Revision 8b826abd0ee89b256c829a7fb0773c7cb2cc593c authored by Kent Yao on 31 July 2024, 15:57:21 UTC, committed by Dongjoon Hyun on 31 July 2024, 15:57:21 UTC
### What changes were proposed in this pull request?

Char/Varchar in JDBC `customSchema` option once broke in Spark 3.1 ~ 3.4, but seems to be restored in master by some recent works in the JDBC area, this PR add a test to cover.

See report in SPARK-44638

### Why are the changes needed?

test cov

### Does this PR introduce _any_ user-facing change?

no

### How was this patch tested?

test added

### Was this patch authored or co-authored using generative AI tooling?

no

Closes #47551 from yaooqinn/SPARK-44638.

Authored-by: Kent Yao <yao@apache.org>
Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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