def METHOD_NAME(self):
    inp = (u'index.markdown\n'
           '\tsection1.markdown\n'
           '\t\tsubsection.markdown\n'
           '\tsection2.markdown')
    sitemap = self.parse(inp)
    all_sources = sitemap.get_all_sources()
    self.assertEqual(len(all_sources), 4)
    self.assertEqual(all_sources['index.markdown'],
                     ['section1.markdown', 'section2.markdown'])