[GitHub] [airflow] nuclearpinguin commented on a change in pull request #6670: [AIRFLOW-4816]MySqlToS3Operator

[GitBox <gi...@apache.org>]

nuclearpinguin commented on a change in pull request #6670: [AIRFLOW-4816]MySqlToS3Operator
URL: https://github.com/apache/airflow/pull/6670#discussion_r389244322
 
 

 ##########
 File path: tests/providers/amazon/aws/operators/test_mysql_to_s3.py
 ##########
 @@ -0,0 +1,61 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+import unittest
+from unittest import mock
+
+import pandas as pd
+
+from airflow.operators.mysql_to_s3_operator import MySQLToS3Operator
+
+
+class TestMySqlToS3Operator(unittest.TestCase):
+
+    @mock.patch("airflow.operators.mysql_to_s3_operator.tempfile.NamedTemporaryFile")
+    @mock.patch("airflow.operators.mysql_to_s3_operator.S3Hook")
+    @mock.patch("airflow.operators.mysql_to_s3_operator.MySqlHook")
+    def test_execute(self, mock_mysql_hook, mock_s3_hook, temp_mock):
+        query = "query"
+        s3_bucket = "bucket"
+        s3_key = "key"
+
+        test_df = pd.DataFrame({'a': '1', 'b': '2'}, index=[0, 1])
+        get_pandas_df_mock = mock_mysql_hook.return_value.get_pandas_df
+        get_pandas_df_mock.return_value = test_df
+
+        op = MySQLToS3Operator(query=query,
+                               s3_bucket=s3_bucket,
+                               s3_key=s3_key,
+                               mysql_conn_id="mysql_conn_id",
+                               aws_conn_id="aws_conn_id",
+                               task_id="task_id",
+                               header=False,
+                               index=False,
+                               dag=None
+                               )
+        op.execute(None)
+        mock_mysql_hook.assert_called_once_with(mysql_conn_id="mysql_conn_id")
+        mock_s3_hook.assert_called_once_with(aws_conn_id="aws_conn_id", verify=None)
+
+        get_pandas_df_mock.assert_called_once_with(query)
+
+        temp_mock.assert_called_once_with(mode='r+', suffix=".csv")
+        temp_mock.return_value.__enter__.return_value.name = "file"
+        mock_s3_hook.return_value.load_file.assert_called_once_with(filename=temp_mock.__enter__.name,
 
 Review comment:
   ```suggestion
           filename = "file"
           temp_mock.return_value.__enter__.return_value.name = filename
           mock_s3_hook.return_value.load_file.assert_called_once_with(filename=filename,
   ```

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