specify posix.signal:
- before:
    sig = require "posix.signal"


- describe kill:
  - context with bad arguments:
      badargs.diagnose (sig.kill, "(int, ?int)")


- describe killpg:
  - context with bad arguments:
      badargs.diagnose (sig.killpg, "(int, ?int)")


- describe raise:
  - context with bad arguments:
      badargs.diagnose (sig.raise, "(int)")


- describe signal:
  - context with bad arguments:
      badargs.diagnose (sig.signal, "(int, ?function|string, ?int)")
