#!/usr/bin/env bash
# Build and run the firmware's host tests. Exits non-zero on any failure.
#
# Dependencies: gcc (and libm, which ships with it). Nothing else — no
# ESP-IDF, no make required (there is a Makefile, but this script does not
# depend on it), no test framework, no package install.
#
# These tests cover PURE LOGIC ONLY: frame parsing, byte order, compensation
# maths, level maths. They do not and cannot verify wiring, timing, or how
# the real silicon behaves. See ../README.md "What's verified vs. not".
set -euo pipefail

cd "$(dirname "$0")"

CC="${CC:-gcc}"
CFLAGS=(-std=c11 -O1 -g -Wall -Wextra -Werror)
BUILD="build"
BIN="$BUILD/firmware_tests"

if ! command -v "$CC" >/dev/null 2>&1; then
    echo "run_tests.sh: '$CC' not found; install gcc (or set CC=clang)" >&2
    exit 127
fi

mkdir -p "$BUILD"

echo "== building host tests with $CC ${CFLAGS[*]}"
"$CC" "${CFLAGS[@]}" -o "$BIN" \
    ../main/rd03e_parse.c \
    ../main/bmp280_compensate.c \
    ../main/mems_level.c \
    test_main.c \
    test_rd03e_parse.c \
    test_bmp280_compensate.c \
    test_mems_level.c \
    -lm

echo "== running"
"./$BIN"