test_that("parquet CLI can read files written by write_parquet()", { skip_without_parquet_cli() tmp <- tempfile(fileext = ".parquet") on.exit(unlink(tmp), add = TRUE) write_parquet(mtcars, tmp) res <- processx::run("parquet", c("cat", tmp), error_on_status = FALSE) expect_equal(res$status, 0L) })