import unittest

import silenttestrunner

from mercurial import pathutil

class dirstests(unittest.TestCase):

    def testdirs(self):

        for case, want in [

            (b'a/a/a', [b'a', b'a/a', b'']),

            (b'alpha/beta/gamma', [b'', b'alpha', b'alpha/beta']),

        ]:

            d = pathutil.dirs([])

            d.addpath(case)

            self.assertEqual(sorted(d), sorted(want))

    def testinvalid(self):

        with self.assertRaises(ValueError):

            d = pathutil.dirs([])

            d.addpath(b'a//b')

if __name__ == '__main__':

    silenttestrunner.main(__name__)