tests/testthat/test-dplyr-union.R

In arrow: Integration to 'Apache' 'Arrow'

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#
#   http://www.apache.org/licenses/LICENSE-2.0
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library(dplyr, warn.conflicts = FALSE)

skip_if_not_available("acero")

withr::local_options(list(arrow.summarise.sort = FALSE))

test_that("union_all", {
  compare_dplyr_binding(
    .input %>%
      union_all(example_data) %>%
      collect(),
    example_data
  )

  test_table <- arrow_table(x = 1:10)

  # Union with empty table produces same dataset
  expect_equal(
    test_table %>%
      union_all(test_table$Slice(0, 0)) %>%
      compute(),
    test_table
  )

  expect_error(
    test_table %>%
      union_all(arrow_table(y = 1:10)) %>%
      collect(),
    regex = "input schemas must all match"
  )
})

test_that("union", {
  compare_dplyr_binding(
    .input %>%
      dplyr::union(example_data) %>%
      collect(),
    example_data
  )

  test_table <- arrow_table(x = 1:10)

  # Union with empty table produces same dataset
  expect_equal(
    test_table %>%
      dplyr::union(test_table$Slice(0, 0)) %>%
      compute(),
    test_table
  )

  expect_error(
    test_table %>%
      dplyr::union(arrow_table(y = 1:10)) %>%
      collect(),
    regex = "input schemas must all match"
  )
})