GH-35949: [R] CSV File reader options class objects should print the selected values

[thisisnic]

Fixes #35949

• Closes: [R] CSV File reader options class objects should print the selected values #35949

[thisisnic]

I started on this as it'd be useful for some debugging I'm doing, though I wonder if there's a more efficient way of doing this than copying the code for each attribute. Perhaps not?

[paleolimbot]

Seems like a good idea to me! This will almost certainly save you or somebody else some time in the future.

[paleolimbot]

Awesome! Just one more test and it's good to go!

[paleolimbot]

One more test here for the data access part (as opposed to the printing part)? Like:

test_that("CSV options field access", {
  options <- CsvReadOptions$create(skip_rows = 102)
  expect_identical(options$skip_rows, 102)
  # ... for all the options we just added the ability to access
})

...for each option we added a

[thisisnic]

Added

[paleolimbot]

Thanks! I made a ticket for the CI failure, which seems to affect every debian/testing-based job: #36030

[ursabot]

Benchmark runs are scheduled for baseline = 7887605 and contender = fe60932. fe60932 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0% ⚠️ Contender and baseline run contexts do not match] ec2-t3-xlarge-us-east-2
[Finished ⬇️0.74% ⬆️0.03%] test-mac-arm
[Finished ⬇️0.65% ⬆️0.0% ⚠️ Contender and baseline run contexts do not match] ursa-i9-9960x
[Finished ⬇️3.01% ⬆️0.3% ⚠️ Contender and baseline run contexts do not match] ursa-thinkcentre-m75q
Buildkite builds:
[Finished] fe609322 ec2-t3-xlarge-us-east-2
[Finished] fe609322 test-mac-arm
[Finished] fe609322 ursa-i9-9960x
[Finished] fe609322 ursa-thinkcentre-m75q
[Finished] 78876057 ec2-t3-xlarge-us-east-2
[Finished] 78876057 test-mac-arm
[Finished] 78876057 ursa-i9-9960x
[Finished] 78876057 ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java