I have my tests for a Django application in a tests directory:
my_project/apps/my_app/
├── __init__.py
├── tests
│ ├── __init__.py
│ ├── field_tests.py
│ └
To make nose realize where your apps are add these to the top of manage.py
import os, site
ROOT = os.path.dirname(os.path.abspath(__file__))
path = lambda *a: os.path.join(ROOT, *a)
site.addsitedir(path('apps'))
Since then you can use
python manage.py test my_app.tests.storage_tests:TestCase.test_name