paleolimbot commented on code in PR #12817:
URL: https://github.com/apache/arrow/pull/12817#discussion_r854022320
##########
r/tests/testthat/test-RecordBatch.R:
##########
@@ -688,3 +688,53 @@ test_that("RecordBatchReader to C-interface to
arrow_dplyr_query", {
# must clean up the pointer or we leak
delete_arrow_array_stream(stream_ptr)
})
+
+
+test_that("as_record_batch() works for RecordBatch", {
+ batch <- record_batch(col1 = 1L, col2 = "two")
+ expect_identical(as_record_batch(batch), batch)
+ expect_equal(
+ as_record_batch(batch, schema = schema(col1 = float64(), col2 = string())),
+ record_batch(col1 = Array$create(1, type = float64()), col2 = "two")
+ )
+})
+
+test_that("as_record_batch() works for Table", {
+ batch <- record_batch(col1 = 1L, col2 = "two")
+ table <- arrow_table(col1 = 1L, col2 = "two")
+
+ expect_equal(as_record_batch(table), batch)
+ expect_equal(
+ as_record_batch(table, schema = schema(col1 = float64(), col2 = string())),
+ record_batch(col1 = Array$create(1, type = float64()), col2 = "two")
+ )
+
+ # also check zero column table and make sure row count is preserved
+ table0 <- table[integer()]
+ expect_identical(table0$num_columns, 0L)
+ expect_identical(table0$num_rows, 1L)
+
+ batch0 <- as_record_batch(table0)
+ expect_identical(batch0$num_columns, 0L)
+ expect_identical(batch0$num_rows, 1L)
+})
+
+test_that("as_record_batch() works for data.frame()", {
+ batch <- record_batch(col1 = 1L, col2 = "two")
+ tbl <- tibble::tibble(col1 = 1L, col2 = "two")
+
+ # metadata prevents these from being equal
Review Comment:
(It turns out the metadata *was* equal...this must have been before I
updated the metadata bits)
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