motion
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motion - moving development forward
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JavaScript
/* global describe, it, after, beforeEach */
var expect = require('chai').expect
var fs = require('fs')
var rimraf = require('rimraf')
var y18n = require('../')
require('chai').should()
describe('y18n', function () {
describe('configure', function () {
it('allows you to override the default y18n configuration', function () {
var y = y18n({locale: 'fr'})
y.locale.should.equal('fr')
})
})
describe('_readLocaleFile', function () {
it('throws a helpful error if language file has invalid syntax', function () {
expect(function () {
var __ = y18n({
locale: 'bad-locale',
directory: __dirname + '/locales'
}).__
__('Hello')
}).to.throw(/syntax error/)
})
})
describe('__', function () {
it('uses replacements from the default locale if none is configured', function () {
var __ = y18n({
directory: __dirname + '/locales'
}).__
__('Hello').should.equal('Hello!')
})
it('uses replacements from the configured locale', function () {
var __ = y18n({
locale: 'pirate',
directory: __dirname + '/locales'
}).__
__('Hello').should.equal('Avast ye mateys!')
})
it('uses language file if language_territory file does not exist', function () {
var __ = y18n({
locale: 'pirate_JM',
directory: __dirname + '/locales'
}).__
__('Hello').should.equal('Avast ye mateys!')
})
it('does not fallback to language file if fallbackToLanguage is false', function () {
var __ = y18n({
locale: 'pirate_JM',
fallbackToLanguage: false,
updateFiles: false,
directory: __dirname + '/locales'
}).__
__('Hello').should.equal('Hello')
})
it('uses strings as given if no matching locale files found', function () {
var __ = y18n({
locale: 'zz_ZZ',
updateFiles: false,
directory: __dirname + '/locales'
}).__
__('Hello').should.equal('Hello')
})
it('expands arguments into %s placeholders', function () {
var __ = y18n({
directory: __dirname + '/locales'
}).__
__('Hello %s %s', 'Ben', 'Coe').should.equal('Hello Ben Coe')
})
describe('the first time observing a word', function () {
beforeEach(function (done) {
rimraf('./test/locales/fr*.json', function () {
return done()
})
})
it('returns the word immediately', function () {
var __ = y18n({
locale: 'fr',
directory: __dirname + '/locales'
}).__
__('banana').should.equal('banana')
})
it('writes new word to locale file if updateFiles is true', function (done) {
var __ = y18n({
locale: 'fr_FR',
directory: __dirname + '/locales'
}).__
__('banana', function (err) {
var locale = JSON.parse(fs.readFileSync('./test/locales/fr_FR.json', 'utf-8'))
locale.banana.should.equal('banana')
return done(err)
})
})
it('writes new word to language file if language_territory file does not exist', function (done) {
fs.writeFileSync('./test/locales/fr.json', '{"meow": "le meow"}', 'utf-8')
var __ = y18n({
locale: 'fr_FR',
directory: __dirname + '/locales'
}).__
__('meow').should.equal('le meow')
__('banana', function (err) {
var locale = JSON.parse(fs.readFileSync('./test/locales/fr.json', 'utf-8'))
locale.banana.should.equal('banana')
return done(err)
})
})
it('writes word to missing locale file, if no fallback takes place', function (done) {
fs.writeFileSync('./test/locales/fr.json', '{"meow": "le meow"}', 'utf-8')
var __ = y18n({
locale: 'fr_FR',
fallbackToLanguage: false,
directory: __dirname + '/locales'
}).__
__('banana', function (err) {
// 'banana' should be written to fr_FR.json
var locale = JSON.parse(fs.readFileSync('./test/locales/fr_FR.json', 'utf-8'))
locale.should.deep.equal({
banana: 'banana'
})
// fr.json should remain untouched
var frJson = JSON.parse(fs.readFileSync('./test/locales/fr.json', 'utf-8'))
frJson.should.deep.equal({
meow: 'le meow'
})
return done(err)
})
})
it('handles enqueuing multiple writes at the same time', function (done) {
var __ = y18n({
locale: 'fr',
directory: __dirname + '/locales'
}).__
__('apple')
__('banana', function () {
__('foo')
__('bar', function (err) {
var locale = JSON.parse(fs.readFileSync('./test/locales/fr.json', 'utf-8'))
locale.apple.should.equal('apple')
locale.banana.should.equal('banana')
locale.foo.should.equal('foo')
locale.bar.should.equal('bar')
return done(err)
})
})
})
it('does not write the locale file if updateFiles is false', function (done) {
var __ = y18n({
locale: 'fr',
updateFiles: false,
directory: __dirname + '/locales'
}).__
__('banana', function (err) {
fs.existsSync('./test/locales/fr.json').should.equal(false)
return done(err)
})
})
})
})
describe('__n', function () {
it('uses the singular form if quantity is 1', function () {
var __n = y18n({
directory: __dirname + '/locales'
}).__n
__n('%d cat', '%d cats', 1).should.equal('1 cat')
})
it('uses the plural form if quantity is greater than 1', function () {
var __n = y18n({
directory: __dirname + '/locales'
}).__n
__n('%d cat', '%d cats', 2).should.equal('2 cats')
})
it('allows additional arguments to be printed', function () {
var __n = y18n({
directory: __dirname + '/locales'
}).__n
__n('%d %s cat', '%d %s cats', 2, 'black').should.equal('2 black cats')
})
it('allows an alternative locale to be set', function () {
var __n = y18n({
locale: 'pirate',
directory: __dirname + '/locales'
}).__n
__n('%d cat', '%d cats', 1).should.equal('1 land catfish')
__n('%d cat', '%d cats', 3).should.equal('3 land catfishes')
})
// See: https://github.com/bcoe/yargs/pull/210
it('allows a quantity placeholder to be provided in the plural but not singular form', function () {
var __n = y18n({
directory: __dirname + '/locales'
}).__n
var singular = __n('There is one monkey in the %s', 'There are %d monkeys in the %s', 1, 'tree')
var plural = __n('There is one monkey in the %s', 'There are %d monkeys in the %s', 3, 'tree')
singular.should.equal('There is one monkey in the tree')
plural.should.equal('There are 3 monkeys in the tree')
})
describe('the first time observing a pluralization', function () {
beforeEach(function (done) {
rimraf('./test/locales/fr.json', function () {
return done()
})
})
it('returns the pluralization immediately', function () {
var __n = y18n({
locale: 'fr',
directory: __dirname + '/locales'
}).__n
__n('%d le cat', '%d le cats', 1).should.equal('1 le cat')
})
it('writes to the locale file if updateFiles is true', function (done) {
var __n = y18n({
locale: 'fr',
directory: __dirname + '/locales'
}).__n
__n('%d apple %s', '%d apples %s', 2, 'dude', function (err) {
var locale = JSON.parse(fs.readFileSync('./test/locales/fr.json', 'utf-8'))
locale['%d apple %s'].one.should.equal('%d apple %s')
locale['%d apple %s'].other.should.equal('%d apples %s')
return done(err)
})
})
it('does not write the locale file if updateFiles is false', function (done) {
var __n = y18n({
locale: 'fr',
updateFiles: false,
directory: __dirname + '/locales'
}).__n
__n('%d apple %s', '%d apples %s', 2, 'dude', function (err) {
fs.existsSync('./test/locales/fr.json').should.equal(false)
return done(err)
})
})
})
})
describe('setLocale', function () {
it('switches the locale', function () {
var i18n = y18n({
directory: __dirname + '/locales'
})
i18n.__('Hello').should.equal('Hello!')
i18n.setLocale('pirate')
i18n.__('Hello').should.equal('Avast ye mateys!')
})
})
describe('updateLocale', function () {
beforeEach(function (done) {
rimraf('./test/locales/fr.json', function () {
return done()
})
})
it('updates the locale with the new lookups provided', function () {
var i18n = y18n({
locale: 'fr',
directory: __dirname + '/locales'
})
i18n.updateLocale({
foo: 'le bar'
})
i18n.__('foo').should.equal('le bar')
})
it('loads the locale from disk prior to updating the map', function () {
fs.writeFileSync('./test/locales/fr.json', '{"meow": "le meow"}', 'utf-8')
var i18n = y18n({
locale: 'fr',
directory: __dirname + '/locales'
})
i18n.updateLocale({
foo: 'le bar'
})
i18n.__('meow').should.equal('le meow')
})
})
describe('getLocale', function () {
it('returns the configured locale', function () {
y18n().getLocale().should.equal('en')
})
})
after(function () {
rimraf.sync('./test/locales/fr.json')
})
})