"""Tests for the translations module."""
from unittest.mock import MagicMock

import pytest

from notifications_delivery.utils.translations import get_translations


@pytest.mark.parametrize(
    'translations_mock, locale, expected_value',
    (
        # check translations been loaded successfully
        (MagicMock(return_value='TRANSLATION'), 'de', 'TRANSLATION'),
        # check null translations for default locale
        (MagicMock(return_value='TRANSLATION'), 'en', 'NULL_TRANSLATION'),
        # check fallback for unknown locale
        (MagicMock(side_effect=FileNotFoundError), 'unknown_locale', 'NULL_TRANSLATION'),
    )
)
def test_translations(translations_mock, locale, expected_value, mocker):
    """Test translations."""
    mocker.patch(
        'notifications_delivery.utils.translations.gettext.translation',
        translations_mock
    )
    mocker.patch(
        'notifications_delivery.utils.translations.gettext.NullTranslations',
        MagicMock(return_value='NULL_TRANSLATION')
    )
    translations = get_translations(locale=locale)
    assert translations == expected_value