Images for testing

Writing tests which involve images can problematic as you will need to store images in your project just for testing. This solution shows how you can create an image to be used just while testing.

Problem

You need to create an uploaded image for testing.

Solution

Use SimpleUploadedFile and populate it with a temp image.

# Articles:
# https://stackoverflow.com/questions/26298821/django-testing-model-with-imagefield
# https://stackoverflow.com/questions/8611651/generate-in-memory-image-for-django-testing/22824942
# https://swapps.com/blog/testing-files-with-pythondjango/

from django.core.files.uploadedfile import SimpleUploadedFile

small_gif = (
    b'\x47\x49\x46\x38\x39\x61\x01\x00\x01\x00\x00\x00\x00\x21\xf9\x04'
    b'\x01\x0a\x00\x01\x00\x2c\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02'
    b'\x02\x4c\x01\x00\x3b'
)
uploaded = SimpleUploadedFile('small.gif', small_gif, content_type='image/gif')