#!/bin/sh -eux

# Marshalparser helps us to uniform byte-compiled Python files
# so it has to be able to also parse pyc files from
# the main python packages.
# Moreover, it has its own database of magic numbers so this test
# checks that the parser is compatible with the latest python before
# we ship it.

# Test the latest version by default because that's the place
# where magic number incompatibility might happen with
# the largest probability
VERSION=${VERSION:-3.9}

# How many randomly-selected pyc files to check?
SAMPLE=${SAMPLE:-50}

# This allows us to test marshalparser optionally: on Fedora 33+ only
INSTALL_OR_SKIP=${INSTALL_OR_SKIP:-false}
if [ "$INSTALL_OR_SKIP" == "true" ] && [ ! -f "/usr/bin/marshalparser" ]; then
  dnf -y install marshalparser || :
  if [ ! -f "/usr/bin/marshalparser" ]; then
    echo "marshalparser not installable, skipping this test"
    exit 0
  fi
fi

path="/usr/lib*/python$VERSION/"

for file in `find $path -name "*.pyc" | shuf | head -n $SAMPLE`; do
  marshalparser $file || exit 1
done