code: def test_set_start_state_list(self, check_state):
      model = MC(["b", "a"], [1, 2])
      check_state.return_value = True
      model.set_start_state([State("a", 0), State("b", 1)])
      model_state = [State("b", 1), State("a", 0)]
      check_state.assert_called_once_with(model, model_state)
      self.assertEqual(model.state, model_state)
  
imports: import sys
  import unittest
  import numpy
  from mock import call, patch
  from pandas import DataFrame
  from pgmpy.factors.discrete import State
  from pgmpy.models import MarkovChain
label_desc: Use image node_id 7 for calling the TestMarkovChain obj's underlying member method code with example usage: obj.test_set_start_state_list(check_state) without return types