python / python/cpython

MagicMock specialisation instance can no longer be passed to new MagicMock instance

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3.8 (EOL) 3.9 (EOL) stdlib
Dominant language
Python
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Description

BPO 39578
Nosy @cjw296, @voidspace, @elenaoat, @lisroach, @mariocj89, @tirkarthi

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

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-02-07.09:38:41.606>
labels = ['3.8', 'library', '3.9']
title = 'MagicMock specialisation instance can no longer be passed to new MagicMock instance'
updated_at = <Date 2020-02-11.00:03:09.479>
user = 'https://bugs.python.org/FrankHarrison'

bugs.python.org fields:

activity = <Date 2020-02-11.00:03:09.479>
actor = 'Elena.Oat'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-02-07.09:38:41.606>
creator = 'Frank Harrison'
dependencies = []
files = []
hgrepos = []
issue_num = 39578
keywords = []
message_count = 5.0
messages = ['361552', '361554', '361657', '361723', '361763']
nosy_count = 7.0
nosy_names = ['cjw296', 'michael.foord', 'Elena.Oat', 'lisroach', 'mariocj89', 'xtreak', 'Frank Harrison']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue39578'
versions = ['Python 3.8', 'Python 3.9']

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The issue names no source file, test, or reproduction; start by reviewing the linked BPO issue 39578 and its five-message history. Identify the MagicMock entry point involved and add a regression test showing that a specialised MagicMock instance can be passed to a new MagicMock instance without failure.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
testing-qa
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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