Do I need a COVID test before leaving Thailand, and how can I get one?

I'm closing comments, since I can see this post going sideways really fast. If there's more information to add, please message me or one of the other mods.

To leave Thailand, you need to do the following:

-IF You have an extension of stay:

IF you are planning on returning, to get a re-entry permit from the immigration office. IF you are not returning, to cancel your Extension of Stay and work permit (if it applies to you)

-IF you are currently on amnesty:

You do not have to do anything to leave Thailand.

-IF you are flying to a country where a COVID-19 test is required, and you're asking where to get a COVID-19 test, post this question in a local Facebook group (i.e. in a Bangkok related group, or Chang Mai related group, etc...)

There is no requirement for a COVID test to leave Thailand.

But the country where you are going may require one.

Leave which country? Thailand?