#!/bin/sh
# Run the RAIL test suite in a batch Emacs.
#
# Required dependency: emacs, with Org mode. Org mode ships with Emacs.
# The suite needs no MCP framework and no configuration. It runs on any
# machine. Every test uses a temporary stream file, so the project stream
# file stays unchanged.
#
# Exit status: 0 when every test passes, 1 otherwise.

set -eu

dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)

if ! command -v emacs >/dev/null 2>&1; then
    echo "Error: emacs is not on PATH. Install Emacs, then run this script again." >&2
    exit 1
fi

for file in rail-tools.el rail-tests.el; do
    if [ ! -r "$dir/$file" ]; then
        echo "Error: cannot read $dir/$file. The skill directory is incomplete." >&2
        exit 1
    fi
done

if emacs --batch -Q \
    -l "$dir/rail-tools.el" \
    -l "$dir/rail-tests.el" \
    -f ert-run-tests-batch-and-exit; then
    echo "RAIL tests passed."
else
    echo "Error: RAIL tests failed. Read the ERT output above for the failing test." >&2
    exit 1
fi