"""Test utils."""
from tempfile import TemporaryDirectory
import unittest.mock

from src import utils


@unittest.mock.patch.object(utils, 'boto3')
def test_download_s3_url(boto3_mock):
    """Test download_s3_url."""
    with TemporaryDirectory() as dir:
        result = utils.download_from_s3_url(
            bucket='abucket',
            key='some/path/filename.txt',
            dir=dir
        )
        assert result == dir + '/filename.txt'
        assert boto3_mock.client.called
        assert boto3_mock.client.return_value.download_file.call_args_list == [
            unittest.mock.call(
                'abucket', 'some/path/filename.txt', dir + '/filename.txt')]