Django test FileField using test fixtures

Django provides a great way to write tests on FileFields without mucking about in the real filesystem - use a SimpleUploadedFile.

from django.core.files.uploadedfile import SimpleUploadedFile

my_model.file_field = SimpleUploadedFile('best_file_eva.txt', b'these are the contents of the txt file')

It's one of django's magical features-that-don't-show-up-in-the-docs :). However it is referred to here.

You can override the MEDIA_ROOT setting for your tests using the @override_settings() decorator as documented:

from django.test import override_settings


@override_settings(MEDIA_ROOT='/tmp/django_test')
def test_post_solution_file(self):
  # your code here