testreplacediff

#!/bin/bash

#---------------------------------------------------------------------
# testreplacediff
# Author: Bob Dondero
#---------------------------------------------------------------------

#---------------------------------------------------------------------
# testreplacediff is a testing script for the replace program.
# To run it, issue the command "./testreplacediff" followed by
# the name of an input file, a "from" string, and a "to" string.
#
# The script runs the replace program and the given samplereplace
# program on the specified file with the specified "from" string and
# "to" string, and makes sure that the two programs have the same
# exit status and write the same characters to stdout and stderr.
#---------------------------------------------------------------------

# Validate the arguments.
if [ "$#" != "3" ]; then
   echo "Usage: testreplacediff file fromStr toStr"
   exit 1
fi

# Limit the amount of CPU time consumed to 2 seconds.
ulimit -t 2

# Limit the size of created files to 100*1024 bytes.
ulimit -f 100

# Capture the arguments.
file=$1
fromStr=$2
toStr=$3

echo "Test with file" $file "and fromStr [" $fromStr \
   "] and toStr [" $toStr "]"

# Run samplereplace on the input file, and capture its exit status.
./samplereplace "$fromStr" "$toStr" < "$file" > __stdout1 2> __stderr1
ret1=$?

# Run replace on the input file, and capture its exit status.
./replace "$fromStr" "$toStr" < "$file" > __stdout2 2> __stderr2
ret2=$?

# Check the exit status.
if [ $ret1 != $ret2 ]; then
   echo "   ***** Exit status is incorrect."
fi

# Check the stdout streams.
diff __stdout1 __stdout2 > __diffout
if [ $? != "0" ]; then
   echo "   ***** stdout is incorrect."
fi

# Check the stderr streams.
diff __stderr1 __stderr2 > __differr
if [ $? != "0" ]; then
   echo "   ***** stderr is incorrect."
fi

# Clean up.
rm __stdout1 __stdout2 __stderr1 __stderr2 __diffout __differr