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Changes between Initial Version and Version 1 of Ticket #28148

-              initial
+              v1
 The following test code snippet stopped working on django 1.11 raising a validation error because the posted image has not a valid file extension:
+```
+{{{
 class Test(TestCase):
     def test_post(self):
 …
+        }
         response = self.client.post(url, data=data)
+```
+}}}
 The view takes the data and fill the following ModelForm that fails validation:
+```
+{{{
 class Image(models.Model):
     image = models.ImageField(_(u'Immagine'), upload_to='image')
 …
     class Meta:
         model = Image
+```
+}}}
 As a workaround, adding a name attribute to the BytesIO object make the code work again:
+```
+{{{
         img.name = 'ciao.jpg'
+```
+}}}