code: def test_DFA(self):
      transitions = {
          "a": {"1": "a", "0": "b"},
          "b": {"1": "b", "0": "a"},
      }
  
      final = ["a"]
      start = "a"
  
      self.assertEqual(
          False, DFA(transitions, start, final, "000111100")
      )
      self.assertEqual(
          True, DFA(transitions, start, final, "111000011")
      )
  
      transitions1 = {
          "0": {"0": "1", "1": "0"},
          "1": {"0": "2", "1": "0"},
          "2": {"0": "2", "1": "3"},
          "3": {"0": "3", "1": "3"},
      }
  
      final1 = ["0", "1", "2"]
      start1 = "0"
  
      self.assertEqual(
          False, DFA(transitions1, start1, final1, "0001111")
      )
      self.assertEqual(
          True, DFA(transitions1, start1, final1, "01010101")
      )
  
      transitions2 = {
          "0": {"a": "0", "b": "1"},
          "1": {"a": "0", "b": "2"},
          "2": {"a": "3", "b": "2"},
          "3": {"a": "3", "b": "3"},
      }
  
      final2 = ["3"]
      start2 = "0"
  
      self.assertEqual(
          False, DFA(transitions2, start2, final2, "aaabbb")
      )
      self.assertEqual(
          True, DFA(transitions2, start2, final2, "baabba")
      )
  
imports: from algorithms.automata import DFA
  import unittest
label_desc: Use image node_id 1 for calling the TestDFA obj's underlying member method code with example usage: obj.test_DFA() without return types