from __future__ import absolute_import

import unittest

from mercurial import (

    encoding,

)

class IsasciistrTest(unittest.TestCase):

    asciistrs = [

        b'a',

        b'ab',

        b'abc',

        b'abcd',

        b'abcde',

        b'abcdefghi',

        b'abcd\0fghi',

    ]

    def testascii(self):

        for s in self.asciistrs:

            self.assertTrue(encoding.isasciistr(s))

    def testnonasciichar(self):

        for s in self.asciistrs:

            for i in range(len(s)):

                t = bytearray(s)

                t[i] |= 0x80

                self.assertFalse(encoding.isasciistr(bytes(t)))

if __name__ == '__main__':

    import silenttestrunner

    silenttestrunner.main(__name__)