test

#!/usr/bin/env bash

# Synopsis:
# Test the track's exercises.

# Arguments:
# $1: exercise slug: only this exercise will be tested (optional)

# Examples:
# ./bin/test
# ./bin/test two-fer

exercise_slug_filter="$1"
exit_code=0

function test_exercise() {
    exercise_dir="${1}"
    exercise_slug=$(basename "${exercise_dir}")
    example_file_key="${2}"

    if [ -z "${exercise_slug_filter}" ] ||
       [ "${exercise_slug}" == "${exercise_slug_filter}" ]; then
        echo "Checking ${exercise_slug} exercise..."        
        pushd "${exercise_dir}" > /dev/null

        solution_file=$(jq -r '.files.solution[0]' '.meta/config.json')
        test_file=$(jq -r '.files.test[0]' '.meta/config.json')
        example_file=$(jq -r ".files.${example_file_key}[0]" '.meta/config.json')
        tmp_solution_file=$(mktemp --suffix '-solution.scala')
        tmp_test_file=$(mktemp --suffix '-test.scala')

        cp "${solution_file}" "${tmp_solution_file}"
        cp "${test_file}" "${tmp_test_file}"
        cp "${example_file}" "${solution_file}"

        sed -i -e '/^\s*pending\s*$/d' "${test_file}"

        sbt test
        if [ $? -ne 0 ]; then
            exit_code=1
        fi

        mv "${tmp_solution_file}" "${solution_file}"
        mv "${tmp_test_file}" "${test_file}"

        popd > /dev/null
    fi
}

# Verify the Concept Exercises
for concept_exercise_dir in ./exercises/concept/*/; do
    if [ -d $concept_exercise_dir ]; then
        test_exercise "${concept_exercise_dir}" "exemplar"
    fi
done

# Verify the Practice Exercises
for practice_exercise_dir in ./exercises/practice/*/; do
    if [ -d $practice_exercise_dir ]; then
        test_exercise "${practice_exercise_dir}" "example"
    fi
done

exit $exit_code