mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-07-02 18:49:36 +03:00
Aaron Vaage
c47ecb859e
To avoid always having to create arrays to do array-like methods I have created a util that recreates some of those simple yet useful methods that will act on any iterable or iterator. This should make it easier to work with Set and Map. Change-Id: Iec868fda4c9d018f813e824ea197ef914436fee3
69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
/**
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* @license
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* Copyright 2016 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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describe('Iterables', function() {
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const Iterables = shaka.util.Iterables;
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describe('map', function() {
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const map = Iterables.map;
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it('works with no items', function() {
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const input = new Set([]);
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const output = Array.from(map(input, (x) => -x));
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expect(output).toEqual([]);
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});
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it('works with items', function() {
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const input = new Set([1, 2, 3]);
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const output = Array.from(map(input, (x) => -x));
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expect(output).toEqual([-1, -2, -3]);
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});
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});
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describe('every', function() {
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const every = Iterables.every;
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it('works with no items', function() {
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const input = new Set([]);
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expect(every(input, (x) => x >= 0)).toBeTruthy();
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});
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it('works with items', function() {
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const input = new Set([0, 1, 2, 3]);
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expect(every(input, (x) => x >= 0)).toBeTruthy();
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expect(every(input, (x) => x > 0)).toBeFalsy();
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});
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});
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describe('some', function() {
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const some = Iterables.some;
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it('works with no items', function() {
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const input = new Set([]);
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expect(some(input, (x) => x >= 2)).toBeFalsy();
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});
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it('works with items', function() {
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const input = new Set([0, 1, 2, 3]);
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expect(some(input, (x) => x > 2)).toBeTruthy();
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expect(some(input, (x) => x < 0)).toBeFalsy();
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});
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});
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});
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