assets manager: consider missing files as empty (#35397)

combo/apps/assets/views.py

@@ -80,7 +80,10 @@ class SlotAsset(object):
 
     def size(self):
         if self.asset:
-            return os.stat(self.asset.asset.path).st_size
+            try:
+                return os.stat(self.asset.asset.path).st_size
+            except OSError:
+                pass
         return None
 
     def src(self):

tests/test_manager.py

@@ -867,6 +867,11 @@ def test_asset_slots_management(app, admin_user):
         assert '>Delete<' in resp.text
         assert Asset.objects.filter(key='collectivity:cgu').count() == 1
 
+        # badly remove the file, manager page is still visible
+        os.unlink(Asset.objects.filter(key='collectivity:cgu')[0].asset.path)
+        resp = app.get('/manage/assets/')
+        assert '>CGU<' in resp.text
+
 
 def test_asset_export_import(app, admin_user):
     for path in ('uploads', 'assets', 'cache'):