Validating embedded video on Unit Test

Is this a requirement to get a theme into the repository? I read one solution that said to change the embed tag to an object tag, but not sure where that code comes from.

I looked at that post in the unit test and it just uses that embed feature from the Media settings. Turning that off just prints the web address. I checked in both HTML & Visual mode.

I also tried {embed}urlgoesheremmmbacon{/embed} and that just printed {embed}urlgoesheremmmbacon{/embed}