🧪 Add tests for deidentify_write_stream in spark_streaming.py

[zrt219]

🎯 What: The testing gap in spark_streaming.py where deidentify_write_stream, the SparkDeidentifyStreamBuilder fluent builder, and write_deidentified_stream were entirely untested.

📊 Coverage: Mock-based testing was added to test:

• The deidentify_write_stream function returning the SparkDeidentifyStreamBuilder.
• Various options configured via the fluent API methods on SparkDeidentifyStreamBuilder.
• Execution pathways terminating in .start() and .sink().
• Different inputs triggering argument coercions in builder setup branches (like string vs list representations for column arguments).
• The top level execution helper write_deidentified_stream.

✨ Result: Test coverage improved across the file, bringing ~65 lines across the fluent builder under coverage and ensuring robust protection without the overhead of spinning up real mock Spark contexts.

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PR created automatically by Jules for task 9811911099087954334 started by @zrt219

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Project	Deployment	Actions	Updated (UTC)
zrt-bionemo	Ready	Preview, Comment	Jul 19, 2026 10:11am

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