77 lines
2.7 KiB
TypeScript
77 lines
2.7 KiB
TypeScript
// Copyright 2021 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 {
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formatAcceptLanguageHeader,
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getUserLanguages,
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} from '../../util/userLanguages';
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describe('user language utilities', () => {
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describe('formatAcceptLanguageHeader', () => {
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it('returns * if no languages are provided', () => {
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assert.strictEqual(formatAcceptLanguageHeader([]), '*');
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});
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it('formats one provided language', () => {
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assert.strictEqual(formatAcceptLanguageHeader(['en-US']), 'en-US');
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});
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it('formats three provided languages', () => {
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assert.strictEqual(
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formatAcceptLanguageHeader('abc'.split('')),
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'a, b;q=0.9, c;q=0.8'
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);
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});
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it('formats 10 provided languages', () => {
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assert.strictEqual(
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formatAcceptLanguageHeader('abcdefghij'.split('')),
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'a, b;q=0.9, c;q=0.8, d;q=0.7, e;q=0.6, f;q=0.5, g;q=0.4, h;q=0.3, i;q=0.2, j;q=0.1'
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);
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});
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it('formats 11 provided languages', () => {
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assert.strictEqual(
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formatAcceptLanguageHeader('abcdefghijk'.split('')),
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'a, b;q=0.9, c;q=0.8, d;q=0.7, e;q=0.6, f;q=0.5, g;q=0.4, h;q=0.3, i;q=0.2, j;q=0.1, k;q=0.09'
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);
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});
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it('formats 19 provided languages', () => {
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assert.strictEqual(
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formatAcceptLanguageHeader('abcdefghijklmnopqrs'.split('')),
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'a, b;q=0.9, c;q=0.8, d;q=0.7, e;q=0.6, f;q=0.5, g;q=0.4, h;q=0.3, i;q=0.2, j;q=0.1, k;q=0.09, l;q=0.08, m;q=0.07, n;q=0.06, o;q=0.05, p;q=0.04, q;q=0.03, r;q=0.02, s;q=0.01'
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);
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});
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it('formats 20 provided languages', () => {
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assert.strictEqual(
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formatAcceptLanguageHeader('abcdefghijklmnopqrst'.split('')),
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'a, b;q=0.9, c;q=0.8, d;q=0.7, e;q=0.6, f;q=0.5, g;q=0.4, h;q=0.3, i;q=0.2, j;q=0.1, k;q=0.09, l;q=0.08, m;q=0.07, n;q=0.06, o;q=0.05, p;q=0.04, q;q=0.03, r;q=0.02, s;q=0.01, t;q=0.009'
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);
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});
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it('only formats the first 28 languages', () => {
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const result = formatAcceptLanguageHeader(
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'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'.split('')
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);
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assert.include(result, 'B;q=0.001');
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assert.notInclude(result, 'C');
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assert.notInclude(result, 'D');
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assert.notInclude(result, 'E');
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assert.notInclude(result, 'Z');
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});
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});
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describe('getUserLanguages', () => {
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it('returns the fallback if no languages are provided', () => {
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assert.deepEqual(getUserLanguages([], 'fallback'), ['fallback']);
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assert.deepEqual(getUserLanguages(undefined, 'fallback'), ['fallback']);
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});
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it('returns the provided languages', () => {
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assert.deepEqual(getUserLanguages(['a', 'b', 'c'], 'x'), ['a', 'b', 'c']);
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});
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});
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});
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