jonkeane commented on code in PR #49713:
URL: https://github.com/apache/arrow/pull/49713#discussion_r3068867710
##########
r/tests/testthat/test-duckdb.R:
##########
@@ -190,6 +190,18 @@ test_that("to_arrow roundtrip, with dataset (without
wrapping)", {
expect_r6_class(out, "RecordBatchReader")
})
+test_that("to_arrow preserves grouping from duckdb tables", {
+ ds <- InMemoryDataset$create(example_data)
+
+ out <- ds |>
+ to_duckdb() |>
+ group_by(lgl) |>
+ to_arrow()
+
+ expect_s3_class(out, "arrow_dplyr_query")
+ expect_equal(dplyr::group_vars(out), "lgl")
+})
Review Comment:
I trust this fails before the changes in duckdb.R?
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