def test_functional(self):

->     temp = py.test.ensuretemp('TestTempLinker.test_functional')

       l = TempLinker()

       bar = temp.ensure('foo/bar.html', file=True)

       baz = temp.ensure('foo/baz.html', file=True)

       l.set_link(baz.strpath, baz.relto(temp))

       bar.write('<a href="%s">baz</a>' % (l.get_lazyhref(baz.strpath),))

       l.replace_dirpath(temp)

       assert bar.read() == '<a href="baz.html">baz</a>'