About [[MediaWiki:Narayam-ta-99/hi]]

Ok, it seems to be working with this message. Is there a way to know if this will work with a particular message without having to ask here for each one? Thanks.

Not really, unless you are not scared of reading the program code. Or you can test if you can see the message in real action here in translatewiki.net (don't trust the preview of translations).

Testing here wouldn't be possible for all extensions (or even for core for that matter), since:

1. Most messages don't contain precise documentation for where to find them
2. Some messages are used in places with restricted access, which will not be accessible to translators here

I'm not excited about having to learn programming languages for translating.

So there's no solution for this currently? If not, should I go ahead and file a bug for this in BZ? Is TWN covered there?

Even worse. Since this wiki has only one specific one of the various possible general settings, you would only be able to see that your test apears to work for this specific one. This is not really sufficient.

I believe that such tests could be made on LABS, but I am not certain. I am still learning about it.