Change glib test framework to minunit

tests/add.c

@@ -0,0 +1,30 @@
+#include "minunit.h"
+#include "add.h"
+#include <stdlib.h> /* exit() */
+#include <stdio.h> /* perror(), printf(), fprintf() */
+
+
+int tests_run=0;
+
+char * add_test() {
+  mu_assert("add(1,2) must produce 3", add(1,2) == 4);
+  return 0;
+}
+
+char * all_tests() {
+  mu_run_test(add_test);
+  return 0;
+}
+
+int main(int argc, char *argv[])
+{
+  char *result = all_tests();
+  if (result) {
+    printf("FAILURE\n");
+    exit(1);
+  }
+  printf("ALL TESTS PASSED");
+
+
+  return 0;
+}

tests/minunit.h

@@ -0,0 +1,8 @@
+#ifndef MINUNIT_H
+#define MINUNIT_H
+
+extern int tests_run;
+#define mu_assert(message,test) do { if (!(test)) return message; } while (0)
+#define mu_run_test(test) do { char *result = test(); tests_run++; if (result) return result; } while (0)
+
+#endif /* MINUNIT_H */