酶测试window.navigator.language

Question

我有'react intl'并尝试用酶模拟window.navigator.language，该怎么做。我还使用js-dom，其中global.navigator = window.navigator。 beforeEach language and languages

中的实际定义方式

intl

import enLocaleData from './en.json'
import nlLocaleData from './nl.json'

const localeData = {en: enLocaleData, nl: nlLocaleData}

addLocaleData([...en, ...nl])


// Split locales with a region code
const language = window.navigator.languages && navigator.languages[0]
                     || window.navigator.language - I can not coverage this case ?
                     || window.navigator.userLanguage

// locale without region code, fallback to 'en'
const languageWithoutRegionCode = language.toLowerCase().split(/[_-]+/)[0]

const messages = localeData[languageWithoutRegionCode] || localeData[language] || localeData.en

export default {language, messages}

测试

import intl from '../../../../src/components/loginPage/intl'

const language = 'en'
const languages = ['en', 'nl']
const localeData = {
    en: {'name': 'Username',
        'password': 'Password'},
    nl: {'name': 'Username2',
        'password': 'Password2'},
}

describe.only('Intl', () => {
    beforeEach(() => {
        window.navigator.language = language
        window.navigator.languages = languages
    })


    it('should return correct language', () => {
        console.log(intl.language)
    })
})

但是导航器语言在控制台中仍未定义。