Moves avatar crop into function and adds test

bookwyrm/tests/views/test_user.py

@@ -1,5 +1,9 @@
 ''' test for app action functionality '''
+import pathlib
 from unittest.mock import patch
+from PIL import Image
+
+from django.core.files.base import ContentFile
 from django.template.response import TemplateResponse
 from django.test import TestCase
 from django.test.client import RequestFactory
@@ -97,3 +101,15 @@ class UserViews(TestCase):
         with patch('bookwyrm.broadcast.broadcast_task.delay'):
             view(request)
         self.assertEqual(self.local_user.name, 'New Name')
+
+
+    def test_crop_avatar(self):
+        ''' reduce that image size '''
+        image_file = pathlib.Path(__file__).parent.joinpath(
+            '../../static/images/no_cover.jpg')
+        image = Image.open(image_file)
+
+        result = views.user.crop_avatar(image)
+        self.assertIsInstance(result, ContentFile)
+        image_result = Image.open(result)
+        self.assertEqual(image_result.size, (120, 120))

bookwyrm/views/user.py

@@ -159,6 +159,20 @@ class EditUser(View):
         if 'avatar' in form.files:
             # crop and resize avatar upload
             image = Image.open(form.files['avatar'])
+            image = crop_avatar(image)
+
+            # set the name to a hash
+            extension = form.files['avatar'].name.split('.')[-1]
+            filename = '%s.%s' % (uuid4(), extension)
+            user.avatar.save(filename, image)
+        user.save()
+
+        broadcast(user, user.to_update_activity(user))
+        return redirect(user.local_path)
+
+
+def crop_avatar(image):
+    ''' reduce the size and make an avatar square '''
     target_size = 120
     width, height = image.size
     thumbnail_scale = height / (width / target_size) if height > width \
@@ -176,13 +190,4 @@ class EditUser(View):
     ))
     output = BytesIO()
     cropped.save(output, format=image.format)
-            ContentFile(output.getvalue())
-
-            # set the name to a hash
-            extension = form.files['avatar'].name.split('.')[-1]
-            filename = '%s.%s' % (uuid4(), extension)
-            user.avatar.save(filename, ContentFile(output.getvalue()))
-        user.save()
-
-        broadcast(user, user.to_update_activity(user))
-        return redirect(user.local_path)
+    return ContentFile(output.getvalue())