add missing code

tests/test_types.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""Created on Tue Mar 28 2023 15:19:35 by codeskyblue
+"""
+
+from tidevice._types import DeviceInfo
+
+
+def test_device_info():
+    info = DeviceInfo.from_json({"udid": "123", "DeviceID": 1, "conn_type": "usb", "extra": "foo"})
+    assert info.udid == "123"
+    assert info.device_id == 1
+    assert info.conn_type == "usb"

tidevice/_instruments.py

@@ -703,7 +703,6 @@ def app_launch(self,
         code = self.make_channel(self._SERVICE_PROCESS_CONTROL)
         method = "launchSuspendedProcessWithDevicePath:bundleIdentifier:environment:arguments:options:"
         app_path = ""  # not used, just pass empty string
-        #app_args = []  # not used, just pass empty array
 
         options = {
             # don't suspend the process after starting it