checkmate (version 1.8.1)

checkFileExists: Check existence and access rights of files

Description

Check existence and access rights of files

Usage

checkFileExists(x, access = "", extension = NULL)
check_file_exists(x, access = "", extension = NULL)
assertFileExists(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
assert_file_exists(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
testFileExists(x, access = "", extension = NULL)
test_file_exists(x, access = "", extension = NULL)
expect_file_exists(x, access = "", extension = NULL, info = NULL, label = vname(x))
checkFile(x, access = "", extension = NULL)
assertFile(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
assert_file(x, access = "", extension = NULL, .var.name = vname(x), add = NULL)
testFile(x, access = "", extension = NULL)
expect_file(x, access = "", extension = NULL, 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.

extension

[character] Vector of allowed file extensions, matched case insensitive.

.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 return TRUE. If the check is not successful, assertFileExists/assert_file_exists throws an error message, testFileExists/test_file_exists returns FALSE, and checkFileExists returns a string with the error message. The function expect_file_exists always returns an expectation.

See Also

Other filesystem: checkAccess, checkDirectoryExists, checkPathForOutput

Examples

# Check if R's COPYING file is readable
testFileExists(file.path(R.home(), "COPYING"), access = "r")

# Check if R's COPYING file is readable and writable
testFileExists(file.path(R.home(), "COPYING"), access = "rw")