code: def testActionAlwaysRandom(self):
      policy = py_epsilon_greedy_policy.EpsilonGreedyPolicy(
          self.greedy_policy, 1, random_policy=self.random_policy
      )
      time_step = mock.MagicMock()
      for _ in range(5):
          policy.action(time_step)
      self.random_policy.action.assert_called_with(time_step)
      self.assertEqual(5, self.random_policy.action.call_count)
      self.assertEqual(0, self.greedy_policy.action.call_count)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing.absltest import mock
  from tf_agents.policies import py_epsilon_greedy_policy
  from tf_agents.trajectories import policy_step
  from tf_agents.trajectories import time_step
  from tf_agents.utils import test_utils
label_desc: Use image node_id 7 for calling the EpsilonGreedyPolicyTest obj's underlying member method code with example usage: obj.testActionAlwaysRandom() without return types