From: Dong-hee Na <donghee.na92@gmail.com>
Date: Tue, 8 Oct 2019 15:59:10 +0000 (+0900)
Subject: test_dictviews: Add testcase for dictviews_sub (GH-16660)
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e53c5800df3d4a07c9596ed933d431f7f77a2980;p=python

test_dictviews: Add testcase for dictviews_sub (GH-16660)
---

diff --git a/Lib/test/test_dictviews.py b/Lib/test/test_dictviews.py
index 7cf0192502..8410e8b5c4 100644
--- a/Lib/test/test_dictviews.py
+++ b/Lib/test/test_dictviews.py
@@ -219,11 +219,13 @@ class DictSetTest(unittest.TestCase):
         self.assertEqual(origin.keys() & iter([1, 2]), {1})
         self.assertEqual(origin.keys() | iter([1, 2]), {1, 2, 3})
         self.assertEqual(origin.keys() ^ iter([1, 2]), {2, 3})
+        self.assertEqual(origin.keys() - iter([1, 2]), {3})
 
         items = origin.items()
         self.assertEqual(items & iter([(1, 2)]), {(1, 2)})
         self.assertEqual(items ^ iter([(1, 2)]), {(3, 4)})
         self.assertEqual(items | iter([(1, 2)]), {(1, 2), (3, 4)})
+        self.assertEqual(items - iter([(1, 2)]), {(3, 4)})
 
     def test_recursive_repr(self):
         d = {}