ARROW-12400: [Rust] Re-enable tests in arrow::array::transform

[tustvold]

These tests were all commented out in #9329. Given the PR made changes to the commented out code, I'm inclined to think this was an accidental omission? If not, happy for this to be closed 😀

FYI @jorgecarleitao

Signed-off-by: Raphael Taylor-Davies r.taylordavies@googlemail.com

[alamb]

Thank you @tustvold

[jorgecarleitao]

Thanks a lot, @tustvold 👍

[github-actions]

https://issues.apache.org/jira/browse/ARROW-12400

[codecov-io]

Codecov Report

Merging #10048 (3d3f407) into master (26a5a04) will increase coverage by 0.24%.
The diff coverage is 100.00%.

@@ Coverage Diff @@## master #10048 +/- ##
==========================================
+ Coverage 78.70% 78.95% +0.24% 
==========================================
Files 286 286 Lines 64213 64664 +451 ==========================================
+ Hits 50538 51054 +516 + Misses 13675 13610 -65 

Impacted Files	Coverage Δ
rust/arrow/src/array/transform/mod.rs	93.20% <100.00%> (+22.96%)	⬆️
rust/parquet/src/encodings/encoding.rs	95.05% <0.00%> (+0.19%)	⬆️
rust/arrow/src/array/equal/mod.rs	93.58% <0.00%> (+0.34%)	⬆️
rust/arrow/src/array/data.rs	78.37% <0.00%> (+1.50%)	⬆️
rust/arrow/src/array/array_binary.rs	89.86% <0.00%> (+3.80%)	⬆️
rust/arrow/src/array/transform/variable_size.rs	100.00% <0.00%> (+12.12%)	⬆️
rust/arrow/src/array/transform/primitive.rs	100.00% <0.00%> (+28.57%)	⬆️
rust/arrow/src/array/transform/structure.rs	83.33% <0.00%> (+38.88%)	⬆️
rust/arrow/src/array/transform/null.rs	66.66% <0.00%> (+66.66%)	⬆️
... and 1 more

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[kszucs]

@andygrove I assume we'd like to have it in the release.

[alamb]

@andygrove I assume we'd like to have it in the release.

FWIW @kszucs I don't think this is something that we should hold the release for -- it does not have any change to the actual code, only the tests.

[kszucs]

Ok, thought that implementation was affected as well. I'm still waiting for other PRs so feel free to merge on green.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 78.95%. Comparing base (26a5a04) to head (3d3f407).

Additional details and impacted files

@@ Coverage Diff @@## master #10048 +/- ##
==========================================
+ Coverage 78.70% 78.95% +0.24% 
==========================================
Files 286 286 Lines 64213 64664 +451 ==========================================
+ Hits 50538 51054 +516 + Misses 13675 13610 -65 

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