RAF and DP...how to test before publishing or ?

You will need to contact Roku and request the report be emailed to you (available daily, weekly and monthly).   At this time, that's the only way to know how many ads are being played via Roku Ad Network.

Okay thank you. 

But how do I know the code I prepare is correct and working before the ads begin running? For example, on one of the short videos (thats why it only have 158 on this cut of snippet of code) I have it as the following. And, for series:episodes I am guessing that the adBreaks would also be added after "duration".

	"releaseDate": "2018-02-12",
			"content": {
				"dateAdded": "2018-02-12T14:14:54.431Z",
				"captions": [],
				"duration": 158,
				"adBreaks": [
					"00:00:00",
					"00:00:53"
				],

Json is not positional. It doesn't make a difference where you put the tags as long as they are present.

Can you explain what your concerns are?

I think they are asking if the coding is proper for adBreaks, which, I suppose is a mix of what everyone said in a way. If the coding was incorrect it would likely be rejected, however the only way to tell they are firing is via the RAF reports. Although you could also watch your own channel & episodes to make sure they are working once its approved. Could help ensure & troubleshoot. Keep in mind though just because adBreaks are listed doesn't mean ads will definitely air based upon available inventory sold. 

Thank you all. I figured out what I need from your replies which is it would be rejected if the coding wasn't proper in the first place.

Thanks again for always helping me. I appreciate it.