Ticket #6899: nonzero-queryset.diff

django/db/models/query.py

@@ -72 +72 @@
-                iter(self).next()
-            except StopIteration:
-                return False
-True
+bool(self._result_cache)
-
-    def __getitem__(self, k):
-        "Retrieve an item or slice from the set of results."

tests/modeltests/nonzero/models.py

@@ +1 @@
+"""
+43. Boolean evaluation of QuerySets
+
+This tests that QuerySet.__nonzero__ behaves consistently between caching.
+"""
+
+from django.db import models
+
+class Empty(models.Model):
+    pass
+
+__test__ = {'API_TESTS':"""
+>>> objects = Empty.objects.all()
+>>> bool(objects)
+False
+>>> bool(objects)
+False
+"""}