rewrite testing code to be a bit more durable and clean.

test/test.c

@@ -0,0 +1,19 @@
+/* Copyright (c) 2025 Quinn
+ * Licensed under the MIT Licence. See LICENSE for details */
+#include "test.h"
+
+#include "../src/util/intdef.h"
+
+uint test_okay = 0;
+uint test_fail = 0;
+
+int test_process(int res, const char *restrict file, uint ln, const char *restrict function, const char *restrict expression) {
+	const char *status = res ?
+		"[\033[32;1m  OK  \033[0m]" :
+		"[\033[31;1m FAIL \033[0m]";
+	test_okay += !!res;
+	test_fail += !res;
+
+	printf("%s\t%s:%u-%s\t-> %s\n", status, file, ln, function, expression);
+	return res;
+}