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Edit File: skip-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var operators_1 = require("rxjs/operators");
var testing_1 = require("rxjs/testing");
var observableMatcher_1 = require("../helpers/observableMatcher");
var rxjs_1 = require("rxjs");
describe('skip', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new testing_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should skip values before a total', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--d--e--|');
            var subs = '      ^----------------!';
            var expected = '  -----------d--e--|';
            expectObservable(source.pipe((0, operators_1.skip)(3))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should skip all values without error if total is more than actual number of values', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--d--e--|');
            var subs = '      ^----------------!';
            var expected = '  -----------------|';
            expectObservable(source.pipe((0, operators_1.skip)(6))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should skip all values without error if total is same as actual number of values', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--d--e--|');
            var subs = '      ^----------------!';
            var expected = '  -----------------|';
            expectObservable(source.pipe((0, operators_1.skip)(5))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should not skip if count is zero', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--d--e--|');
            var subs = '      ^----------------!';
            var expected = '  --a--b--c--d--e--|';
            expectObservable(source.pipe((0, operators_1.skip)(0))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should not skip if count is negative value', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = cold('--a--b--c--d--e--|');
            var subs = '       ^----------------!';
            var expected = '   --a--b--c--d--e--|';
            expectObservable(source.pipe((0, operators_1.skip)(-42))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should allow unsubscribing explicitly and early', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var source = hot('--a--b--c--d--e--|');
            var unsub = '     ----------!       ';
            var subs = '      ^---------!       ';
            var expected = '  --------c--       ';
            expectObservable(source.pipe((0, operators_1.skip)(2)), unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    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 source = hot('--a--b--c--d--e--|');
            var subs = '      ^---------!       ';
            var expected = '  --------c--       ';
            var unsub = '     ----------!       ';
            var result = source.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.skip)(2), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should raise error if skip count is more than actual number of emits and source raises error', 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 = '  --------------#';
            expectObservable(source.pipe((0, operators_1.skip)(6))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should raise error if skip count is same as emits of source and source raises error', 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 = '  --------------#';
            expectObservable(source.pipe((0, operators_1.skip)(4))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should skip values before a total and raises error if source raises error', 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 = '  -----------d--#';
            expectObservable(source.pipe((0, operators_1.skip)(3))).toBe(expected);
            expectSubscriptions(source.subscriptions).toBe(subs);
        });
    });
    it('should complete regardless of skip count if 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 = '|';
            expectObservable(e1.pipe((0, operators_1.skip)(3))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not complete if source never completes without emit', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  -');
            var e1subs = '  ^';
            var expected = '-';
            expectObservable(e1.pipe((0, operators_1.skip)(3))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should skip values before total and never completes if source emits and does not complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--c-');
            var e1subs = '  ^         ';
            var expected = '-----b--c-';
            expectObservable(e1.pipe((0, operators_1.skip)(1))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should skip all values and never completes if total is more than numbers of value and source does not complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--c-');
            var e1subs = '  ^         ';
            var expected = '----------';
            expectObservable(e1.pipe((0, operators_1.skip)(6))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should skip all values and never completes if total is same asnumbers of value and source does not complete', function () {
        testScheduler.run(function (_a) {
            var hot = _a.hot, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = hot('  --a--b--c-');
            var e1subs = '  ^         ';
            var expected = '----------';
            expectObservable(e1.pipe((0, operators_1.skip)(3))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should raise error if source throws', 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.skip)(3))).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    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.skip)(1), (0, operators_1.take)(2)).subscribe(function () {
        });
        (0, chai_1.expect)(sideEffects).to.deep.equal([0, 1, 2]);
    });
});
//# sourceMappingURL=skip-spec.js.map

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