def test_farecalculationsystem(self):
     result = farecalculationsystem.calculare_fare(5,2) #test case to check fare for 5 passanger and general  class
     self.assertEqual(result, 1545)
 def test_farecalculationsystem3(self):
     result = farecalculationsystem.calculare_fare(5, 7)  # test case to check fare for 5 passanger and invalid  class choise
     self.assertEqual(result, 0)
 def test_farecalculationsystem6(self):
     result = farecalculationsystem.calculare_fare('three','one')  # test case to check fare for 5 passanger and invalid  class choise
     self.assertEqual(result, None)
 def test_farecalculationsystem2(self):
     result = farecalculationsystem.calculare_fare(5, 1)  # test case to check fare for 5 passanger and first class
     self.assertEqual(result, 2100)