tests/testthat/test-bridge.R

In arrow: Integration to 'Apache' 'Arrow'

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test_that("Pointer wrapper accepts external pointers", {
  ptr <- allocate_arrow_schema()
  exportable <- int32()
  exportable$export_to_c(ptr)

  # make sure exportable is released and deleted
  expect_equal(DataType$import_from_c(ptr), int32())
  delete_arrow_schema(ptr)
})

test_that("Pointer wrapper accepts double-casted pointers", {
  ptr <- allocate_arrow_schema()
  exportable <- int32()
  exportable$export_to_c(external_pointer_addr_double(ptr))

  # make sure exportable is released and deleted
  expect_equal(DataType$import_from_c(external_pointer_addr_double(ptr)), int32())
  delete_arrow_schema(ptr)
})

test_that("Pointer wrapper accepts integer64-casted pointers", {
  ptr <- allocate_arrow_schema()
  exportable <- int32()
  exportable$export_to_c(external_pointer_addr_integer64(ptr))

  # make sure exportable is released and deleted
  expect_equal(DataType$import_from_c(external_pointer_addr_integer64(ptr)), int32())
  delete_arrow_schema(ptr)
})

test_that("Pointer wrapper accepts raw representation of pointers", {
  ptr <- allocate_arrow_schema()
  exportable <- int32()
  exportable$export_to_c(external_pointer_addr_raw(ptr))

  # make sure exportable is released and deleted
  expect_equal(DataType$import_from_c(external_pointer_addr_raw(ptr)), int32())
  delete_arrow_schema(ptr)
})

test_that("Pointer wrapper accepts character representation of pointers", {
  ptr <- allocate_arrow_schema()
  exportable <- int32()
  exportable$export_to_c(external_pointer_addr_character(ptr))

  # make sure exportable is released and deleted
  expect_equal(DataType$import_from_c(external_pointer_addr_character(ptr)), int32())
  delete_arrow_schema(ptr)
})

test_that("Pointer wrapper errors for unknown object", {
  expect_error(
    DataType$import_from_c(integer()),
    "Can't convert input object to pointer"
  )

  expect_error(
    DataType$import_from_c(NA_character_),
    "Can't convert NA_character_ to pointer"
  )

  expect_error(
    DataType$import_from_c("this is not an integer"),
    "Can't parse 'this is not an integer'"
  )
})