fix: assert step execution first in pipeline test (#2076)

* fix: assert step execution first in pipeline test

* use Dict.get

Co-authored-by: Rui Wang Napieralski <wru@amazon.com>

Author: icywang86rui

tests/integ/test_workflow.py

@@ -506,15 +506,17 @@ def test_training_job_with_debugger(
         except WaiterError:
             pass
         execution_steps = execution.list_steps()
-        training_job_arn = execution_steps[0]["Metadata"]["TrainingJob"]["Arn"]
-        job_description = sagemaker_session.sagemaker_client.describe_training_job(
-            TrainingJobName=training_job_arn.split("/")[1]
-        )
 
         assert len(execution_steps) == 1
+        assert execution_steps[0].get("FailureReason", "") == ""
         assert execution_steps[0]["StepName"] == "pytorch-train"
         assert execution_steps[0]["StepStatus"] == "Succeeded"
 
+        training_job_arn = execution_steps[0]["Metadata"]["TrainingJob"]["Arn"]
+        job_description = sagemaker_session.sagemaker_client.describe_training_job(
+            TrainingJobName=training_job_arn.split("/")[1]
+        )
+
         for index, rule in enumerate(rules):
             config = job_description["DebugRuleConfigurations"][index]
             assert config["RuleConfigurationName"] == rule.name