bpo-37805: Add tests for json.dump(..., skipkeys=True) (pythonGH-15489)

https://bugs.python.org/issue37805

Automerge-Triggered-By: @methane
(cherry picked from commit 44cd86b)

Co-authored-by: Dong-hee Na <[email protected]>

Author: corona10

Lib/test/test_json/test_dump.py

@@ -12,6 +12,16 @@ def test_dump(self):
     def test_dumps(self):
         self.assertEqual(self.dumps({}), '{}')
 
+    def test_dump_skipkeys(self):
+        v = {b'invalid_key': False, 'valid_key': True}
+        with self.assertRaises(TypeError):
+            self.json.dumps(v)
+
+        s = self.json.dumps(v, skipkeys=True)
+        o = self.json.loads(s)
+        self.assertIn('valid_key', o)
+        self.assertNotIn(b'invalid_key', o)
+
     def test_encode_truefalse(self):
         self.assertEqual(self.dumps(
                  {True: False, False: True}, sort_keys=True),

Misc/NEWS.d/next/Tests/2019-08-25-19-51-46.bpo-37805.Kl1sti.rst

@@ -0,0 +1 @@
+Add tests for json.dump(..., skipkeys=True). Patch by Dong-hee Na.