[Findit] Fix bugs when pulling gtest result.

appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py

Index: appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py
diff --git a/appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py b/appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py
index 3fd7a92c03bd1ca70bade39213ce8d78d7abf1bc..a443586c397bd72f37b7e2ea3090acf033275aa6 100644
--- a/appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py
+++ b/appengine/findit/waterfall/test/process_base_swarming_task_result_pipeline_test.py
@@ -116,6 +116,10 @@ _SWARMING_TASK_RESULTS = {
         'state': 'COMPLETED',
         'exit_code': '2',  # Swarming task failed.
     },
+  'task_id4': {
+    'state': 'COMPLETED',
+    'exit_code': '1',
+  },
 }
 
 
@@ -296,6 +300,25 @@ class ProcessBaseSwarmingTaskResultPipelineTest(wf_testcase.WaterfallTestCase):
                 swarming_util.TASK_FAILED]
         })
 
+  def testMonitorSwarmingTaskWhereNoTaskOutputs(self):
+    task = WfSwarmingTask.Create(
+        self.master_name, self.builder_name,
+        self.build_number, self.step_name)
+    task.task_id = 'task_id4'
+    task.put()
+
+    pipeline = ProcessSwarmingTaskResultPipeline()
+    pipeline.run(
+        self.master_name, self.builder_name, self.build_number, self.step_name)
+
+    self.assertEqual(analysis_status.ERROR, task.status)
+    self.assertEqual(
+        task.error,
+        {
+            'code': swarming_util.NO_TASK_OUTPUTS,
+            'message': 'outputs_ref is None'
+        })
+
   def testProcessSwarmingTaskResultPipeline(self):
     # End to end test.
     self.mock(swarming_util, 'GetSwarmingTaskFailureLog',