unit testing framework

tests/example_unit_test.c

@@ -0,0 +1,20 @@
+/* Unit tests are normal programs, so they can include C library.  */
+#include <string.h>
+
+/* All tests need to include test.h for GRUB testing framework.  */
+#include <grub/test.h>
+
+/* Unit test main method.  */
+static void
+example_test (void)
+{
+  /* Check if 1st argument is true and report with default error message.  */
+  grub_test_assert (1 == 1);
+
+  /* Check if 1st argument is true and report with custom error message.  */
+  grub_test_assert (2 == 2, "2 equal 2 expected");
+  grub_test_assert (2 == 3, "2 is not equal to %d", 3);
+}
+
+/* Register example_test method as a unit test.  */
+GRUB_UNIT_TEST ("example_unit_test", example_test);