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i18n: introduce script to swap in new locale to LHR #8755

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Jun 25, 2019
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add start of a test.
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paulirish committed Apr 30, 2019
commit e12f7144ab31fe9b31ba2a7cfc27d22f2af165d8
4 changes: 4 additions & 0 deletions lighthouse-core/lib/i18n/swap-locale.js
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Expand Up @@ -15,8 +15,12 @@ const i18n = require('./i18n.js');
* Replaces all strings within an LHR with ones from a different locale
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I wonder if this might be worth being the place where we explain how the icuMessagePaths property is setup and meant to be used?

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* @param {LH.Result} lhr
* @param {LH.Locale} requestedLocale
* @return {LH.Result}
*/
function swapLocale(lhr, requestedLocale) {
// copy LHR to avoid mutating provided LHR
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lhr = JSON.parse(JSON.stringify(lhr));

const locale = i18n.lookupLocale(requestedLocale);
const {icuMessagePaths} = lhr.i18n;

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28 changes: 28 additions & 0 deletions lighthouse-core/test/lib/i18n/swap-locale-test.js
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/**
* @license Copyright 2018 Google Inc. All Rights Reserved.
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2019 :)

* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
*/
'use strict';

const swapLocale = require('../../../lib/i18n/swap-locale.js');

const lhr = require('../../results/sample_v2.json');

/* eslint-env jest */

describe('swap-locale', () => {

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it('can change golden LHR english strings into spanish', () => {
const lhrEn = /** @type {LH.Result} */ (JSON.parse(JSON.stringify(lhr)));

expect(lhrEn.audits.plugins.title).toEqual('Document avoids plugins');
expect(lhrEn.audits['dom-size'].displayValue).toEqual('31 elements');

const lhrEs = swapLocale(lhrEn, 'es');

// Basic replacement
expect(lhrEs.audits.plugins.title).toEqual('El documento no usa complementos');
// With ICU string argument values
expect(lhrEs.audits['dom-size'].displayValue).toEqual('31 nodos');
});

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});