code: def test_loss_state(self):
      opt = Mock()
  
      y_pred = "yp"
      y_true = "yt"
  
      def loss_sig(state):
          return None
  
      crit = create_autospec(loss_sig)
  
      state = {
          torchbearer.X: None,
          torchbearer.MODEL: lambda x: y_pred,
          torchbearer.Y_TRUE: y_true,
          torchbearer.CRITERION: crit,
          torchbearer.LOSS: None,
          torchbearer.OPTIMIZER: opt,
          torchbearer.CALLBACK_LIST: MagicMock(),
          torchbearer.BACKWARD_ARGS: {},
      }
  
      closure = self.closure
      closure(state)
      self.assertDictEqual(crit.call_args[0][0], state)
  
imports: import unittest
  from mock import Mock, MagicMock, create_autospec, patch
  import torch
  import torchbearer
  from torchbearer.bases import Metric, Callback, base_closure
  from torchbearer.metrics.primitives import CategoricalAccuracy
label_desc: Use image node_id 9 for calling the TestApexCrit obj's underlying member method code with example usage: obj.test_loss_state() and returns: None