assert_all_directories_exist | R Documentation |
Assert that all paths supplied exist and are directories.
To assert a single directory exists, see assert_directory_exists()
assert_all_directories_exist(
x,
msg = NULL,
call = rlang::caller_env(),
arg_name = NULL
)
x |
Paths to directories (character) |
msg |
A character string containing the error message if file |
call |
Only relevant when pooling assertions into multi-assertion helper functions. See cli_abort for details. |
arg_name |
Advanced use only. Name of the argument passed (default: NULL, will automatically extract arg_name). |
invisible(TRUE) if x
is exists and is a directory, otherwise aborts with the error message specified by msg
try({
assert_directory(system.file("package = assertions")) # PASSES
assert_directory("foo") # Throws Error
})
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