boshek commented on code in PR #13183:
URL: https://github.com/apache/arrow/pull/13183#discussion_r876183537
##########
r/tests/testthat/test-csv.R:
##########
@@ -564,6 +564,29 @@ test_that("write_csv_arrow can write from
RecordBatchReader objects", {
expect_equal(nrow(tbl_in), 3)
})
+test_that("write_csv_arrow() compresses by file extension", {
+ skip_if_not_available("gzip")
+ tfgz <- tempfile(fileext = ".csv.gz")
+ tf <- tempfile(fileext = ".csv")
+ on.exit(unlink(tf))
+ on.exit(unlink(tfgz))
+
+ write_csv_arrow(tbl, tf)
+ write_csv_arrow(tbl, tfgz)
+ expect_lt(file.size(tfgz), file.size(tf))
+})
+
+test_that("read/write compressed file", {
Review Comment:
Oh good point no reason.
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