#!/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