How to check image loading with unit-tests/integration tests?

Question

Django

Hello. Now I'm writing a "straightforward check" of the model. Those. I create a model with certain attributes and check that this model has those attributes.
There is a question on two points:
1) How to check the loading of pictures?
2) How to check m2m

class Article_can_save_models_data(TestCase):

    def article_can_call_for_its_attr(self):

        article = Article.objects.create(
            article_categore = 'отношения',
            seo_title = 'seo заголовок статьи',
            seo_description = 'seo описание статьи',
            small_description = 'малое описание',
            title = 'заголовок статьи',
            # article_image = False,
            # article_smallimage = False,
            article_body = 'тело статьи',
            thumbnumber = 10,
            # main = "", M2M
            course1 = 1,
            course2 = 2,
            # likedone = "" FKey
        )

        self.assertEqual(article.get_plus(), '+10')
        self.assertEqual(article.article_categore, 'отношения')
        self.assertEqual(article.seo_title, 'seo заголовок статьи')
        self.assertEqual(article.seo_description, 'seo описание статьи')
        self.assertEqual(article.title, 'заголовок статьи')
        self.assertEqual(article.article_body, 'тело статьи')
        self.assertEqual(article.thumbnumber, 10)
        self.assertEqual(article.course1, 1)
        self.assertEqual(article.course2, 2)

Answer 1

Selenium and run the complete script, from logging in to the site, to uploading images, and verifying that it exists.
PS It makes no sense to test Article.objects.create if you have objects - not a custom manager with an overridden create method.