Tests for not in operator

tests/types/test_int_range.py

@@ -114,6 +114,22 @@ class TestIntRangeTypeOnPostgres(NumberRangeTestCase):
         )
         assert query.count()
 
+    @mark.parametrize(
+        'number_range',
+        (
+            [2, 5],
+            '0 - 2',
+            0
+        )
+    )
+    def test_not_in_operator(self, number_range):
+        self.create_building([1, 3])
+        query = (
+            self.session.query(self.Building)
+            .filter(~ self.Building.persons_at_night.in_([number_range]))
+        )
+        assert query.count()
+
     def test_eq_with_query_arg(self):
         self.create_building([1, 3])
         query = (