<!--
Description:  source title
Expect:       Channels[0]['title'] == 'visible name' and Channels[0]['title_plain'] == 'visible name' and Items[0]['channel_title_plain'] == 'visible name' and Items[0]['channel_title'] == 'visible name'
-->

<feed xmlns="http://www.w3.org/2005/Atom">
  <entry>
    <source>
      <title>visible name</title>
    </source>
  </entry>
  <planet:source xmlns:planet='http://planet.intertwingly.net/'>
    <title>visible name</title>
  </planet:source>
</feed>

