assert_excludes {assertions}

Assert object does not include any illegal values

Description

Assert x does not include illegal elements

Usage

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

Arguments

x

An object

illegal

The prohibited elements to check for

msg

A character string describing the error message if x includes any illegal elements

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 x includes any illegal elements, otherwise aborts with the error message specified by msg

Examples

try({
assert_directory(system.file("package = assertions"))
assert_directory("foo") # Throws Error
})