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Edit File: pluck-spec.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var chai_1 = require("chai");
var TestScheduler_1 = require("rxjs/internal/testing/TestScheduler");
var operators_1 = require("rxjs/operators");
var rxjs_1 = require("rxjs");
var observableMatcher_1 = require("../helpers/observableMatcher");
describe('pluck', function () {
    var testScheduler;
    beforeEach(function () {
        testScheduler = new TestScheduler_1.TestScheduler(observableMatcher_1.observableMatcher);
    });
    it('should dematerialize an Observable', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = {
                a: '{v:1}',
                b: '{v:2}',
                c: '{v:3}',
            };
            var e1 = cold(' --a--b--c--|', inputs);
            var e1subs = '  ^----------!';
            var expected = '--x--y--z--|';
            var result = e1.pipe((0, operators_1.map)(function (x) { return ({ v: x.charAt(3) }); }), (0, operators_1.pluck)('v'));
            expectObservable(result).toBe(expected, { x: '1', y: '2', z: '3' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work for one array', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = { x: ['abc'] };
            var e1 = cold(' --x--|', inputs);
            var e1subs = '  ^----!';
            var expected = '--y--|';
            var result = e1.pipe((0, operators_1.pluck)(0));
            expectObservable(result).toBe(expected, { y: 'abc' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work for one object', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = { x: { prop: 42 } };
            var e1 = cold(' --x--|', inputs);
            var e1subs = '  ^----!';
            var expected = '--y--|';
            var result = e1.pipe((0, operators_1.pluck)('prop'));
            expectObservable(result).toBe(expected, { y: 42 });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work for multiple objects', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = {
                a: { prop: '1' },
                b: { prop: '2' },
                c: { prop: '3' },
                d: { prop: '4' },
                e: { prop: '5' },
            };
            var e1 = cold(' --a-b--c-d---e-|', inputs);
            var e1subs = '  ^--------------!';
            var expected = '--1-2--3-4---5-|';
            var result = e1.pipe((0, operators_1.pluck)('prop'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work with deep nested properties', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = {
                a: { a: { b: { c: '1' } } },
                b: { a: { b: { c: '2' } } },
                c: { a: { b: { c: '3' } } },
                d: { a: { b: { c: '4' } } },
                e: { a: { b: { c: '5' } } },
            };
            var e1 = cold(' --a-b--c-d---e-|', inputs);
            var e1subs = '  ^--------------!';
            var expected = '--1-2--3-4---5-|';
            var result = e1.pipe((0, operators_1.pluck)('a', 'b', 'c'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should work with edge cases of deep nested properties', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = {
                a: { i: { j: { k: 1 } } },
                b: { i: { j: 2 } },
                c: { i: { k: { k: 3 } } },
                d: {},
                e: { i: { j: { k: 5 } } },
            };
            var e1 = cold(' --a-b--c-d---e-|', inputs);
            var e1subs = '  ^--------------!';
            var expected = '--v-w--x-y---z-|';
            var values = { v: 1, w: undefined, x: undefined, y: undefined, z: 5 };
            var result = e1.pipe((0, operators_1.pluck)('i', 'j', 'k'));
            expectObservable(result).toBe(expected, values);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should throw an error if not property is passed', function () {
        (0, chai_1.expect)(function () {
            (0, rxjs_1.of)({ prop: 1 }, { prop: 2 }).pipe((0, operators_1.pluck)());
        }).to.throw(Error, 'list of properties cannot be empty.');
    });
    it('should propagate errors from observable that emits only errors', 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.pluck)('whatever'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should propagate errors from observable that emit values', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = { a: { prop: '1' }, b: { prop: '2' } };
            var e1 = cold(' --a--b--#', inputs, 'too bad');
            var e1subs = '  ^-------!';
            var expected = '--1--2--#';
            var result = e1.pipe((0, operators_1.pluck)('prop'));
            expectObservable(result).toBe(expected, undefined, 'too bad');
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not pluck an empty observable', 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.pluck)('whatever'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should allow unsubscribing explicitly and early', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var e1 = cold(' --a--b--c--|', { a: { prop: '1' }, b: { prop: '2' } });
            var e1subs = '  ^-----!     ';
            var expected = '--1--2-     ';
            var unsub = '   ------!     ';
            var result = e1.pipe((0, operators_1.pluck)('prop'));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should pluck twice', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = {
                a: { a: { b: { c: '1' } } },
                b: { a: { b: { c: '2' } } },
                c: { a: { b: { c: '3' } } },
                d: { a: { b: { c: '4' } } },
                e: { a: { b: { c: '5' } } },
            };
            var e1 = cold(' --a-b--c-d---e-|', inputs);
            var e1subs = '  ^--------------!';
            var expected = '--1-2--3-4---5-|';
            var result = e1.pipe((0, operators_1.pluck)('a', 'b'), (0, operators_1.pluck)('c'));
            expectObservable(result).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not break unsubscription chain when unsubscribed explicitly', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = { a: { prop: '1' }, b: { prop: '2' } };
            var e1 = cold(' --a--b--c--|', inputs);
            var e1subs = '  ^-----!     ';
            var expected = '--1--2-     ';
            var unsub = '   ------!     ';
            var result = e1.pipe((0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }), (0, operators_1.pluck)('prop'), (0, operators_1.mergeMap)(function (x) { return (0, rxjs_1.of)(x); }));
            expectObservable(result, unsub).toBe(expected);
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should support symbols', function () {
        testScheduler.run(function (_a) {
            var _b;
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var sym = Symbol('sym');
            var inputs = { x: (_b = {}, _b[sym] = 'abc', _b) };
            var e1 = cold(' --x--|', inputs);
            var e1subs = '  ^----!';
            var expected = '--y--|';
            var result = e1.pipe((0, operators_1.pluck)(sym));
            expectObservable(result).toBe(expected, { y: 'abc' });
            expectSubscriptions(e1.subscriptions).toBe(e1subs);
        });
    });
    it('should not break on null values', function () {
        testScheduler.run(function (_a) {
            var cold = _a.cold, expectObservable = _a.expectObservable, expectSubscriptions = _a.expectSubscriptions;
            var inputs = { x: null };
            var e1 = cold(' --x--|', inputs);
            var e1subs = '  ^----!';
            var expected = '--y--|';
            var result = e1.pipe((0, operators_1.pluck)('prop'));
            expectObservable(result).toBe(expected, { y: undefined });
            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.pluck)('whatever'), (0, operators_1.take)(3)).subscribe(function () {
        });
        (0, chai_1.expect)(sideEffects).to.deep.equal([0, 1, 2]);
    });
});
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