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import datetime
import unittest
from unittest import mock

from airflow.models.dag import DAG
from airflow.providers.microsoft.azure.transfers.local_to_wasb import LocalFilesystemToWasbOperator


class TestLocalFilesystemToWasbOperator(unittest.TestCase):

    _config = {
        'file_path': 'file',
        'container_name': 'container',
        'blob_name': 'blob',
        'wasb_conn_id': 'wasb_default',
        'retries': 3,
    }

    def setUp(self):
        args = {'owner': 'airflow', 'start_date': datetime.datetime(2017, 1, 1)}
        self.dag = DAG('test_dag_id', default_args=args)

    def test_init(self):
        operator = LocalFilesystemToWasbOperator(task_id='wasb_operator_1', dag=self.dag, **self._config)
        assert operator.file_path == self._config['file_path']
        assert operator.container_name == self._config['container_name']
        assert operator.blob_name == self._config['blob_name']
        assert operator.wasb_conn_id == self._config['wasb_conn_id']
        assert operator.load_options == {}
        assert operator.retries == self._config['retries']

        operator = LocalFilesystemToWasbOperator(
            task_id='wasb_operator_2', dag=self.dag, load_options={'timeout': 2}, **self._config
        )
        assert operator.load_options == {'timeout': 2}

    @mock.patch('airflow.providers.microsoft.azure.transfers.local_to_wasb.WasbHook', autospec=True)
    def test_execute(self, mock_hook):
        mock_instance = mock_hook.return_value
        operator = LocalFilesystemToWasbOperator(
            task_id='wasb_sensor', dag=self.dag, load_options={'timeout': 2}, **self._config
        )
        operator.execute(None)
        mock_instance.load_file.assert_called_once_with('file', 'container', 'blob', timeout=2)
