diff --git a/src/interrupts.rs b/src/interrupts.rs
index 1e3f168..d0440b1 100644
--- a/src/interrupts.rs
+++ b/src/interrupts.rs
@@ -17,4 +17,10 @@ extern "x86-interrupt" fn breakpoint_handler(
     stack_frame: InterruptStackFrame)
 {
     println!("EXCEPTION: BREAKPOINT\n{:#?}", stack_frame);
+}
+
+#[test_case]
+fn test_breakpoint_exception() {
+    // invoke a breakpoint exception
+    x86_64::instructions::interrupts::int3();
 }
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index a3bea39..297bb59 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -50,6 +50,7 @@ pub fn test_panic_handler(info: &PanicInfo) -> ! {
 #[cfg(test)]
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
+    init();
     test_main();
     loop {}
 }