Issue #19928: Implemented a test for repr() of cell objects.

diff --cc Lib/test/test_reprlib.py
Simple merge

diff --cc Misc/NEWS
index 4190158d2d83119197d64401a7caaba9fa3194f8,9026e754cbecefa54ecc5aff9901f9a6a5a34e57..5539899d97e38c49d87f06c48bd89caf39577365
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -136,8 -114,9 +136,10 @@@ IDL
  Tests
  -----
  
 -- Issue #19535: Fixed test_docxmlrpc when python is run with -OO.
+ - Issue #19928: Implemented a test for repr() of cell objects.
+ 
 +- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and
 +  test_statistics when python is run with -OO.
  
  - Issue #19926: Removed unneeded test_main from test_abstract_numbers.
    Patch by Vajrasky Kok.