
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