test: extend scenarios in test

tests/system/test_system.py

@@ -72,7 +72,7 @@ def setUpModule():
 def tearDownModule():
     keys = [entity.key for entity in Config.TO_DELETE]
     with Config.CLIENT.transaction():
-       Config.CLIENT.delete_multi(keys)
+        Config.CLIENT.delete_multi(keys)
 
 
 class TestDatastore(unittest.TestCase):
@@ -430,11 +430,18 @@ def test_query_paginate_with_offset(self):
         self.assertEqual(entities[2]["name"], "Arya")
 
     def test_query_paginate_with_large_offset(self):
-        page_query = self._base_query()
-        page_query.order = "appearances"
+        page_query = self.CLIENT.query(kind="Character")
+        page_query.add_filter("family", "=", "Stark")
+        page_query.add_filter("alive",  "=", False)
         offset = 1000 # This is greater than the number of entries.
         limit = 3
 
+        # Verify that with no offset there are results
+        iterator = page_query.fetch(limit=limit, offset=0)
+        page = six.next(iterator.pages)
+        entities_no_offset = list(page)
+        self.assertEqual(len(entities_no_offset), 3)
+
         # Offset beyond items. Verify no items found
         iterator = page_query.fetch(limit=limit, offset=offset)
         page = six.next(iterator.pages)