Add a few more unit tests.
Add a few more unit tests.

holomorph/elfeed,algernon/elfeed,skeeto/elfeed,jinnovation/elfeed,algernon/elfeed,holomorph/elfeed,skeeto/elfeed,emacsmirror/elfeed,daimrod/elfeed,abo-abo/elfeed,seblemaguer/elfeed,jinnovation/elfeed,seblemaguer/elfeed,emacsmirror/elfeed,daimrod/elfeed