util: eliminate the possibility of returning None from `versiontuple()`
This fixes the following error flagged by pytype:
File "/mnt/c/Users/Matt/hg/mercurial/extensions.py", line 228, in load: unsupported operand types for > [unsupported-operands]
Primitive types 'Optional[tuple]' and 'curver: Optional[tuple]' are not comparable.
Differential Revision: https://phab.mercurial-scm.org/D11473
from __future__ import absolute_import
from __future__ import print_function
import unittest
from mercurial import mdiff
class splitnewlinesTests(unittest.TestCase):
def test_splitnewlines(self):
cases = {
b'a\nb\nc\n': [b'a\n', b'b\n', b'c\n'],
b'a\nb\nc': [b'a\n', b'b\n', b'c'],
b'a\nb\nc\n\n': [b'a\n', b'b\n', b'c\n', b'\n'],
b'': [],
b'abcabc': [b'abcabc'],
}
for inp, want in cases.items():
self.assertEqual(mdiff.splitnewlines(inp), want)
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)