tests/unix: Add coverage tests for kbd-intr and scheduler.

ports/unix/coverage.c

@@ -476,6 +476,32 @@ STATIC mp_obj_t extra_coverage(void) {
         while (mp_sched_num_pending()) {
             mp_handle_pending(true);
         }
+
+        // setting the keyboard interrupt and raising it during mp_handle_pending
+        mp_keyboard_interrupt();
+        nlr_buf_t nlr;
+        if (nlr_push(&nlr) == 0) {
+            mp_handle_pending(true);
+            nlr_pop();
+        } else {
+            mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
+        }
+
+        // setting the keyboard interrupt (twice) and cancelling it during mp_handle_pending
+        mp_keyboard_interrupt();
+        mp_keyboard_interrupt();
+        mp_handle_pending(false);
+
+        // setting keyboard interrupt and a pending event (intr should be handled first)
+        mp_sched_schedule(MP_OBJ_FROM_PTR(&mp_builtin_print_obj), MP_OBJ_NEW_SMALL_INT(10));
+        mp_keyboard_interrupt();
+        if (nlr_push(&nlr) == 0) {
+            mp_handle_pending(true);
+            nlr_pop();
+        } else {
+            mp_obj_print_exception(&mp_plat_print, MP_OBJ_FROM_PTR(nlr.ret_val));
+        }
+        mp_handle_pending(true);
     }
 
     // ringbuf

tests/unix/extra_coverage.py.exp

@@ -80,6 +80,9 @@ unlocked
 1
 2
 3
+KeyboardInterrupt: 
+KeyboardInterrupt: 
+10
 # ringbuf
 99 0
 98 1