'C{asTextMode} on a L{unicode}-mode L{FilePath} returns the same
L{unicode}-mode L{FilePath}.'

def test_asTextModeFromUnicode(self):

    fp = filepath.FilePath(u'./tmp')
    newfp = fp.asTextMode()
    self.assertIs(fp, newfp)
    self.assertIsInstance(newfp.path, unicode)
