nealrichardson commented on a change in pull request #11315:
URL: https://github.com/apache/arrow/pull/11315#discussion_r728443497
##########
File path: r/tests/testthat/test-parquet.R
##########
@@ -104,6 +104,12 @@ test_that("write_parquet() accepts RecordBatch too", {
expect_equal(tab, Table$create(batch))
})
+test_that("write_parquet() handles grouped_df", {
+ library(dplyr, warn.conflicts = FALSE)
+ df <- tibble::tibble(a = 1:4, b = 5) %>% group_by(b)
+ expect_parquet_roundtrip(df, as_data_frame = TRUE)
Review comment:
```suggestion
# Since `df` is a "grouped_df", this test asserts that we get a grouped_df
back
expect_parquet_roundtrip(df, as_data_frame = TRUE)
```
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