Here is the model that I created to demonstrate the bug. If you create a new project with a new models.py file that looks like model file below, and try to run the test runner: python manage.py test
You'll see that 0 tests are run. If you remove the last line from the doctest and rerun the same command, the test runs and fails.
from django.db import models
class PublicationManager(models.Manager):
def get_printable_titles(self):
titles = map(lambda x: x.title, self.all())
printable_titles = '\n'.join(titles)
return printable_titles
class Publication(models.Model):
"""
# Create a couple of Publications.
>>> p1 = Publication(id=None, title='The Python Journal')
>>> p1.save()
>>> p2 = Publication(id=None, title='Science News')
>>> p2.save()
>>> p3 = Publication(id=None, title='Science Weekly')
>>> p3.save()
>>> Publication.objects.get_printable_titles()
u'The Python Journal\nScience News\nScience Weekly'
"""
title = models.CharField(max_length=30)
objects = PublicationManager()
This problem can be corrected by making the docstring a raw docstring (preceding the string with an 'r'). However, the current 'silently fail to run the test' creates a dangerous scenario where users are unlikely to know that their tests aren't being run.
