Django testing model with ImageField

Question

I need to test the Photo model of my Django application. How can I mock the ImageField with a test image file?

tests.py

class PhotoT         


        

Answer 1

You can do a few additional things to (1) avoid having to keep a dedicated test image around, and (2) ensure that all test files created during testing are deleted right after:

import shutil
import tempfile

from django.core.files.uploadedfile import SimpleUploadedFile
from django.test import TestCase, override_settings

MEDIA_ROOT = tempfile.mkdtemp()

@override_settings(MEDIA_ROOT=MEDIA_ROOT)
class MyTest(TestCase):

    @classmethod
    def tearDownClass(cls):
        shutil.rmtree(MEDIA_ROOT, ignore_errors=True)  # delete the temp dir
        super().tearDownClass()

    def test(self):
        img = SimpleUploadedFile('test.jpg', b'whatevercontentsyouwant')
        # ^-- this will be saved in MEDIA_ROOT
        # do whatever ...