[SPARK-54218][PYTHON][SQL][TESTS] Add integrated tests for Scalar Pandas Iterator UDF #52916
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What changes were proposed in this pull request?
Add integrated tests for Scalar Pandas Iterator UDF
Why are the changes needed?
to improve test coverage
Many UDF types are only tested in python side, and are missing in the SQL side. So
if the results (tested in python) are the same but the plan was unintentionally changed, we will not be aware of such change.
This PR adds SQL_SCALAR_PANDAS_ITER_UDF
Does this PR introduce any user-facing change?
no, test-only
How was this patch tested?
ci
Was this patch authored or co-authored using generative AI tooling?
no