JezK

Edit File: buffer-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var operators_1 = require("rxjs/operators");
var rxjs_1 = require("rxjs");
var testing_1 = require("rxjs/testing");
var observableMatcher_1 = require("../helpers/observableMatcher");
var chai_1 = require("chai");
describe('Observable.prototype.buffer', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should emit buffers that close and reopen', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('   -a-b-c-d-e-f-g-h-i-|');
            var b = hot('   -----B-----B-----B-|');
            var expected = '-----x-----y-----z-(F|)';
            var expectedValues = {
                x: ['a', 'b', 'c'],
                y: ['d', 'e', 'f'],
                z: ['g', 'h', 'i'],
                F: [],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues);
        });
    });
    it('should emit a final buffer if the closingNotifier is already complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('   -a-b-c-d-e-f-g-h-i-|');
            var b = hot('   -----B-----B--|');
            var expected = '-----x-----y-------(F|)';
            var expectedValues = {
                x: ['a', 'b', 'c'],
                y: ['d', 'e', 'f'],
                F: ['g', 'h', 'i'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues);
        });
    });
    it('should emit all buffered values if the source completes before the closingNotifier does', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('---^---a---b---c---d---e--f----|');
            var sourceSubs = '   ^---------------------------!';
            var closer = hot('---^-------------B----------------');
            var closerSubs = '   ^---------------------------!';
            var expected = '     --------------x-------------(F|)';
            var result = source.pipe((0, operators_1.buffer)(closer));
            var expectedValues = {
                x: ['a', 'b', 'c'],
                F: ['d', 'e', 'f'],
            };
            expectObservable(result).toBe(expected, expectedValues);
            expectSubscriptions(source.subscriptions).toBe(sourceSubs);
            expectSubscriptions(closer.subscriptions).toBe(closerSubs);
        });
    });
    it('should work with empty and empty selector', function () {
        testScheduler.run(function (_a) {
            var expectObservable = _a.expectObservable;
            var a = rxjs_1.EMPTY;
            var b = rxjs_1.EMPTY;
            var expected = '(F|)';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, { F: [] });
        });
    });
    it('should work with empty and non-empty selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = rxjs_1.EMPTY;
            var b = hot('-----a-----');
            var expected = '(F|)';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, { F: [] });
        });
    });
    it('should work with non-empty and empty selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var b = rxjs_1.EMPTY;
            var expected = '     --------------------------------(F|)';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, {
                F: ['3', '4', '5', '6', '7', '8', '9', '0'],
            });
        });
    });
    it('should work with never and never selector', function () {
        testScheduler.run(function (_a) {
            var expectObservable = _a.expectObservable;
            var a = rxjs_1.NEVER;
            var b = rxjs_1.NEVER;
            var expected = '-';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected);
        });
    });
    it('should work with never and empty selector', function () {
        testScheduler.run(function (_a) {
            var expectObservable = _a.expectObservable;
            var a = rxjs_1.NEVER;
            var b = rxjs_1.EMPTY;
            var expected = '-';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected);
        });
    });
    it('should work with empty and never selector', function () {
        testScheduler.run(function (_a) {
            var expectObservable = _a.expectObservable;
            var a = rxjs_1.EMPTY;
            var b = rxjs_1.NEVER;
            var expected = '(F|)';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, { F: [] });
        });
    });
    it('should work with non-empty and throw selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('---^--a--');
            var b = (0, rxjs_1.throwError)(function () { return new Error('too bad'); });
            var expected = '#';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, null, new Error('too bad'));
        });
    });
    it('should work with throw and non-empty selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = (0, rxjs_1.throwError)(function () { return new Error('too bad'); });
            var b = hot('---^--a--');
            var expected = '#';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, null, new Error('too bad'));
        });
    });
    it('should work with error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('---^-------#', undefined, new Error('too bad'));
            var b = hot('---^--------');
            var expected = '--------#';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, null, new Error('too bad'));
        });
    });
    it('should work with error and non-empty selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('---^-------#', undefined, new Error('too bad'));
            var b = hot('---^---a----');
            var expected = '----a---#';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, { a: [] }, new Error('too bad'));
        });
    });
    it('should work with selector', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var b = hot('--------^--a-------b---cd---------e---f---|');
            var expected = '     ---a-------b---cd---------e---f-(F|)';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
                c: ['6'],
                d: [],
                e: ['7', '8', '9'],
                f: ['0'],
                F: [],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues);
        });
    });
    it('should work with selector completed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var subs = '         ^-------------------------------!';
            var b = hot('--------^--a-------b---cd|               ');
            var expected = '     ---a-------b---cd---------------(F|)';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
                c: ['6'],
                d: [],
                F: ['7', '8', '9', '0'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues);
            expectSubscriptions(a.subscriptions).toBe(subs);
        });
    });
    it('should allow unsubscribing the result Observable early', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var unsub = '        --------------!                  ';
            var subs = '         ^-------------!                  ';
            var b = hot('--------^--a-------b---cd|               ');
            var expected = '     ---a-------b---                  ';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b)), unsub).toBe(expected, expectedValues);
            expectSubscriptions(a.subscriptions).toBe(subs);
        });
    });
    it('should not break unsubscription chains when unsubscribed explicitly', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var subs = '         ^-------------!                  ';
            var b = hot('--------^--a-------b---cd|               ');
            var expected = '     ---a-------b---                  ';
            var unsub = '        --------------!                  ';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
            };
            var result = a.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.buffer)(b), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected, expectedValues);
            expectSubscriptions(a.subscriptions).toBe(subs);
        });
    });
    it('should work with non-empty and selector error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('--1--2--^--3-----#', { '3': 3 }, new Error('too bad'));
            var subs = '         ^--------!';
            var b = hot('--------^--a--b---');
            var expected = '     ---a--b--#';
            var expectedValues = {
                a: [3],
                b: [],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues, new Error('too bad'));
            expectSubscriptions(a.subscriptions).toBe(subs);
        });
    });
    it('should work with non-empty and empty selector error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var b = hot('--------^----------------#', undefined, new Error('too bad'));
            var expected = '     -----------------#';
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, null, new Error('too bad'));
        });
    });
    it('should work with non-empty and selector error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var obj = { a: true, b: true, c: true };
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var subs = '         ^----------------!';
            var b = hot('--------^--a-------b---c-#', obj, new Error('too bad'));
            var expected = '     ---a-------b---c-#';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
                c: ['6'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b))).toBe(expected, expectedValues, new Error('too bad'));
            expectSubscriptions(a.subscriptions).toBe(subs);
        });
    });
    it('should unsubscribe notifier when source unsubscribed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('--1--2--^--3--4--5---6----7--8--9---0---|');
            var unsub = '        --------------!                  ';
            var subs = '         ^-------------!                  ';
            var b = hot('--------^--a-------b---cd|               ');
            var bsubs = '        ^-------------!                  ';
            var expected = '     ---a-------b---                  ';
            var expectedValues = {
                a: ['3'],
                b: ['4', '5'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b)), unsub).toBe(expected, expectedValues);
            expectSubscriptions(a.subscriptions).toBe(subs);
            expectSubscriptions(b.subscriptions).toBe(bsubs);
        });
    });
    it('should unsubscribe notifier when source unsubscribed', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var a = hot('   -a-b-c-d-e-f-g-h-i-|');
            var b = hot('   -----1-----2-----3-|');
            var bsubs = '   ^----!';
            var expected = '-----(x|)';
            var expectedValues = {
                x: ['a', 'b', 'c'],
            };
            expectObservable(a.pipe((0, operators_1.buffer)(b), (0, operators_1.take)(1))).toBe(expected, expectedValues);
            expectSubscriptions(b.subscriptions).toBe(bsubs);
        });
    });
    it('should emit properly with an observable using itself as a notifier', function () {
        var results = [];
        var subject = new rxjs_1.Subject();
        subject.pipe((0, operators_1.buffer)(subject)).subscribe({
            next: function (value) { return results.push(value); },
            complete: function () { return results.push('complete'); },
        });
        subject.next(1);
        (0, chai_1.expect)(results).to.deep.equal([[1]]);
        subject.next(2);
        (0, chai_1.expect)(results).to.deep.equal([[1], [2]]);
        subject.complete();
        (0, chai_1.expect)(results).to.deep.equal([[1], [2], [], 'complete']);
    });
    describe('equivalence with the window operator', function () {
        var cases = [
            {
                source: '   -a-b-c-d-e-f-g-h-i-|',
                notifier: ' -----B-----B-----B-|',
            },
            {
                source: '   -a-b-c-d-e-f-g-h-i-|',
                notifier: ' -----B-----B--|     ',
            },
            {
                source: '   -a-b-c-d-e---------|',
                notifier: ' -----B-----B-----B-|',
            },
            {
                source: '   -a-b-c-d-e-f-g-h-i-|',
                notifier: ' -------------------|',
            },
        ];
        cases.forEach(function (_a, index) {
            var source = _a.source, notifier = _a.notifier;
            it("should be equivalent for case ".concat(index), function () {
                testScheduler.run(function (_a) {
                    var hot = _a.hot, expectObservable = _a.expectObservable;
                    var a = hot(source);
                    var b = hot(notifier);
                    expectObservable(a.pipe((0, operators_1.buffer)(b))).toEqual(a.pipe((0, operators_1.window)(b), (0, operators_1.mergeMap)(function (w) { return w.pipe((0, operators_1.toArray)()); })));
                });
            });
        });
    });
});
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