code: def setUp(self):
      self.pool = memory.MemoryPool()
      self.unit = 512
  
file_path: cupy/tests/cupy_tests/cuda_tests/test_memory_hook.py
imports: import unittest
  import cupy.cuda
  from cupy.cuda import memory
  from cupy.cuda import memory_hook
label_desc: Use image node_id 1 for calling the TestMemoryHook obj's underlying member method code with example usage: obj.setUp() without return types