mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-15 16:06:41 +03:00
Joey Parrish
7091275cbf
This replaces almost every instance of indexOf on both String and Array. There are very few places where we really wanted an index. Mostly, indexOf was used to check for inclusion. Change-Id: I08e299768b6ffdb4bfc30b39b5d82a058c6d1b56
94 lines
3.0 KiB
JavaScript
94 lines
3.0 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('ArrayUtils', function() {
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const ArrayUtils = shaka.util.ArrayUtils;
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describe('removeDuplicates', function() {
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it('will remove duplicate elements', function() {
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let arr = [1, 2, 2, 5, 6, 3, 1, 2];
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expect(ArrayUtils.removeDuplicates(arr)).toEqual([1, 2, 5, 6, 3]);
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});
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it('removes duplicate NaN', function() {
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let arr = [NaN, 1, NaN, 2, NaN, NaN];
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expect(ArrayUtils.removeDuplicates(arr)).toEqual([NaN, 1, 2]);
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});
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it('does nothing if no duplicates', function() {
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let arr = [1, 2, 3, 6, 5, 4];
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expect(ArrayUtils.removeDuplicates(arr)).toEqual(arr);
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});
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it('accepts an optional comparator', function() {
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let arr = ['aaa', 'abc', 'bat', 'car', 'cat'];
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let comparator = function(a, b) { return a[0] === b[0]; };
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expect(ArrayUtils.removeDuplicates(arr, comparator))
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.toEqual(['aaa', 'bat', 'car']);
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});
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});
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describe('hasSameElements', function() {
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it('determines same elements', () => {
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expectEqual([], []);
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expectEqual([1, 2, 3], [1, 2, 3]);
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expectEqual([1, 2, 3], [3, 2, 1]);
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expectEqual([1, 1, 2], [1, 2, 1]);
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expectEqual([1, 2, 2, 1], [1, 2, 1, 2]);
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expectEqual([1, NaN, NaN], [NaN, NaN, 1]);
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expectNotEqual([1], [2]);
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expectNotEqual([1, 2], [1]);
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expectNotEqual([1, 1, 2], [1, 2]);
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expectNotEqual([1, 2], [1, 1, 2]);
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expectNotEqual([1, 2], [1, 2, 3]);
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expectNotEqual([1, 2, 3, 1], [1, 2, 1, 2]);
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});
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it('handles different types', () => {
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expectEqual(['1', 2], [2, '1']);
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const a = {};
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expectEqual([a], [a]);
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expectEqual([1, a], [a, 1]);
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expectNotEqual(['f'], [NaN]);
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expectNotEqual([{}], [{}]);
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expectNotEqual([1], [{}]);
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expectNotEqual([1], ['1']);
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});
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it('allows custom comparer', () => {
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const comp = (a, b) => a.i == b.i;
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expectEqual([{i: 1}], [{i: 1}], comp);
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expectEqual([{i: 1}, {i: 2}], [{i: 2}, {i: 1}], comp);
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expectEqual([{i: 1}, {i: 1}], [{i: 1}, {i: 1}], comp);
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expectEqual([{i: 1, x: 1}], [{i: 1, x: 2}], comp);
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expectNotEqual([{i: 1}], [{i: 1}, {i: 1}], comp);
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expectNotEqual([{i: 1}], [{i: 2}], comp);
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});
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function expectEqual(a, b, comp = undefined) {
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expect(ArrayUtils.hasSameElements(a, b, comp)).toBe(true);
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}
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function expectNotEqual(a, b, comp = undefined) {
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expect(ArrayUtils.hasSameElements(a, b, comp)).toBe(false);
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}
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});
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});
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