code: def _test_call_given_model(self, model, gpu):
      # This method only check if a given model can receive random input
      # data and return output data with the correct interface.
      batch_size = 7
      obs = np.random.rand(batch_size, self.n_dim_obs).astype(
          np.float32
      )
      action = np.random.rand(batch_size, self.n_dim_action).astype(
          np.float32
      )
      if gpu >= 0:
          model.to_gpu(gpu)
          obs = chainer.cuda.to_gpu(obs)
          action = chainer.cuda.to_gpu(action)
      y = model(obs, action)
      self.assertTrue(isinstance(y, chainer.Variable))
      self.assertEqual(y.shape, (batch_size, 1))
      self.assertEqual(
          chainer.cuda.get_array_module(y),
          chainer.cuda.get_array_module(obs),
      )
  
imports: import unittest
  import chainer
  import numpy
label_desc: Use image node_id 1 for calling the _TestSAQFunction obj's underlying member method code with example usage: obj._test_call_given_model(model, gpu) without return types