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utils: Tighten parse_comma_separated_list() contract further

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Now that callers are ensuring that `value` is not `None`, we can further
tighten the contract and remove the conditional to account when `None`
is passed-in for `value`.

Additionally, add a new test vector to account for when an empty string
is passed in, which would fail `if no value`.
This commit is contained in:
Eric N. Vander Weele 2019-07-28 10:39:27 -04:00
parent f01011a403
commit 1757bce321
2 changed files with 2 additions and 4 deletions
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1
tests/unit/test_utils.py
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@ -22,6 +22,7 @@ RELATIVE_PATHS = ["flake8", "pep8", "pyflakes", "mccabe"]
("E123,W234,,E206,,", ["E123", "W234", "E206"]),
("E123, W234,, E206,,", ["E123", "W234", "E206"]),
("E123,,W234,,E206,,", ["E123", "W234", "E206"]),
("", []),
])
def test_parse_comma_separated_list(value, expected):
"""Verify that similar inputs produce identical outputs."""