code: def check_device(self, device):
      assert device.xp is numpy
      assert device.supported_array_types == (numpy.ndarray,)
      assert device.name == "@numpy"
      assert str(device) == "@numpy"
  
imports: import unittest
  import numpy
  from chainer import backend
  from chainer import testing
label_desc: Use image node_id 1 for calling the TestCpuDeviceFromArray obj's underlying member method code with example usage: obj.check_device(device) without return types