Improve pickle tests for recursive data

[serhiy-storchaka]

BPO	42809
Nosy	@avassalotti, @serhiy-storchaka, @miss-islington
PRs	bpo-42809: Improve pickle tests for recursive data. #24060 [3.9] bpo-42809: Improve pickle tests for recursive data. (GH-24060) #24062 [3.8] bpo-42809: Improve pickle tests for recursive data. (GH-24060) #24063

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-01-02.10:47:08.853>
labels = ['3.8', 'type-feature', 'tests', '3.9', '3.10']
title = 'Improve pickle tests for recursive data'
updated_at = <Date 2021-01-02.17:53:55.516>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2021-01-02.17:53:55.516>
actor = 'miss-islington'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Tests']
creation = <Date 2021-01-02.10:47:08.853>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 42809
keywords = ['patch']
message_count = 4.0
messages = ['384220', '384230', '384233', '384234']
nosy_count = 3.0
nosy_names = ['alexandre.vassalotti', 'serhiy.storchaka', 'miss-islington']
pr_nums = ['24060', '24062', '24063']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue42809'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

[serhiy-storchaka]

The proposed PR extends tests for pickling recursive structures. The code is now more generic and covers more corner cases (found during work on bpo-36694).

[serhiy-storchaka]

New changeset a25011b by Serhiy Storchaka in branch 'master':
bpo-42809: Improve pickle tests for recursive data. (GH-24060)
a25011b

[miss-islington]

New changeset 2e8b1c9 by Miss Islington (bot) in branch '3.8':
bpo-42809: Improve pickle tests for recursive data. (GH-24060)
2e8b1c9

[miss-islington]

New changeset 39a7578 by Miss Islington (bot) in branch '3.9':
bpo-42809: Improve pickle tests for recursive data. (GH-24060)
39a7578