#!/bin/bash

# Exit with error message
function Die()
{
   echo "$1"
   exit 1
}

# Check arguments
if [[ $# != 1 ]]; then
   Die "$0 <program>"
fi
PROGRAM=$1

$PROGRAM > /dev/null || Die "Failed 0-arg case"
$PROGRAM $PROGRAM > /dev/null || Die "Failed 1-arg case"
$PROGRAM $PROGRAM $PROGRAM > /dev/null || Die "Failed 2-arg case"
$PROGRAM test_input_nonexistent > /dev/null && Die "Did not fail as expected"

exit 0