test: adapt modules to the new test infrastructure

This not only provides a structural improvement but also
allows us to (1) specify individual tests to run and (2)
execute each of them concurrently.

src/unit_test.h

@@ -22,6 +22,7 @@
 /* --------------------------------------------------------- */
 
 #define CASE(name) { #name, run_##name }
+#define CASE1(name) { #name, name }
 
 #define MAKE_TEST_MODULE(name) { \
     #name, \
@@ -29,6 +30,18 @@
     sizeof(tests_##name) / sizeof(tests_##name[0]) \
 }
 
+/* Macro to wrap a test internal function with a COUNT loop (iterations number) */
+#define REPEAT_TEST(fn) REPEAT_TEST_MULT(fn, 1)
+#define REPEAT_TEST_MULT(fn, multiplier)            \
+    static void fn(void) {                          \
+        int i;                                      \
+        int repeat = COUNT * (multiplier);          \
+        for (i = 0; i < repeat; i++)                \
+            fn##_internal();                        \
+    }
+
+
+
 /* --------------------------------------------------------- */
 /* Test Framework API                                        */
 /* --------------------------------------------------------- */