(1/10) Bad:
testerror: option '-s' needs an argument.
Arg module testing
  -s missing arg
  -help  Display this list of options
  --help  Display this list of options

(2/10) Bad:
testerror: wrong argument 'true'; option '-set=true' expects no argument.
Arg module testing
  -set no argument expected
  -help  Display this list of options
  --help  Display this list of options

(3/10) Help:
Arg module testing
  -help  Display this list of options
  --help  Display this list of options

(4/10) Bad:
testerror: wrong argument 'not_an_int'; option '-int' expects an integer.
Arg module testing
  -int wrong argument type
  -help  Display this list of options
  --help  Display this list of options

(5/10) Bad:
testerror: unknown option '-an-unknown-option'.
Arg module testing
  -help  Display this list of options
  --help  Display this list of options

(6/10) Bad:
testerror: User-raised error.
Arg module testing
  -help  Display this list of options
  --help  Display this list of options

(7/10) Bad:
testerror: User-raised error bis.
Arg module testing
  -error user raised error
  -help  Display this list of options
  --help  Display this list of options

(8/10) Bad:
testerror: wrong argument '1'; option '-rest=1' expects no argument.
Arg module testing
  -rest help
  -help  Display this list of options
  --help  Display this list of options

(9/10) Bad:
testerror: wrong argument '1'; option '-tuple=1' expects no argument.
Arg module testing
  -tuple help
  -help  Display this list of options
  --help  Display this list of options

(10/10) Bad:
testerror: wrong argument '1'; option '-unit=1' expects no argument.
Arg module testing
  -help  Display this list of options
  --help  Display this list of options