Check for existence and access rights of directories

Check for existence and access rights of directories

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")
#> [1] TRUE

# Is R's home directory readable and writable?
testDirectory(R.home(), "rw")
#> [1] FALSE