decide.nolog.cz/tests/integration/translations-test.js

import { moduleFor, test } from 'ember-qunit';
import config from 'croodle/config/environment';
import LocaleHelper from 'ember-i18n/utils/locale';

moduleFor('service:i18n', 'Integration | translations', {
  integration: true
});

// Replace this with your real tests.
test('configuration is correct', function(assert) {
  const i18n = this.subject();
  const locales = i18n.get('locales');
  const { defaultLocale } = config.i18n;

  assert.ok(defaultLocale, 'default locale is set');
  assert.ok(locales, 'there are locales');
  assert.ok(locales.indexOf(defaultLocale) !== -1, 'default locale is part of locales');
});

test('all locales have same amount of translation strings as default locale', function(assert) {
  const i18n = this.subject();
  const locales = i18n.get('locales');
  const { defaultLocale } = config.i18n;
  const { translations: defaultTranslations } = new LocaleHelper(defaultLocale, i18n.get('container'));

  assert.expect((locales.length - 1) * 2);

  locales.map((locale) => {
    if (locale === defaultLocale) {
      return;
    }
    const { translations } = new LocaleHelper(locale, i18n.get('container'));
    assert.ok(translations, `could retrive locale ${locale}`);
    assert.equal(
      Object.keys(translations).length,
      Object.keys(defaultTranslations).length,
      `correct amount of translations for locale ${locale}`
    );
  });
});

test('all locales have same translation strings as default locale', function(assert) {
  const i18n = this.subject();
  const locales = i18n.get('locales');
  const { defaultLocale } = config.i18n;
  const { translations: defaultTranslations } = new LocaleHelper(defaultLocale, i18n.get('container'));

  assert.expect(
    // count of non default locales * translation strings of default locale
    (locales.length - 1) * Object.keys(defaultTranslations).length
  );

  Object.keys(defaultTranslations).map((translationString) => {
    locales.map((locale) => {
      if (locale === defaultLocale) {
        return;
      }

      i18n.set('locale', locale);
      assert.ok(
        i18n.exists(translationString),
        `translation for ${translationString} exists in locale ${locale}`
      );
    });
  });
});