nealrichardson commented on a change in pull request #11315:
URL: https://github.com/apache/arrow/pull/11315#discussion_r728406029
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File path: r/tests/testthat/test-parquet.R
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@@ -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:
It does, it calls `expect_equal(parquet_roundtrip(tab, ...), tab)` in
the end, so we're asserting we get a `grouped_df` because that's what `df` is.
FWIW this was the failing test I started with to reproduce the user's report.
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