runSuite

#!/bin/bash
# runSuite suite-file program
# runSuite runs program on each test in the test suite and 
# (takes in the args if there is .args)
# reports on any tests whose output does not match the expected output.
# prints an informative error message to stderr and
#  abort with 1 when:
#       incorrect number of command line arguments
#  abort with 2 when:
#       missing .in files
#  abort with 3 when:
#       .in is not a regular file
#  abort with 4 when:
#       .in is unreadable
MASK="Ulalaulalaulaulau"
usage () {
        echo "Incorrect number of command line arugments.
Usage: runSuite suite-file program" >&2
        exit 1
}

if [ ${#} -ne 2 ]; then
	usage
fi
for word in $(cat $1); do
	
	 if [ ! -e ${word}.in -o ! -e ${word}.out ]; then
		if [ ! -e ${word}.in ]; then
                echo "The file ${word}.in does not exist." >&2;fi
		if [ ! -e ${word}.out ]; then
		echo "The file ${word}.out does not exist." >&2;fi
		exit 2
        elif [ ! -f ${word}.in -o ! -f ${word}.out ]; then
		if [ ! -f ${word}.in ]; then
                echo "The file ${word}.in is not a regular file." >&2;fi
		if [ ! -f ${word}.out ]; then
                echo "The file ${word}.out is not a regular file." >&2;fi
                exit 3
        elif [ ! -r ${word}.in -o ! -r ${word}.out ]; then
		if [ ! -r ${word}.in ]; then
                echo "The file ${word}.in is not readable." >&2;fi
		if [ ! -r ${word}.out ]; then
                echo "The file ${word}.out is not readable." >&2;fi
                exit 4
	else
		add1=/tmp/$MASK$word.tmp
		touch $add1
		ARGS=''
                if [ -e ${word}.args ]; then ARGS=$(cat ${word}.args); fi
		"$2" $ARGS < "${word}.in" > $add1
		if ! diff -q $add1 "$word".out &>/dev/null; then
			echo -e "Test failed: $word\nInput:\n$(cat $word.in)"
			echo -e "Expected:\n$(cat $word.out)"
			echo -e "Actual:\n$(cat $add1)"
		fi
		rm $add1
	fi
done