unittest assertSequenceEqual can lead to Difflib.compare() crashing on mostly different sequences

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Évaluation

Difficulté
3/5
Temps estimé
1-2 jours
Accessibilité débutants
38/100
Type d'issue
Bug
Clarté
Plutôt claire
Activité
À l'abandon
Stack technique
python
Domaine
testing-qa

Piste de recherche

Start by reproducing the failure described in diff_bug34.py through unittest.assertSequenceEqual and inspect the related difflib.compare() behavior. Identify the existing unittest and difflib tests covering sequence comparison, then add coverage for the mostly different sequences so the crash is prevented and the regression is verified.

Rédigé par le modèle d'indexation à partir du texte de l'issue.

Description

3.7 (EOL) 3.8 (EOL) stdlib type-bug
BPO 21253
Nosy @tim-one, @terryjreedy, @gpshead, @bitdancer, @jftuga, @nnja, @ilevkivskyi
Files
  • diff_bug34.py
    		•

    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 2014-04-16.15:54:46.162>
labels = ['3.7', '3.8', 'type-bug', 'library']
title = 'unittest assertSequenceEqual can lead to Difflib.compare() crashing on mostly different sequences'
updated_at = <Date 2019-03-08.15:56:27.847>
user = 'https://github.com/nnja'

    bugs.python.org fields:

    activity = <Date 2019-03-08.15:56:27.847>
actor = 'Ernesto Eduardo Medina N\xc3\xba\xc3\xb1ez'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2014-04-16.15:54:46.162>
creator = 'nnja'
dependencies = []
files = ['34911']
hgrepos = []
issue_num = 21253
keywords = []
message_count = 7.0
messages = ['216479', '216809', '216816', '216830', '216835', '248905', '337498']
nosy_count = 8.0
nosy_names = ['tim.peters', 'terry.reedy', 'gregory.p.smith', 'r.david.murray', 'jftuga', 'nnja', 'levkivskyi', 'Ernesto Eduardo Medina N\xc3\xba\xc3\xb1ez']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue21253'
versions = ['Python 2.7', 'Python 3.6', 'Python 3.7', 'Python 3.8']

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