Overlapping tests between list_tests and seq_tests

[DimitrisJim]

BPO	29912
Nosy	@brettcannon, @DimitrisJim
PRs	bpo-29912: Remove overlapping tests in list_tests and seq_tests #847

^{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 2017-03-27.19:36:11.034>
created_at = <Date 2017-03-26.23:42:37.128>
labels = ['type-bug', 'tests']
title = 'Overlapping tests between list_tests and seq_tests'
updated_at = <Date 2017-03-27.19:36:11.034>
user = 'https://github.com/DimitrisJim'

bugs.python.org fields:

activity = <Date 2017-03-27.19:36:11.034>
actor = 'brett.cannon'
assignee = 'none'
closed = True
closed_date = <Date 2017-03-27.19:36:11.034>
closer = 'brett.cannon'
components = ['Tests']
creation = <Date 2017-03-26.23:42:37.128>
creator = 'Jim Fasarakis-Hilliard'
dependencies = []
files = []
hgrepos = []
issue_num = 29912
keywords = []
message_count = 3.0
messages = ['290550', '290590', '290638']
nosy_count = 2.0
nosy_names = ['brett.cannon', 'Jim Fasarakis-Hilliard']
pr_nums = ['847']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue29912'
versions = []

[DimitrisJim]

Seems the CommonTests class defined in list_tests duplicates the testing performed by seq_tests.CommonTests in the following functions:

test_index, test_count

Additionally, a part of test_imul from list_tests.CommonTests can be moved to seq_tests.CommonTests. (specifically, up until self.assertEqual(u, self.type2test([]))).

Am I missing some non-obvious thing here or can I safely remove the two test functions in list_tests.CommonTests and move (while also adding a super call) part of test_imul from list_tests.CommonTests to test_imul in seq_tests.CommonTests?

Some links:

[1a] seq_tests test_index:

cpython/Lib/test/seq_tests.py

Line 363 in 1e73dbb

def test_index(self):

[1b] list_tests test_index:

cpython/Lib/test/list_tests.py

Line 376 in 1e73dbb

def test_index(self):

[2a] seq_tests test_count:

cpython/Lib/test/seq_tests.py

Line 344 in 1e73dbb

def test_count(self):

[2b] list_tests test_count:

cpython/Lib/test/list_tests.py

Line 357 in 1e73dbb

def test_count(self):

[3a] seq_tests test_imul:

cpython/Lib/test/seq_tests.py

Line 300 in 1e73dbb

def test_imul(self):

[3b] list_tests test_imul:

cpython/Lib/test/list_tests.py

Line 550 in 1e73dbb

def test_imul(self):

[DimitrisJim]

Correction: test_index *partially* duplicates the base class method. It too can be modified to use super like test_imul.

[brettcannon]

New changeset d702c50 by Brett Cannon (Jim Fasarakis-Hilliard) in branch 'master':
bpo-29912: Remove redundant tests in list_tests that are found in seq_tests (GH-847)
d702c50