code: def test_installed(self):
      assert testing.installed("cupy")
      assert testing.installed("cupy>9", "numpy>=1.12")
      assert testing.installed("numpy>=1.10,<=2.0")
      assert not testing.installed("numpy>=2.0")
      assert not testing.installed("numpy>1.10,<1.9")
  
imports: import unittest
  import numpy
  import pytest
  import cupy
  from cupy import testing
label_desc: Use image node_id 1 for calling the TestPackageRequirements obj's underlying member method code with example usage: obj.test_installed() without return types