commit 28c91631c24e53713ad0e8a2bbae716373f5e53d
author AMIR <31338382+amiremohamadi@users.noreply.github.com> Sun Dec 08 15:05:59 2019 +0330
committer Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Sun Dec 08 03:35:59 2019 -0800
tree a870b24a5128a4424e85cd2e4ad6693417e1c0c4
parent 00ada2c1d57c5b8b468bad32ff24fa14113ae5c7

bpo-38979: fix ContextVar "__class_getitem__" method (GH-17497)



now contextvars.ContextVar "__class_getitem__" method returns ContextVar class, not None. 


https://bugs.python.org/issue38979



Automerge-Triggered-By: @asvetlov

Lib/test/test_context.py

diff --git a/Lib/test/test_context.py b/Lib/test/test_context.py
index efd7319..b9e991a 100644
--- a/Lib/test/test_context.py
+++ b/Lib/test/test_context.py
@@ -38,9 +38,6 @@
 
         self.assertNotEqual(hash(c), hash('aaa'))
 
-    def test_context_var_new_2(self):
-        self.assertIsNone(contextvars.ContextVar[int])
-
     @isolated_context
     def test_context_var_repr_1(self):
         c = contextvars.ContextVar('a')
@@ -361,6 +358,10 @@
             tp.shutdown()
         self.assertEqual(results, list(range(10)))
 
+    def test_contextvar_getitem(self):
+        clss = contextvars.ContextVar
+        self.assertEqual(clss[str], clss)
+
 
 # HAMT Tests