Fixed QuerySetNoCache.count() caching (#410)

tests/queryset/queryset.py

@@ -3483,6 +3483,27 @@ class QuerySetTest(unittest.TestCase):
             people.count()  # count is cached
             self.assertEqual(q, 1)
 
+    def test_no_cached_queryset(self):
+        class Person(Document):
+            name = StringField()
+
+        Person.drop_collection()
+        for i in xrange(100):
+            Person(name="No: %s" % i).save()
+
+        with query_counter() as q:
+            self.assertEqual(q, 0)
+            people = Person.objects.no_cache()
+
+            [x for x in people]
+            self.assertEqual(q, 1)
+
+            list(people)
+            self.assertEqual(q, 2)
+
+            people.count()
+            self.assertEqual(q, 3)
+
     def test_cache_not_cloned(self):
 
         class User(Document):