#!/usr/bin/env bash
# `run-gnu-test.bash [TEST]`
# run GNU test (or all tests if TEST is missing/null)

# spell-checker:ignore (env/vars) GNULIB SRCDIR SUBDIRS OSTYPE ; (utils) shellcheck gnproc greadlink

# ref: [How the GNU coreutils are tested](https://www.pixelbeat.org/docs/coreutils-testing.html) @@ <https://archive.is/p2ITW>
# * note: to run a single test => `make check TESTS=PATH/TO/TEST/SCRIPT SUBDIRS=. VERBOSE=yes`

# Use GNU version for make, nproc, readlink on *BSD
case "$OSTYPE" in
    *bsd*)
        MAKE="gmake"
        NPROC="gnproc"
        READLINK="greadlink"
        ;;
    *)
        MAKE="make"
        NPROC="nproc"
        READLINK="readlink"
        ;;
esac

ME_dir="$(dirname -- "$("${READLINK}" -fm -- "$0")")"
REPO_main_dir="$(dirname -- "${ME_dir}")"

echo "ME_dir='${ME_dir}'"
echo "REPO_main_dir='${REPO_main_dir}'"

set -e

### * config (from environment with fallback defaults); note: GNU and GNULIB are expected to be sibling repo directories

path_UUTILS=${path_UUTILS:-${REPO_main_dir}}
path_GNU="$("${READLINK}" -fm -- "${path_GNU:-${path_UUTILS}/../gnu}")"

echo "path_UUTILS='${path_UUTILS}'"
echo "path_GNU='${path_GNU}'"

###

cd "${path_GNU}" && echo "[ pwd:'${PWD}' ]"

export RUST_BACKTRACE=1

if test "$1" != "run-root"; then
    if test $# -ge 1; then
        # if set, run only the tests passed
        SPECIFIC_TESTS=""
        for t in "$@"; do

            # Construct the full path
            full_path="$path_GNU/$t"

            # Check if the file exists with .sh, .pl extension or without any extension in the $path_GNU directory
            if [ -f "$full_path" ] || [ -f "$full_path.sh" ] || [ -f "$full_path.pl" ]; then
                SPECIFIC_TESTS="$SPECIFIC_TESTS $t"
            else
                echo "Error: Test file $full_path, $full_path.sh, or $full_path.pl does not exist!"
                exit 1
            fi
        done
        # trim it
        SPECIFIC_TESTS=$(echo "$SPECIFIC_TESTS" | xargs)
        echo "Running specific tests: $SPECIFIC_TESTS"
    fi
fi

# * timeout used to kill occasionally errant/"stuck" processes (note: 'release' testing takes ~1 hour; 'debug' testing takes ~2.5 hours)
# * `gl_public_submodule_commit=` disables testing for use of a "public" gnulib commit (which will fail when using shallow gnulib checkouts)
# * `srcdir=..` specifies the GNU source directory for tests (fixing failing/confused 'tests/factor/tNN.sh' tests and causing no harm to other tests)
#shellcheck disable=SC2086

if test "$1" != "run-root"; then
    # run the regular tests
    if test $# -ge 1; then
        timeout -sKILL 4h "${MAKE}" -j "$("${NPROC}")" check TESTS="$SPECIFIC_TESTS" SUBDIRS=. RUN_EXPENSIVE_TESTS=yes RUN_VERY_EXPENSIVE_TESTS=yes VERBOSE=no gl_public_submodule_commit="" srcdir="${path_GNU}" || : # Kill after 4 hours in case something gets stuck in make
    else
        timeout -sKILL 4h "${MAKE}" -j "$("${NPROC}")" check SUBDIRS=. RUN_EXPENSIVE_TESTS=yes RUN_VERY_EXPENSIVE_TESTS=yes VERBOSE=no gl_public_submodule_commit="" srcdir="${path_GNU}" || : # Kill after 4 hours in case something gets stuck in make
    fi
else
    # in case we would like to run tests requiring root
    if test -z "$1" -o "$1" == "run-root"; then
        if test -n "$CI"; then
            echo "Running check-root to run only root tests"
            sudo "${MAKE}" -j "$("${NPROC}")" check-root SUBDIRS=. RUN_EXPENSIVE_TESTS=yes RUN_VERY_EXPENSIVE_TESTS=yes VERBOSE=no gl_public_submodule_commit="" srcdir="${path_GNU}" TEST_SUITE_LOG="tests/test-suite-root.log" || :
        fi
    fi
fi