def validate_contests(self):
expected_contest_slugs = self.contests
contests = Contest.objects.filter(election_id=self.election_id)
expected = len(expected_contest_slugs)
count = contests.count()
assert count == expected, (
"There should be %d contests, but there are %d" %
(expected, count))
for slug in expected_contest_slugs:
try:
contests.get(slug=slug)
except Contest.DoesNotExist:
raise Contest.DoesNotExist("No contest with slug '%s' found" %
slug)
