[SPARK-45414][SQL][TESTS] Add regression tests for XML mixed type serialization #53857
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…ialization This adds two regression tests for SPARK-45414 to prevent reintroduction of the bug where string tag content was misplaced when writing XML with mixed column types (structs, arrays, and strings). Tests verify: - String columns between and after nested types write correctly - Attributes mixed with string elements serialize properly Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
JIRA Issue Information=== Bug SPARK-45414 === This comment was automatically generated by GitHub Actions |
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This adds two regression tests for SPARK-45414 to prevent reintroduction of the bug where string tag content was misplaced when writing XML with mixed column types (structs, arrays, and strings).
Tests verify:
What changes were proposed in this pull request?
Add two regression tests for SPARK-45414 to prevent reintroduction of the bug where string tag content could be misplaced when writing XML with mixed column types.
Why are the changes needed?
SPARK-45414 reported a bug in the spark-xml library where string content was misplaced when writing structs with mixed types. While this bug was fixed during spark-xml integration into Spark core, there were no tests ensuring this specific scenario remains correct. These tests provide coverage for the bug scenario.
Does this PR introduce any user-facing change?
No, this only adds test coverage.
How was this patch tested?
The new tests were run successfully:
Was this patch authored or co-authored using generative AI tooling?
Yes, co-authored with Claude Sonnet 4.5.
Generated-by: Claude Sonnet 4.5