Pass parameters in zsh

demo.zsh

# https://stackoverflow.com/questions/42655304/how-do-i-check-if-a-variable-is-set-in-zsh

test() {
  test2 $@
  test3 $@
}

test2() {
  if [[ $# -eq 0 ]]; then
    echo 'no params'
  else
    echo $@
  fi
}

test3() {
  if [[ -n $1 ]]; then
    echo $1
  else
    echo 'no params'
  fi
}