commit f5b89afde1196ec9f74b7dc0333cec9bc4d4c2db
author Serhiy Storchaka <storchaka@gmail.com> Wed Jun 19 10:33:27 2019 +0300
committer GitHub <noreply@github.com> Wed Jun 19 10:33:27 2019 +0300
tree 2040a6819af4442fbeb15ed74a48c94b1bc2057b
parent 7edf8e50d1df1cab7b3462c836d4ce0be7d8b93b

bpo-37163: Deprecate passing argument obj of dataclasses.replace() by keyword. (GH-13877)

Lib/test/test_dataclasses.py

diff --git a/Lib/test/test_dataclasses.py b/Lib/test/test_dataclasses.py
index 53e8443..cb0e18c 100755
--- a/Lib/test/test_dataclasses.py
+++ b/Lib/test/test_dataclasses.py
@@ -3075,6 +3075,13 @@
         self.assertEqual(c1.x, 3)
         self.assertEqual(c1.y, 2)
 
+        self.assertRaises(TypeError, replace)
+        self.assertRaises(TypeError, replace, c, c)
+        with self.assertWarns(DeprecationWarning):
+            c1 = replace(obj=c, x=3)
+        self.assertEqual(c1.x, 3)
+        self.assertEqual(c1.y, 2)
+
     def test_frozen(self):
         @dataclass(frozen=True)
         class C: