[GitHub] [beam] Abacn opened a new issue, #22109: [Bug]: Bigquery exception handling unit tests invoke real credential

[GitBox <gi...@apache.org>]

Abacn opened a new issue, #22109:
URL: https://github.com/apache/beam/issues/22109

   ### What happened?
   
   Running bigquery unit test locally (est_create_temp_dataset_exception, test_query_job_exception, test_read_export_exception, test_copy_load_job_exception, test_load_job_exception) surprisingly pops up google cloud authentication page in web browser. 
   Taking a close look, the test uses real gcp_client and querying for default project. If the command line environment does not have a gcloud auth configured, it will popup a webpage asking login into google account. Closing this page, the test get stuck and the webpage gets popup again after some time, likely running into a retry logic.
   
   The unit test should neither depend on nor validate real credential.
   
   ```
   apache_beam/io/iobase.py:1638: in split
       for source_bundle in source_bundles:
   apache_beam/io/gcp/bigquery.py:830: in split
       bq = bigquery_tools.BigQueryWrapper(
   apache_beam/io/gcp/bigquery_tools.py:336: in __init__
       self.gcp_bq_client = client or gcp_bigquery.Client(
   ../../../dev/virtualenv/py38beam/lib/python3.8/site-packages/google/cloud/bigquery/client.py:231: in __init__
       super(Client, self).__init__(
   ../../../dev/virtualenv/py38beam/lib/python3.8/site-packages/google/cloud/client.py:318: in __init__
   ```
   
   ### Issue Priority
   
   Priority: 2
   
   ### Issue Component
   
   Component: io-py-gcp


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