vincbeck commented on code in PR #28052:
URL: https://github.com/apache/airflow/pull/28052#discussion_r1039744012


##########
tests/providers/amazon/aws/operators/test_emr_add_steps.py:
##########
@@ -207,3 +207,22 @@ def test_init_with_nonexistent_cluster_name(self):
             with pytest.raises(AirflowException) as ctx:
                 operator.execute(self.mock_context)
             assert str(ctx.value) == f"No cluster found for name: 
{cluster_name}"
+
+    def test_wait_for_completion(self):
+        def check_wait_for_completion(**kwargs):
+            return kwargs.get("wait_for_completion")
+
+        wait_for_completion = False
+        with patch(
+            "airflow.providers.amazon.aws.hooks.emr.EmrHook.add_job_flow_steps"
+        ) as mock_add_job_flow_steps:
+            mock_add_job_flow_steps.side_effect = check_wait_for_completion
+            operator = EmrAddStepsOperator(
+                task_id="test_task",
+                job_flow_id="j-8989898989",
+                aws_conn_id="aws_default",
+                dag=DAG("test_dag_id", default_args=self.args),
+                wait_for_completion=wait_for_completion,
+            )
+
+            assert operator.execute(self.mock_context) == wait_for_completion

Review Comment:
   I m not sure about your unit test, I hardly understand the logic. Here is 
how I'd write it:
   
   ```suggestion
       @mock.patch.object(EmrHook, "add_job_flow_steps")
       def test_wait_for_completion(self, mock_add_job_flow_steps):
           job_flow_id = "j-8989898989"
           operator = EmrAddStepsOperator(
               task_id="test_task",
               job_flow_id=job_flow_id,
               aws_conn_id="aws_default",
               dag=DAG("test_dag_id", default_args=self.args),
               wait_for_completion=False,
           )
   
           mock_add_job_flow_steps.assert_called_once_with(
               job_flow_id=job_flow_id,
               steps=[],
               wait_for_completion=False,
           )
   ```



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