code: def tearDownClass(cls):
      integrate.shutdown()
      cls.ctx.pop()
      clear_context_caches()
  
imports: from unittest import main, TestCase, TestSuite
  import pycuda.driver
  import pycuda.gpuarray
  from pycuda.tools import clear_context_caches, make_default_context
  import numpy
  import skcuda.misc
  import skcuda.integrate
  import scipy.integrate
label_desc: Use image node_id 2 for calling the test_integrate obj's underlying member method code with example usage: obj.tearDownClass(cls) without return types