checkDirectoryExists: Check for existence and access rights of directories

In checkmate: Fast and Versatile Argument Checks

Check for existence and access rights of directories

Description

Check for existence and access rights of directories

Usage

checkDirectoryExists(x, access = "")

check_directory_exists(x, access = "")

assertDirectoryExists(x, access = "", .var.name = vname(x), add = NULL)

assert_directory_exists(x, access = "", .var.name = vname(x), add = NULL)

testDirectoryExists(x, access = "")

test_directory_exists(x, access = "")

expect_directory_exists(x, access = "", info = NULL, label = vname(x))

checkDirectory(x, access = "")

assertDirectory(x, access = "", .var.name = vname(x), add = NULL)

assert_directory(x, access = "", .var.name = vname(x), add = NULL)

testDirectory(x, access = "")

test_directory(x, access = "")

expect_directory(x, access = "", info = NULL, label = vname(x))

Arguments

x	[any] Object to check.
access	[character(1)] Single string containing possible characters ‘r’, ‘w’ and ‘x’ to force a check for read, write or execute access rights, respectively. Write and executable rights are not checked on Windows.
.var.name	[character(1)] Name of the checked object to print in assertions. Defaults to the heuristic implemented in vname.
add	[AssertCollection] Collection to store assertion messages. See AssertCollection.
info	[character(1)] Extra information to be included in the message for the testthat reporter. See expect_that.
label	[character(1)] Name of the checked object to print in messages. Defaults to the heuristic implemented in vname.

Value

Depending on the function prefix: If the check is successful, the functions assertDirectoryExists/assert_directory_exists return x invisibly, whereas checkDirectoryExists/check_directory_exists and testDirectoryExists/test_directory_exists return TRUE. If the check is not successful, assertDirectoryExists/assert_directory_exists throws an error message, testDirectoryExists/test_directory_exists returns FALSE, and checkDirectoryExists/check_directory_exists return a string with the error message. The function expect_directory_exists always returns an expectation.

Note

The functions without the suffix “exists” are deprecated and will be removed from the package in a future version due to name clashes.

See Also

Other filesystem: checkAccess(), checkFileExists(), checkPathForOutput()

Examples

# Is R's home directory readable?
testDirectory(R.home(), "r")

# Is R's home directory readable and writable?
testDirectory(R.home(), "rw")

checkmate documentation built on Aug. 18, 2025, 5:36 p.m.