verify-exercises

#!/usr/bin/env bash

# Synopsis:
# Test the track's exercises.

# Example: verify all exercises
# ./bin/verify-exercises

# Example: verify single exercise
# ./bin/verify-exercises two-fer

set -eo pipefail

required_tool() {
    command -v "${1}" >/dev/null 2>&1 ||
        die "${1} is required but not installed. Please install it and make sure it's in your PATH."
}

required_tool jq
required_tool arturo

copy_example_or_examplar_to_solution() {
    jq -c '[.files.solution, .files.exemplar // .files.example] | transpose | map({src: .[1], dst: .[0]}) | .[]' .meta/config.json | while read -r src_and_dst; do
        cp "$(echo "${src_and_dst}" | jq -r '.src')" "$(echo "${src_and_dst}" | jq -r '.dst')"
    done
}

unskip_tests() {
    jq -r '.files.test[]' .meta/config.json | while read -r test_file; do
        sed -i 's/test.skip/test/g' "${test_file}"
    done
}

run_tests() {
    arturo tester.art
}

verify_exercise() {
    local dir
    local slug
    local tmp_dir

    dir=$(realpath "${1}")
    slug=$(basename "${dir}")
    tmp_dir=$(mktemp -d -t "exercism-verify-${slug}-XXXXX")

    echo "Verifying ${slug} exercise..."

    (
        cp -r "${dir}/." "${tmp_dir}"
        cd "${tmp_dir}"

        copy_example_or_examplar_to_solution
        unskip_tests
        run_tests
    )
}

exercise_slug="${1:-*}"

shopt -s nullglob
for exercise_dir in ./exercises/{concept,practice}/${exercise_slug}/; do
    if [ -d "${exercise_dir}" ]; then
        verify_exercise "${exercise_dir}"
    fi
done