gistfile1.pytb

Traceback (most recent call last):
  File "/Users/martin/Projects/md5checker/playground/md5checker/tests.py", line 15, in test_new_md5hash_derived_field
    self.assertEqual(m.md5, md5)
AssertionError: '' != '9a618248b64db62d15b300a07b00580b'
+ 9a618248b64db62d15b300a07b00580b

models.py

import hashlib
from django.db import models

class Hash(models.Model):
        created = models.DateTimeField(auto_now_add=True)
        updated = models.DateTimeField(auto_now=True, auto_now_add=True)
        class Meta(object):
            abstract = True


class MD5HashManager(models.Manager):

        def create(self, clear):
                obj = self.create(clear=clear)
                obj.md5 = hashlib.md5(clear).hexdigest()
                return obj

class MD5Hash(Hash):
    clear = models.CharField(max_length=128)
    md5 = models.CharField(max_length=32)

    objects = MD5HashManager()

    def __unicode__(self):
            return '<clear:{}> <md5:{}>'.format(
                            self.clear,
                            self.md5,
                            ) 
    def __str__(self):
            return self.__unicode__()

tests.py

import hashlib

from django.test import TestCase

from md5checker.models import MD5Hash
        
class TestMD5Hash(TestCase):
            
        def test_new_md5hash_derived_field(self):
                clear = b'supersecret'
                md5 = hashlib.md5(clear).hexdigest()
        
                m = MD5Hash(clear=clear)
                self.assertEqual(m.clear, clear)
                self.assertEqual(m.md5, md5)