/usr/share/doc/r-cran-withr/tests/testthat/test-defer.R is in r-cran-withr 2.1.0-1ubuntu3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | context("defer")
test_that("defer_parent works", {
local_file <- function(path) {
file.create(path)
defer_parent(unlink(path))
}
# create tempfile path
path <- tempfile()
# use 'local_file' in a function
local({
local_file(path)
stopifnot(file.exists(path))
})
# file is deleted as we leave 'local' scope
expect_false(file.exists(path))
})
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