fix PCAN test DeprecationWarnings (#1801)

Author: zariiii9003

test/test_pcan.py

@@ -54,7 +54,9 @@ def test_bus_creation(self) -> None:
 
         self.assertIsInstance(self.bus, PcanBus)
         self.assertEqual(self.bus.protocol, CanProtocol.CAN_20)
-        self.assertFalse(self.bus.fd)
+
+        with pytest.deprecated_call():
+            self.assertFalse(self.bus.fd)
 
         self.MockPCANBasic.assert_called_once()
         self.mock_pcan.Initialize.assert_called_once()
@@ -83,7 +85,9 @@ def test_bus_creation_fd(self, clock_param: str, clock_val: int) -> None:
 
         self.assertIsInstance(self.bus, PcanBus)
         self.assertEqual(self.bus.protocol, CanProtocol.CAN_FD)
-        self.assertTrue(self.bus.fd)
+
+        with pytest.deprecated_call():
+            self.assertTrue(self.bus.fd)
 
         self.MockPCANBasic.assert_called_once()
         self.mock_pcan.Initialize.assert_not_called()