test_pprint relies on set/dictionary repr() ordering

[markshannon]

BPO	13907
Nosy	@markshannon, @swarmer, @phmc, @iritkatriel

^{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 = <Date 2020-11-22.18:41:54.123>
created_at = <Date 2012-01-29.22:45:26.925>
labels = ['3.8', 'tests', '3.9', '3.10']
title = 'test_pprint relies on set/dictionary repr() ordering'
updated_at = <Date 2020-11-22.18:41:54.122>
user = 'https://github.com/markshannon'

bugs.python.org fields:

activity = <Date 2020-11-22.18:41:54.122>
actor = 'rhettinger'
assignee = 'none'
closed = True
closed_date = <Date 2020-11-22.18:41:54.123>
closer = 'rhettinger'
components = ['Tests']
creation = <Date 2012-01-29.22:45:26.925>
creator = 'Mark.Shannon'
dependencies = []
files = []
hgrepos = []
issue_num = 13907
keywords = []
message_count = 3.0
messages = ['152272', '165837', '381611']
nosy_count = 4.0
nosy_names = ['Mark.Shannon', 'anton.barkovsky', 'pconnell', 'iritkatriel']
pr_nums = []
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue13907'
versions = ['Python 3.8', 'Python 3.9', 'Python 3.10']

[markshannon]

The function test_set_reprs() includes the comment:
"Consequently, this test is fragile and implementation-dependent"
Changing the dictionary iteration ordering breaks it.

[swarmer]

This test breaks now even in CPython. Remove it and be done with it?

[iritkatriel]

This test was since renamed to test_set_of_sets_reprs and is currently marked as @expectedfailure:

5184438