def test_comment_out(self):
tmpdir = tempfile.mkdtemp()
sourceslist = os.path.join(tmpdir, "sources.list")
open(sourceslist, "w")
apt_pkg.config.set("dir::etc::sourcelist", sourceslist)
apt_pkg.config.set("dir::state::lists", tmpdir)
view = Mock()
cdrom = AptCdrom(view, "./test-data-cdrom")
cdrom.add()
cdrom.comment_out_cdrom_entry()
for line in open(sourceslist):
self.assertTrue(line.startswith("#"))
self.assertEqual(len(open(sourceslist).readlines()), 2)
