[1.0.X] Be nice to buildbots: switched `modeltests/files` to use a proper...

and where files should be stored.

"""

import shutil

import tempfile

from django.db import models

from django.core.files.base import ContentFile

from django.core.files.storage import FileSystemStorage

from django.core.cache import cache

temp_storage = FileSystemStorage(location=tempfile.gettempdir())

temp_storage_location = tempfile.mkdtemp()

temp_storage = FileSystemStorage(location=temp_storage_location)

# Write out a file to be used as default content

temp_storage.save('tests/default.txt', ContentFile('default content'))

>>> obj4.random

<FieldFile: .../random_file>

# Clean up the temporary files.

# Clean up the temporary files and dir.

>>> obj1.normal.delete()

>>> obj2.normal.delete()

>>> obj3.default.delete()

>>> obj4.random.delete()

>>> shutil.rmtree(temp_storage_location)

"""}