Implement code for integration test post

src/bin/test-panic.rs

@@ -0,0 +1,27 @@
+#![feature(panic_implementation)]
+#![feature(const_fn)]
+#![no_std]
+#![cfg_attr(not(test), no_main)]
+
+#[macro_use]
+extern crate blog_os;
+
+#[cfg(not(test))]
+use core::panic::PanicInfo;
+use blog_os::exit_qemu;
+
+#[cfg(not(test))]
+#[no_mangle]
+pub extern "C" fn _start() -> ! {
+    panic!();
+}
+
+#[cfg(not(test))]
+#[panic_implementation]
+#[no_mangle]
+pub fn panic(_info: &PanicInfo) -> ! {
+    serial_println!("ok");
+
+    unsafe { exit_qemu(); }
+    loop {}
+}