def METHOD_NAME(app):
    """Test full english date and tile filter."""
    datestring = format_date_filter('2018-06-06T09:29:55.947149+00:00')
    assert 'Wednesday, June 6, 2018, 11:29:55 AM' in datestring
    datestring = format_date_filter(
        '2018-06-06T09:29:55.947149+00:00', locale='fr')
    assert 'mercredi 6 juin 2018, 11:29:55' in datestring
    datestring = format_date_filter(
        '1950-01-01', date_format='short', time_format=None, locale='fr_CH')
    assert '01.01' in datestring