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Edit File: count-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
var testing_1 = require("rxjs/testing");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('count', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should count the values of an observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--|');
            var subs = '      ^----------!';
            var expected = '  -----------(x|)';
            expectObservable(source.pipe((0, operators_1.count)())).toBe(expected, { x: 3 });
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should be never when source is never', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' -');
            var e1subs = '  ^';
            var expected = '-';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should be zero when source is empty', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' |');
            var e1subs = '  (^!)';
            var expected = '(w|)';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it("should be never when source doesn't complete", function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('--x--^--y--');
            var e1subs = '     ^     ';
            var expected = '   ------';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it("should be zero when source doesn't have values", function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^---|');
            var e1subs = '   ^---!';
            var expected = ' ----(w|)';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should count the unique value of an observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^--y--|');
            var e1subs = '   ^-----!';
            var expected = ' ------(w|)';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected, { w: 1 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should count the values of an ongoing hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a-^-b--c--d--|');
            var subs = '          ^----------!';
            var expected = '      -----------(x|)';
            expectObservable(source.pipe((0, operators_1.count)())).toBe(expected, { x: 3 });
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should count a range() source observable', function (done) {
        (0, rxjs_1.range)(1, 10)
            .pipe((0, operators_1.count)())
            .subscribe({
            next: function (value) {
                (0, chai_1.expect)(value).to.equal(10);
            },
            error: function (x) {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    it('should count a range().skip(1) source observable', function (done) {
        (0, rxjs_1.range)(1, 10)
            .pipe((0, operators_1.skip)(1), (0, operators_1.count)())
            .subscribe({
            next: function (value) {
                (0, chai_1.expect)(value).to.equal(9);
            },
            error: function (x) {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    it('should count a range().take(1) source observable', function (done) {
        (0, rxjs_1.range)(1, 10)
            .pipe((0, operators_1.take)(1), (0, operators_1.count)())
            .subscribe({
            next: function (value) {
                (0, chai_1.expect)(value).to.equal(1);
            },
            error: function (x) {
                done(new Error('should not be called'));
            },
            complete: function () {
                done();
            },
        });
    });
    it('should work with error', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^--y--z--#', { x: 1, y: 2, z: 3 }, 'too bad');
            var e1subs = '   ^--------!';
            var expected = ' ---------#';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected, null, 'too bad');
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work with throw', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' #');
            var e1subs = '  (^!)';
            var expected = '#';
            expectObservable(e1.pipe((0, operators_1.count)())).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-true predicate on an empty hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^---|');
            var e1subs = '   ^---!';
            var expected = ' ----(w|)';
            var predicate = function () {
                return true;
            };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-false predicate on an empty hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^---|');
            var e1subs = '   ^---!';
            var expected = ' ----(w|)';
            var predicate = function () {
                return false;
            };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-true predicate on a simple hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^-a-|');
            var e1subs = '   ^---!';
            var expected = ' ----(w|)';
            var predicate = function () {
                return true;
            };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 1 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-false predicate on a simple hot observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^-a-|');
            var e1subs = '   ^---!';
            var expected = ' ----(w|)';
            var predicate = function () {
                return false;
            };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should allow unsubscribing early and explicitly', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^-2--3--4-|');
            var e1subs = '   ^-----!    ';
            var expected = ' -------    ';
            var unsub = '    ------!    ';
            var result = e1.pipe((0, operators_1.count)(function (value) { return parseInt(value) < 10; }));
            expectObservable(result, unsub).toBe(expected, { w: 3 });
            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('-1-^-2--3--4-|');
            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.count)(function (value) { return parseInt(value) < 10; }), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected, { w: 3 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle a match-all predicate on observable with many values', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^-2--3--4-|');
            var e1subs = '   ^---------!';
            var expected = ' ----------(w|)';
            var predicate = function (value) { return parseInt(value) < 10; };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 3 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle a match-none predicate on observable with many values', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^-2--3--4-|');
            var e1subs = '   ^---------!';
            var expected = ' ----------(w|)';
            var predicate = function (value) { return parseInt(value) > 10; };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected, { w: 0 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-true predicate on observable that throws', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^---#');
            var e1subs = '   ^---!';
            var expected = ' ----#';
            var predicate = function () { return true; };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-false predicate on observable that throws', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^---#');
            var e1subs = '   ^---!';
            var expected = ' ----#';
            var predicate = function () { return false; };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle an always-true predicate on a hot never-observable', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-x-^----');
            var e1subs = '   ^    ';
            var expected = ' -----';
            var predicate = function () { return true; };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should handle a predicate that throws, on observable with many values', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('-1-^-2--3--|');
            var e1subs = '   ^----!   ';
            var expected = ' -----#   ';
            var predicate = function (value) {
                if (value === '3') {
                    throw 'error';
                }
                return true;
            };
            expectObservable(e1.pipe((0, operators_1.count)(predicate))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
});
//# sourceMappingURL=count-spec.js.map

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