rust_run_test.sh

#!/bin/bash

keep=false
while [[ $# -gt 0 ]]
do
key="$1"

case $key in
    -k|--keep)
    keep=true
    shift # past argument
    ;;
esac
done

solution=$(cat solution.rs)
test=$(cat test*.rs | grep -v 'extern')

combined_file=$(mktemp  -p. solution_testXXXXX.rs)
cat << EOF > "${combined_file}"
  mod solution {
        ${solution}
  }
  mod solution_test {
        ${test}
  }
EOF

combined_exec_file=${combined_file%%.rs}

rustc --test "${combined_file}" -o "${combined_exec_file}"  && ./"${combined_exec_file}"
if [ $keep != true ]; then
    rm "${combined_file}" "${combined_exec_file}"
fi