added serial ports communication + Testable trait

src/main.rs

@@ -7,6 +7,22 @@
 use core::panic::PanicInfo;
 
 mod vga_buffer;
+mod serial;
+
+pub trait Testable {
+    fn run(&self) -> ();
+}
+
+impl<T> Testable for T
+where
+    T: Fn(),
+{
+    fn run(&self) -> () {
+        serial_print!("{}...\t", core::any::type_name::<T>());
+        self();
+        serial_println!("[ok]");
+    }
+}
 
 static HELLO: &[u8] = b"Hello toto :3";
 
@@ -38,7 +54,8 @@ pub extern "C" fn _start() -> ! {
     loop {}
 }
 
-// called on panic
+// panic handler
+#[cfg(not(test))]
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {
     println!("{}", info);
@@ -46,12 +63,23 @@ fn panic(info: &PanicInfo) -> ! {
     loop {}
 }
 
+// panic handler in test mode
 #[cfg(test)]
-pub fn test_runner(tests: &[&dyn Fn()]) {
-    println!("Running {} tests", tests.len());
+#[panic_handler]
+fn panic(info: &PanicInfo) -> ! {
+    serial_println!("[failed]\n");
+    serial_println!("Error: {}\n", info);
+    exit_qemu(QemuExitCode::Failed);
+
+    loop {}
+}
+
+#[cfg(test)]
+pub fn test_runner(tests: &[&dyn Testable]) {
+    serial_println!("Running {} tests", tests.len());
 
     for test in tests {
-        test();
+        test.run();
     }
 
     exit_qemu(QemuExitCode::Success);
@@ -59,7 +87,5 @@ pub fn test_runner(tests: &[&dyn Fn()]) {
 
 #[test_case]
 fn trivial_assertion() {
-    print!("asserzione triviale... ");
     assert_eq!(1, 1);
-    println!("[ok]");
 }