功能：接入Linux原生光标并完善设备接入工具

tools/tests/test_usb_device_qmp.py

@@ -1,5 +1,7 @@
 import importlib.util
 from pathlib import Path
+import socket
+import threading
 import unittest
 
 spec = importlib.util.spec_from_file_location("usb_qmp", Path(__file__).parents[1] / "usb-device-qmp.py")
@@ -51,6 +53,24 @@ class UsbQmpTests(unittest.TestCase):
             usb.attach(q, 100, 40001, "ehci-2.0", "0951", "1666")
         self.assertEqual(q.calls[-1], ("chardev-remove", {"id": "vdi_usb_box_100"}))
 
+    def test_status_probe_distinguishes_ready_from_empty(self):
+        listener = socket.socket()
+        listener.bind(("127.0.0.1", 0))
+        listener.listen()
+        port = listener.getsockname()[1]
+
+        def serve():
+            conn, _ = listener.accept()
+            conn.sendall(b"ready\n")
+            conn.close()
+            listener.close()
+
+        thread = threading.Thread(target=serve)
+        thread.start()
+        self.assertTrue(usb.probe_status(port, timeout=1))
+        thread.join(timeout=1)
+        self.assertFalse(usb.probe_status(port, timeout=0.05))
+
 
 if __name__ == "__main__":
     unittest.main()