Assert that all files exist — assert_all_files_exist • assertions

Assert all files in vector exist. To assert a single file exists, see assert_file_exists()

Usage

assert_all_files_exist(
  x,
  msg = NULL,
  call = rlang::caller_env(),
  arg_name = NULL
)

Arguments

x: Paths to files (character)
msg: A character string containing the error message if any files in x is does not exist
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).

Value

invisible(TRUE) if all files in x exist, otherwise aborts with the error message specified by msg

Examples

real_file <- system.file("DESCRIPTION", package = "assertions")

try({
assert_all_files_exist(c(real_file, real_file))
assert_all_files_exist(c("foo", "bar")) # Throws Error
})
#> Error in eval(expr, envir) : 
#>   Failed to find files: foo and bar