runtests

#!/bin/bash

USAGE="
$0 {test rom}
For each test rom, or all under tests/ if omitted, run the test in headless mode
and output results. Will exit success only if all listed tests pass.
"

BGB_DEBUGMSG_PATH="$HOME/Downloads/bgb/debugmsg.txt"
SUCCESS_TOKEN="=== Success ==="

runtest() {
	echo "Running test rom: $1"
	rm -f "$BGB_DEBUGMSG_PATH"
	bgb -hf "$1"
	if ! [ -f "$BGB_DEBUGMSG_PATH" ]; then
		echo "Test rom failed to start, or did not emit any messages"
		return 1
	fi
	cat "$BGB_DEBUGMSG_PATH" | grep -vF "$SUCCESS_TOKEN"
	grep -qF "$SUCCESS_TOKEN" "$BGB_DEBUGMSG_PATH" # sets exit status
}

if [ "$#" -gt 0 ]; then
	roms=("$@")
else
	roms=()
	# Note the process substitution is needed here (instead of a pipeline)
	# or else the while body will execute in a subshell and roms will be unchanged.
	while read line; do
		# special case: meta_test/2_this_fails is meant to fail and should be excluded
		[ "$line" == "tests/meta_test/2_this_fails.gb" ] && continue
		roms+=("$line")
	done < <(find tests/ -name '*.gb' | sort)
fi

code=0
for rom in "${roms[@]}"; do
	if ! runtest "$rom"; then
		echo "$rom failed!"
		code=1
	fi
	echo
done
exit "$code"