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-rw-r--r--test/graph/test_resolve.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/graph/test_resolve.py b/test/graph/test_resolve.py
index 0918b02..b4d76c7 100644
--- a/test/graph/test_resolve.py
+++ b/test/graph/test_resolve.py
@@ -79,6 +79,9 @@ class TestFilter(unittest.TestCase):
{'http://example.com/you/invalid#1234', 'http://example.com/you/invalid#4321'})
resolver = Filter(schema)
+ # query can be None
+ self.assertIsNone(resolver(schema.node(ns.bsfs.Entity), None))
+
# immediate Is
self.assertEqual(resolver(schema.node(ns.bsfs.Entity),
ast.filter.Is(ents)),