Nothing
mtcars_tibble <- tibble::as_tibble(mtcars)
mtcars_datatable <- data.table::as.data.table(mtcars)
test_that("Set object class", {
mtcars_tibble <- tibble::as_tibble(mtcars)
mtcars_datatable <- data.table::as.data.table(mtcars)
expect_true(inherits(set_class(mtcars), "data.frame"))
expect_true(inherits(set_class(mtcars_tibble), "data.frame"))
expect_true(inherits(set_class(mtcars_datatable), "data.frame"))
expect_true(inherits(set_class(mtcars, class = "fakeclass"), "data.frame"))
expect_true(!"fakeclass" %in% class(set_class(mtcars, class = "fakeclass")))
})
test_that("Set object class as tibble", {
mtcars_tibble <- tibble::as_tibble(mtcars)
mtcars_datatable <- data.table::as.data.table(mtcars)
expect_true(inherits(set_class(mtcars, class = "tbl_df"), "tbl_df"))
expect_true(inherits(set_class(mtcars, class = "tibble"), "tbl_df"))
expect_true(inherits(set_class(mtcars_tibble, class = "tibble"), "tbl_df"))
})
test_that("Set object class as data.table", {
expect_true(inherits(set_class(mtcars, class = "data.table"), "data.table"))
withr::with_tempfile("data_file", fileext = ".csv", code = {
export(mtcars, data_file)
expect_true(inherits(import(data_file, setclass = "data.table"), "data.table"))
expect_true(inherits(import(data_file, data.table = TRUE, setclass = "data.table"), "data.table"))
})
})
test_that("Set object class as arrow table", {
skip_if(getRversion() <= "4.2")
skip_if_not_installed("arrow")
mtcars_arrow <- arrow::arrow_table(mtcars)
expect_false(inherits(set_class(mtcars_arrow), "data.frame")) ## arrow table is not data.frame
expect_true(inherits(set_class(mtcars, class = "arrow"), "ArrowTabular"))
expect_true(inherits(set_class(mtcars, class = "arrow_table"), "ArrowTabular"))
withr::with_tempfile("data_file", fileext = ".csv", code = {
export(mtcars, data_file)
expect_true(inherits(import(data_file, setclass = "arrow"), "ArrowTabular"))
expect_true(inherits(import(data_file, data.table = TRUE, setclass = "arrow"), "ArrowTabular"))
})
})
test_that("ArrowTabular can be exported", {
skip_if(getRversion() <= "4.2")
skip_if_not_installed("arrow")
mtcars_arrow <- arrow::arrow_table(mtcars)
withr::with_tempfile("data_file", fileext = ".csv", code = {
expect_error(export(mtcars_arrow, data_file), NA) ## no concept of rownames
expect_true(inherits(import(data_file), "data.frame"))
})
})
test_that("Simulate arrow is not installed, #376", {
## although this is pretty meaningless
withr::with_tempfile("data_file", fileext = ".csv", code = {
with_mocked_bindings({
export(mtcars, data_file)
expect_error(import(data_file, setclass = "arrow"), "Suggested package")
}, .check_pkg_availability = function(pkg, lib.loc = NULL) {
stop("Suggested package `", pkg, "` is not available. Please install it individually or use `install_formats()`", call. = FALSE)
})
})
})
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.