diff-after-compile-and-run.sh

#!/bin/bash
# This script assumes you're using the directory layout described in the
# documentation at: https://voc.readthedocs.io/en/latest/tutorials/tutorial-0.html

set -e
#set -x

abort() {
    echo "$*"; exit 1;
}

usage() {
    abort "Usage: $(basename $0) [-h|--help] PY_SCRIPT_FILE"
}

require() {
    type $1 >/dev/null 2>/dev/null
}

classpath=.
while [ "${1#-}" != "$1" ]; do
    case "$1" in
        -h|--help) usage;;
        -cp|--classpath) classpath="$2:."; shift;;
        *) usage;;
    esac
    shift
done
pyfile="$1"
basefile=$(basename $pyfile .py)

(cd ../voc && ant java)

voc -v $pyfile

java_output=$(java -cp ../voc/dist/python-java-support.jar:$classpath python.${basefile})
python_output=$(python $pyfile)

diff -y <(echo PYTHON) <(echo JAVA) || true
diff -y <(echo "$python_output") <(echo "$java_output") && echo PASS || echo FAILED