30 lines
918 B
TypeScript
30 lines
918 B
TypeScript
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// Copyright 2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { assert } from 'chai';
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import { sortByTitle } from '../../util/sortByTitle';
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describe('sortByTitle', () => {
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it("does nothing to arrays that don't need to be sorted", () => {
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assert.deepEqual(sortByTitle([]), []);
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assert.deepEqual(sortByTitle([{ title: 'foo' }]), [{ title: 'foo' }]);
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});
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it('sorts the array by title', () => {
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// Because the function relies on locale-aware comparisons, we don't have very
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// thorough tests here, as it can change based on platform.
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assert.deepEqual(sortByTitle([{ title: 'foo' }, { title: 'bar' }]), [
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{ title: 'bar' },
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{ title: 'foo' },
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]);
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});
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it("doesn't mutate its argument", () => {
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const arr = [{ title: 'foo' }, { title: 'bar' }];
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sortByTitle(arr);
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assert.deepEqual(arr, [{ title: 'foo' }, { title: 'bar' }]);
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});
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});
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