feluelle commented on a change in pull request #6180: [AIRFLOW-5549] Extended 
BQ GetDataOperator to handle query params
URL: https://github.com/apache/airflow/pull/6180#discussion_r329078685
 
 

 ##########
 File path: tests/gcp/hooks/test_bigquery.py
 ##########
 @@ -460,6 +460,49 @@ def test_insert_all_fail(self):
             cursor.insert_all(project_id, dataset_id, table_id,
                               rows, fail_on_error=True)
 
+    def test_get_data(self):
+        expected_result = {
+            "kind": "bigquery#tableDataList",
+            "etag": "QB24gaarZFqaiu5jRyPiA==",
+            "totalRows": "30",
+            "pageToken": "BHSHJT3DRAFSSIAICAFCACSB77777777757SUAA=",
+            "rows": [
+                {
+                    "f": [
+                        {
+                            "v": "219067803"
+                        },
+                        {
+                            "v": "10000"
+                        },
+                        {
+                            "v": "2019-01-09"
+                        },
+                        {
+                            "v": "2019-01-11"
+                        },
+                        {
+                            "v": "1565783983.395962"
+                        }
+                    ]
+                }
+            ]
+        }
+
+        project_id = 'your-project'
+        dataset_id = 'your_dataset'
+        table_id = 'table'
+
+        mock_service = mock.Mock()
+        with mock.patch.object(hook.BigQueryBaseCursor(mock_service, 
project_id).service,
+                               'tabledata') as MockService:
+            MockService.return_value.list(
 
 Review comment:
   Do you really want to call the mock `(...)`? Or do you need just the return 
value (`.return_value`)?
   ```suggestion
               MockService.return_value.list.return_value.execute.return_value 
= expected_result
   ```
   In your current test you won't see the difference because you don't check 
for calls of mocks.
   I am always in favor of checking the mock calls of the objects you use for 
example via `assert_called_once_with()`.
   See the [docs](https://docs.python.org/3/library/unittest.mock.html) for 
more information.

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