code: def test_private_app_registry():
      registry = cmd_install._resolve_app_registry()
      assert registry == "https://TODO/other_non_PL_registry"
  
imports: import os
  import subprocess
  from pathlib import Path
  from unittest import mock
  import pytest
  from click.testing import CliRunner
  from lightning.app.cli import cmd_install, lightning_cli
  from lightning.app.testing.helpers import _RunIf
label_desc: Use image node_id 15 for calling a global function with example usage: test_private_app_registry() without return types