fix builds

Author: Takashi Matsuo

datalabeling/label_image_test.py

@@ -35,6 +35,7 @@ def dataset():
     # create a temporary dataset
     dataset = testing_lib.create_dataset(PROJECT_ID)
 
+    testing_lib.import_data(dataset.name, 'IMAGE', INPUT_GCS_URI)
     yield dataset
 
     # tear down

datalabeling/testing_lib.py

@@ -72,6 +72,8 @@ def delete_instruction(name):
 
 @backoff.on_exception(backoff.expo, DeadlineExceeded, max_time=RETRY_DEADLINE)
 def cancel_operation(name):
+    if not name:
+        return
     client = create_client()
     client.transport._operations_client.cancel_operation(name)