gistfile1.sh

#!/bin/bash
if [ $# -lt 1 ]
then
    echo "Needs program filename argument"
    exit 1
fi

executable=`mktemp`
echo "Testing $1"
echo

if [ $# -lt 2 ]
then
    testcases=1
else
    testcases=$2
fi

if [ $# -lt 3 ]
then
    extra=''
else
    extra=$3
fi

echo "Compiling ..."
g++ -o $executable $1

if (( $? ))
then
    echo "Compilation failed"
    exit 1
else
    chmod +x $executable
    for ((i = 1; i <= $testcases; i++))
    do
        if ! [ -a "$extra$i.in" ]
        then
            echo "Testcase input $i does not exist"
            exit 1
        fi
        tempresultfile=`mktemp`
        $executable < "$extra$i.in" > $tempresultfile

        diff --ignore-trailing-space $tempresultfile "$extra$i.out" >/dev/null
        if (( $? ))
        then
            echo "Test $i failed"
            sdiff $tempresultfile "$extra$i.out"
            echo
        else
            echo "Test $i OK"
        fi
    done
fi