Merge pull request #14 from codesyntax/fix-control-digit-calculation

Fix control digit calculation

HISTORY.rst

@@ -5,6 +5,9 @@ History
 1.0b6 (unreleased)
 ------------------
 
+- Fix control digit calculation
+  [erral]
+
 - Document new extra parameters for logos and XSLT template.
   [erral]
 

pymipago/utils.py

@@ -41,7 +41,7 @@ def _calculate_reference_number_with_control_digits_notebook_60(sender, referenc
         - Divide e by 97 and take the decimal values.
         - f: take the first 2 decimal values (add a 0 as a second digit if
             the division result creates just one decimal)
-        - g: deduct f from 100.
+        - g: deduct f from 99.
         - Concatenate the reference number and g and create a 12 digit value
     """
     if len(reference_number) != 10:
@@ -55,7 +55,7 @@ def _calculate_reference_number_with_control_digits_notebook_60(sender, referenc
     _, decimals = str(division_result).split('.')
 
     first_two_decimals = '{:0<2}'.format(decimals)[:2]
-    control_digits = 100 - int(first_two_decimals)
+    control_digits = 99 - int(first_two_decimals)
 
     return '{reference_number}{control_digits}'.format(
         reference_number=reference_number, control_digits=control_digits)

tests/test_utils.py

@@ -43,7 +43,7 @@ def test_calculate_reference_number_with_control_digits_notebook_60(self):
         else:
             first_two_decimals = decimals[:1] + '0'
 
-        control_digits = 100 - int(first_two_decimals)
+        control_digits = 99 - int(first_two_decimals)
         value = '{}{}'.format(reference_number, control_digits)
 
         calculated_value = _calculate_reference_number_with_control_digits_notebook_60(  # noqa