Simple testing in C

test.c

int
check(const char *s, int p)
{
	static int passes = 0;
	static int failures = 0;
	const char *fail = "\x1B[31mFAIL\x1B[0m";
	const char *pass = "\x1B[34mPASS\x1B[0m";

	if (s) {
		fprintf(stderr, "[%s] %s\n", p ? pass : fail, s);

		passes += p;
		failures += !p;
		return 0;
	}

	fprintf(stderr, "#%s: %d of %d\n", pass, passes, passes + failures);
	if (failures == 0)
		return 0;

	fprintf(stderr, "#%s: %d of %d\n", fail, failures, passes + failures);
	return 1;
}