Write test framework

tests/testing.c

@@ -0,0 +1,21 @@
+#include "testing.h"
+
+#include <stdio.h>
+
+test_run_t test_run;
+
+void testing_fail_msg(const char *func, const char *file, int line)
+{
+	printf("%s: failed assert @ %s:%d\n", func, file, line);
+}
+
+void testing_end_msg(void)
+{
+	const double success_rate
+	    = 1 - (double)test_run.fail_count / (double)test_run.test_count;
+	printf(
+	    "%d tests ran (%d assertions), "
+	    "%0.2f%% successful (%d failures)\n",
+	    test_run.test_count, test_run.assertion_count, 100 * success_rate,
+	    test_run.fail_count);
+}