def test_hash(self):
"""
Tests that hash function is a bijection
"""
for i in xrange(len(PRIMES)-1):
num = 56 ** i + random.randint(1, 50)
self.assertEqual(mmi_unhash(mmi_hash(num)), num)
def default_redirect(request, short):
if len(short) < MIN_LENGTH:
return HttpResponseNotFound()
try:
pk = mmi_unhash(short)
except:
raise Http404
url = get_object_or_404(Url, id=pk)
ip = get_client_ip(request)
ua_text = request.META.get('HTTP_USER_AGENT')
ua_hash = hashlib.sha1(ua_text).hexdigest()
ua, created = UserAgent.objects.get_or_create(hash=ua_hash,
defaults={'text': ua_text})
new_access_log = AccessLog.objects.create(url=url, ip=ip,
useragent=ua)
url.access_logs.add(new_access_log)
url.access_count += 1
url.save()
return redirect(url.origin)
