i18n.js

'use strict';

require('should');
var hbs = require('handlebars');
var helpers = require('..');
helpers.i18n({handlebars: hbs});

var context = {language: 'en', en: {key: 'value', a: {b: 'c'}}, fr: {key: 'valeur'}};

describe('i18n', function() {
  it('should throw an error when key is not a string.', function() {
    (function() {
      hbs.compile('{{#i18n}}{{/i18n}}')();
    }).should.throw('{{i18n}} helper expected "key" to be a string');
  });

  it('should throw an error when language parameter is not a string.', function() {
    (function() {
      hbs.compile('{{#i18n "key"}}{{/i18n}}')();
    }).should.throw('{{i18n}} helper expected "language" parameter to be a string');
  });

  it('should throw an error when the language is not found.', function() {
    (function() {
      var ctx = {language: 'foo', en: {key: 'value'}, fr: {key: 'valeur'}};
      hbs.compile('{{#i18n "key"}}{{/i18n}}')(ctx);
    }).should.throw('{{i18n}} helper cannot find language "foo"');
  });
  
  it('should throw an error when a key is not found.', function() {
    (function() {
      var ctx = {language: 'en', en: {key: 'value'}, fr: {key: 'valeur'}};
      hbs.compile('{{#i18n "foo"}}{{/i18n}}')(ctx);
    }).should.throw('{{i18n}} helper cannot find property "foo" for language "en"');
  });
  
  it('should take a key and return for the default language', function() {
    var fn = hbs.compile('{{#i18n "key"}}{{/i18n}}');
    fn(context).should.equal('value');
  });
  
  it('should use options passed on the context', function() {
    var fn = hbs.compile('{{#i18n "key"}}{{/i18n}}');
    var context = {en: {key: 'value'}, fr: {key: 'valeur'}};
    context.options = {language: 'en'};
    fn(context).should.equal('value');
  });
  
  it('should take a key and return for the override language', function() {
    var fn = hbs.compile('{{#i18n "key" language="fr"}}{{/i18n}}');
    fn(context).should.equal('valeur');
  });

  it('should support using dot notation for the key', function() {
    var fn = hbs.compile('{{#i18n "a.b"}}{{/i18n}}');
    fn(context).should.equal('c');
  });
});