Django manually assign file to model

django_test_read_file

    def test_picture_path_is_correct(self):
        obj = self.create_obj()
        abs_path = os.path.join(settings.TEST_MEDIA_ASSETS_FOLDER, 'profile_picture_1280.png')
        obj.picture.save('filename.png', ImageFile(open(abs_path, 'rb'))) # this line reads image and store it as binary
        obj.save()
        self.assertTrue(os.path.isfile(obj.picture.path))