change cache on picture download

sas/tests/test_model.py

@@ -0,0 +1,48 @@
+from django.test import TestCase
+from model_bakery import baker, seq
+
+from core.baker_recipes import old_subscriber_user, subscriber_user
+from core.models import User
+from sas.models import Picture
+
+
+class TestPictureQuerySet(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        Picture.objects.all().delete()
+        cls.pictures = baker.make(
+            Picture,
+            is_moderated=True,
+            is_in_sas=True,
+            is_folder=False,
+            name=seq(""),
+            _quantity=10,
+            _bulk_create=True,
+        )
+        Picture.objects.filter(pk=cls.pictures[0].id).update(is_moderated=False)
+
+    def test_root(self):
+        root = baker.make(User, is_superuser=True)
+        pictures = list(Picture.objects.viewable_by(root))
+        self.assertCountEqual(pictures, self.pictures)
+
+    def test_subscriber(self):
+        subscriber = subscriber_user.make()
+        old_subcriber = old_subscriber_user.make()
+        for user in (subscriber, old_subcriber):
+            pictures = list(Picture.objects.viewable_by(user))
+            self.assertCountEqual(pictures, self.pictures[1:])
+
+    def test_not_subscribed_identified(self):
+        user = baker.make(
+            # This is the guy who asked the feature of making pictures
+            # available for tagged users, even if not subscribed
+            User,
+            first_name="Pierrick",
+            last_name="Dheilly",
+            nick_name="Sahmer",
+        )
+        user.pictures.create(picture=self.pictures[0])
+        user.pictures.create(picture=self.pictures[1])
+        pictures = list(Picture.objects.viewable_by(user))
+        assert pictures == [self.pictures[1]]