def test_convert_type(self, value, schema_type, expected):
op = MySQLToGCSOperator(task_id=TASK_ID,
mysql_conn_id=MYSQL_CONN_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME)
self.assertEqual(op.convert_type(value, schema_type), expected)
def test_exec_success_json(self, gcs_hook_mock_class,
mysql_hook_mock_class):
"""Test successful run of execute function for JSON"""
op = MySQLToGCSOperator(task_id=TASK_ID,
mysql_conn_id=MYSQL_CONN_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME)
mysql_hook_mock = mysql_hook_mock_class.return_value
mysql_hook_mock.get_conn().cursor().__iter__.return_value = iter(ROWS)
mysql_hook_mock.get_conn().cursor().description = CURSOR_DESCRIPTION
gcs_hook_mock = gcs_hook_mock_class.return_value
def _assert_upload(bucket,
obj,
tmp_filename,
mime_type=None,
gzip=False):
self.assertEqual(BUCKET, bucket)
self.assertEqual(JSON_FILENAME.format(0), obj)
self.assertEqual('application/json', mime_type)
self.assertFalse(gzip)
with open(tmp_filename, 'rb') as file:
self.assertEqual(b''.join(NDJSON_LINES), file.read())
gcs_hook_mock.upload.side_effect = _assert_upload
op.execute(None)
mysql_hook_mock_class.assert_called_once_with(
mysql_conn_id=MYSQL_CONN_ID)
mysql_hook_mock.get_conn().cursor().execute.assert_called_once_with(
SQL)
def test_schema_file(self, gcs_hook_mock_class, mysql_hook_mock_class):
"""Test writing schema files."""
mysql_hook_mock = mysql_hook_mock_class.return_value
mysql_hook_mock.get_conn().cursor().__iter__.return_value = iter(ROWS)
mysql_hook_mock.get_conn().cursor().description = CURSOR_DESCRIPTION
gcs_hook_mock = gcs_hook_mock_class.return_value
def _assert_upload(bucket, obj, tmp_filename, mime_type, gzip): # pylint: disable=unused-argument
if obj == SCHEMA_FILENAME:
self.assertFalse(gzip)
with open(tmp_filename, 'rb') as file:
self.assertEqual(b''.join(SCHEMA_JSON), file.read())
gcs_hook_mock.upload.side_effect = _assert_upload
op = MySQLToGCSOperator(task_id=TASK_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME,
schema_filename=SCHEMA_FILENAME)
op.execute(None)
# once for the file and once for the schema
self.assertEqual(2, gcs_hook_mock.upload.call_count)
def test_file_splitting(self, gcs_hook_mock_class, mysql_hook_mock_class):
"""Test that ndjson is split by approx_max_file_size_bytes param."""
mysql_hook_mock = mysql_hook_mock_class.return_value
mysql_hook_mock.get_conn().cursor().__iter__.return_value = iter(ROWS)
mysql_hook_mock.get_conn().cursor().description = CURSOR_DESCRIPTION
gcs_hook_mock = gcs_hook_mock_class.return_value
expected_upload = {
JSON_FILENAME.format(0): b''.join(NDJSON_LINES[:2]),
JSON_FILENAME.format(1): NDJSON_LINES[2],
}
def _assert_upload(bucket,
obj,
tmp_filename,
mime_type=None,
gzip=False):
self.assertEqual(BUCKET, bucket)
self.assertEqual('application/json', mime_type)
self.assertFalse(gzip)
with open(tmp_filename, 'rb') as file:
self.assertEqual(expected_upload[obj], file.read())
gcs_hook_mock.upload.side_effect = _assert_upload
op = MySQLToGCSOperator(task_id=TASK_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME,
approx_max_file_size_bytes=len(
expected_upload[JSON_FILENAME.format(0)]))
op.execute(None)
def test_execute_with_query_error(self, mock_gcs_hook, mock_mysql_hook):
mock_mysql_hook.return_value.get_conn.\
return_value.cursor.return_value.execute.side_effect = ProgrammingError
op = MySQLToGCSOperator(task_id=TASK_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME,
schema_filename=SCHEMA_FILENAME)
with self.assertRaises(ProgrammingError):
op.execute(None)
def test_init(self):
"""Test MySqlToGoogleCloudStorageOperator instance is properly initialized."""
op = MySQLToGCSOperator(task_id=TASK_ID,
sql=SQL,
bucket=BUCKET,
filename=JSON_FILENAME,
export_format='CSV',
field_delimiter='|')
self.assertEqual(op.task_id, TASK_ID)
self.assertEqual(op.sql, SQL)
self.assertEqual(op.bucket, BUCKET)
self.assertEqual(op.filename, JSON_FILENAME)
self.assertEqual(op.export_format, 'csv')
self.assertEqual(op.field_delimiter, '|')
def test_exec_success_csv_with_delimiter(self, gcs_hook_mock_class,
mysql_hook_mock_class):
"""Test successful run of execute function for CSV with a field delimiter"""
op = MySQLToGCSOperator(task_id=TASK_ID,
mysql_conn_id=MYSQL_CONN_ID,
sql=SQL,
export_format='csv',
field_delimiter='|',
bucket=BUCKET,
filename=CSV_FILENAME)
mysql_hook_mock = mysql_hook_mock_class.return_value
mysql_hook_mock.get_conn().cursor().__iter__.return_value = iter(ROWS)
mysql_hook_mock.get_conn().cursor().description = CURSOR_DESCRIPTION
gcs_hook_mock = gcs_hook_mock_class.return_value
def _assert_upload(bucket,
obj,
tmp_filename,
mime_type=None,
gzip=False):
self.assertEqual(BUCKET, bucket)
self.assertEqual(CSV_FILENAME.format(0), obj)
self.assertEqual('text/csv', mime_type)
self.assertFalse(gzip)
with open(tmp_filename, 'rb') as file:
self.assertEqual(b''.join(CSV_LINES_PIPE_DELIMITED),
file.read())
gcs_hook_mock.upload.side_effect = _assert_upload
op.execute(None)
mysql_hook_mock_class.assert_called_once_with(
mysql_conn_id=MYSQL_CONN_ID)
mysql_hook_mock.get_conn().cursor().execute.assert_called_once_with(
SQL)