Add dummy functoin that does a simple addition to verify that unit tests are working

Signed-off-by: Noah Knegt <git@noahknegt.com>

kernel/src/lib.rs

@@ -21,6 +21,7 @@ pub fn main(boot_info: &'static mut BootInfo) -> ! {
     logger::init_logger(buffer, info);
 
     log::info!("Hello World from KERNEL");
+    log::debug!("ADDING 1 & 6, result == {}", add(1, 6));
 
     // Endless loop as the kernel must stay running
     loop {}
@@ -33,3 +34,12 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
     log::error!("{}", info);
     loop {}
 }
+
+fn add(a: i32, b: i32) -> i32 {
+    a + b
+}
+
+#[test]
+fn add_test() {
+    assert_eq!(add(1, 2), 3);
+}