old_contents: import unittest
  from src import rules
  
  class TestRules(unittest.TestCase):
  	def test_good_value_1(self):
  		rules_obj = rules.Rules()
  		result = rules_obj.convertCharToInt('1')
  		self.assertEqual(result, 1)
  
  	def test_good_value_3(self):
  		rules_obj = rules.Rules()
  		result = rules_obj.convertCharToInt('3')
  		self.assertEqual(result, 3)
  
  	def test_upper_value_10(self):
  		rules_obj = rules.Rules()
  		result = rules_obj.convertCharToInt('10')
  		self.assertEqual(result, 0)
  
  	def test_lower_value_5(self):
  		rules_obj = rules.Rules()
  		result = rules_obj.convertCharToInt('-5')
  		self.assertEqual(result, 0)
  
  	def test_bad_value(self):
  		rules_obj = rules.Rules()
  		result = rules_obj.convertCharToInt('qq')
  		self.assertEqual(result, 0)
new_contents: """ Tests for the rules module """
  
  import unittest
  from src import rules
  
  class TestRules(unittest.TestCase):
      """ Tests for the rules module """
  
      def test_good_value_1(self):
          """ Test a known good value"""
          rules_obj = rules.Rules()
          result = rules_obj.convertCharToInt('1')
          self.assertEqual(result, 1)
  
      def test_good_value_3(self):
          """ Test a known good value"""
          rules_obj = rules.Rules()
          result = rules_obj.convertCharToInt('3')
          self.assertEqual(result, 3)
  
      def test_upper_value_10(self):
          """ Test a value that should be too high"""
          rules_obj = rules.Rules()
          result = rules_obj.convertCharToInt('10')
          self.assertEqual(result, 0)
  
      def test_lower_value_5(self):
          """ Test a value that should be too low"""
          rules_obj = rules.Rules()
          result = rules_obj.convertCharToInt('-5')
          self.assertEqual(result, 0)
  
      def test_bad_value(self):
          """ Test a value that isn't an int"""
          rules_obj = rules.Rules(debug=True)
          result = rules_obj.convertCharToInt('qq')
          self.assertEqual(result, 0)
  
subject: Add docstrings to rules unit tests