view tests/test-mdiff.py @ 45097:dff208398ede

tests: check that procutil.std{out,err}.write() returns correct result

On Windows, we currently don’t fully test the case when the stream is connected
to a TTY, but we test the child process side by connecting them to NUL, which
is recognized as a TTY by Python. To make the large write test a bit more
useful besides checking that it doesn’t crash, we can check that the write()
method returns the correct result.

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__)