def test_square_root(self):
     test_data = CsvReader('/CSV_files/square_root.csv').data
     for row in test_data:
         self.assertEqual(
             self.calculator.subtract(row['Value 1'], row['Value 2']),
             int(row['Result']))
         self.assertEqual(self.calculator.result, int(row['Result']))
 def test_multiplication(self):
     test_data = CsvReader('/CSV_files/multiplication.csv').data
     for row in test_data:
         self.assertEqual(
             self.calculator.subtract(row['Value 1'], row['Value 2']),
             int(row['Result']))
         self.assertEqual(self.calculator.result, int(row['Result']))