Add tests for embedded shortcodes
Add tests for embedded shortcodes

Fixes #1956
Closes #2204

gohugoio/hugo,jygastaud/hugo,anthonyfok/hugo,fedelibre/hugo,bogem/hugo,anthonyfok/hugo,mitchchn/hugo,jygastaud/hugo,mitchchn/hugo,anthonyfok/hugo,gohugoio/hugo,fedelibre/hugo,tischda/hugo,mdhender/hugo,Zenithar/hugo,mdhender/hugo,tubo028/hugo,tischda/hugo,digitalcraftsman/hugo,mdhender/hugo,fedelibre/hugo,MarkDBlackwell/hugo,abourget/hugo,ffrizzo/hugo,digitalcraftsman/hugo,mayah/hugo,MarkDBlackwell/hugo,abourget/hugo,vbatoufflet/hugo,mdhender/hugo,ffrizzo/hugo,Zenithar/hugo,melo/hugo,vbatoufflet/hugo,fedelibre/hugo,bogem/hugo,mayah/hugo,gohugoio/hugo,melo/hugo,tubo028/hugo