#!/bin/bash

function compare
{
   expected=$2
   actual=$3
   if [[ "$expected" != "$actual" ]]; then
      echo "Test failed: $1"
      echo "Expected = $expected"
      echo "  Actual = $actual"
      exit 1
   fi
}

if [[ $# -lt 2 ]]; then
   echo "$0 <reference.rb> <test.rb> [seed]"
   exit 1
fi
GOLD=$1
TEST=$2
SEED=${3-1337}

# Check for identical output across different sizes and different seeds
for h in 0 40 60 100 256; do
   for w in 0 64 96 160 256; do
      expected=$(ruby "$GOLD" $h $w $SEED | md5sum -)
      actual=$(ruby "$TEST" $h $w $SEED | md5sum -)
      compare "md5 check $h $w $SEED" "$expected" "$actual"
   done
done