eitsupi commented on code in PR #35667:
URL: https://github.com/apache/arrow/pull/35667#discussion_r1211733586
##########
r/tests/testthat/test-dplyr-filter.R:
##########
@@ -425,3 +425,34 @@ test_that("filter() with across()", {
tbl
)
})
+
+test_that(".by argument", {
+ compare_dplyr_binding(
+ .input %>%
+ filter(is.na(lgl), .by = chr) %>%
+ select(chr, int, lgl) %>%
+ collect(),
+ tbl
+ )
+ compare_dplyr_binding(
+ .input %>%
+ filter(.by = chr) %>%
+ select(chr, int, lgl) %>%
+ collect(),
+ tbl
+ )
+ compare_dplyr_binding(
+ .input %>%
+ filter(int > 2, pnorm(dbl) > .99, .by = chr) %>%
+ collect(),
+ tbl,
+ warning = "Expression pnorm\\(dbl\\) > 0.99 not supported in Arrow;
pulling data into R"
+ )
Review Comment:
This is an intentional test to ensure that no grouping occurs during
conversion to data.frame.
Added a comment.
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