code: def test_suite():
      test_loader = unittest.TestLoader()
      test_suite = test_loader.discover(
          "towhee/tests", pattern="test_*.py"
      )
      return test_suite
  
imports: import sys
  import unittest
  from pathlib import Path
  from typing import List
  from setuptools import find_packages, setup
  from setuptools.command.install import install
label_desc: Use image node_id 1 for calling a global function with example usage: test_suite() and returns: test_suite