nealrichardson commented on a change in pull request #9681:
URL: https://github.com/apache/arrow/pull/9681#discussion_r592809181
##########
File path: r/tests/testthat/test-dataset.R
##########
@@ -846,6 +846,38 @@ test_that("mutate() with NULL inputs", {
)
})
+test_that("empty mutate()", {
+ expect_equal(
+ ds %>%
+ mutate() %>%
+ collect(),
+ ds %>%
+ collect()
+ )
+})
+
+test_that("transmute() with NULL inputs", {
+ expect_equal(
+ ds %>%
+ transmute(int = NULL) %>%
+ collect(),
+ ds %>%
+ select() %>%
Review comment:
It's a fair point. My bigger concern is that I think they're asserting
wrong results because of ARROW-11328, so there's not much value at this time.
But it's fine.
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