Mercurial > hg
view tests/test-mdiff.py @ 36146:29dd37a418aa
bdiff: write a native version of splitnewlines
./hg perfunidiff mercurial/manifest.py 0 --count 500 --profile before:
! wall 0.309280 comb 0.350000 user 0.290000 sys 0.060000 (best of 32)
./hg perfunidiff mercurial/manifest.py 0 --count 500 --profile after:
! wall 0.241572 comb 0.260000 user 0.240000 sys 0.020000 (best of 39)
so it's about 20% faster. I hate Python. I wish we could usefully
write this in Rust, but it doesn't look like that's realistic without
using the cpython crate, which I'd still like to avoid.
Differential Revision: https://phab.mercurial-scm.org/D1973
author | Augie Fackler <augie@google.com> |
---|---|
date | Thu, 25 Jan 2018 21:16:28 -0500 |
parents | 1ab7b16c9437 |
children | 58c1368ab629 |
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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 = {'a\nb\nc\n': ['a\n', 'b\n', 'c\n'], 'a\nb\nc': ['a\n', 'b\n', 'c'], 'a\nb\nc\n\n': ['a\n', 'b\n', 'c\n', '\n'], '': [], 'abcabc': ['abcabc'], } for inp, want in cases.iteritems(): self.assertEqual(mdiff.splitnewlines(inp), want) if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)