tests/test-mdiff.py

tests: avoid referring to pvec in demandimport test

Nothing else currently uses pvec, so we may want to delete it (but
Augie Fackler says he may want to use it). To enable deletion, this
patch replaces it by the error module in the demandimport test (any
module works). However, since the error module had already been loaded
at this point in the test (via the util module), I moved it earlier in
the test so it's still not loaded (although I'm not sure if that's
even relevant to the test).

Differential Revision: https://phab.mercurial-scm.org/D2287

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__)