SnowparkOperator: Add Session Cleanup Test Coverage#68775
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session when the user callable raises an exception. As part of enabling the new coverage, migrate the Snowpark tests away from the removed TaskInstance.run() API and update Snowpark test dependency detection to use the importable Snowpark module.
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Description
This change adds test coverage verifying that
SnowparkOperatorcloses the Snowpark session when the user callable raises an exception.The new test exercises the operator's exception path and validates that session cleanup still occurs when execution fails.
Rationale
SnowparkOperatorrelies on afinallyblock to guarantee session cleanup. Explicit coverage of this behavior helps protect against regressions that could leave Snowpark sessions open when user code raises an exception.Notes
While adding the new test, the Snowpark test suite was updated to use
dag_maker.run_ti()instead of the removedTaskInstance.run()API.The Snowpark operator, decorator and util test modules were also updated to use:
pytest.importorskip("snowflake.snowpark")which matches the importable Snowpark module used by the tests. Without this change, the entire test module was being skipped when run locally.
Backwards Compatibility
This change only affects test code and does not modify production behavior or public APIs.