code: def test_evaluate_actions(self):
      sample_actions = np.random.randint(
          self.action_size, size=self.batch_size
      )
      ret = self.qout.evaluate_actions(sample_actions)
      self.assertIsInstance(ret, chainer.Variable)
      for b in range(self.batch_size):
          self.assertAlmostEqual(
              ret.array[b], self.q_values[b, sample_actions[b]]
          )
  
imports: import unittest
  import chainer
  import chainer.functions
  from chainer import testing
  import numpy
  from chainerrl import action_value
label_desc: Use image node_id 4 for calling the TestDiscreteActionValue obj's underlying member method code with example usage: obj.test_evaluate_actions() without return types