Detecting Bits donated using a chatbot

OK I understand, and there might be different ways to fetch the cheering event, but the most important question remained unanswered, how do I actually test this?

Since activating bits on a twitch account can only be done if it is in the affiliate program, it is impossible for me to actually test a cheering event?
I also cannot find any sandbox or testing environment to be able to simulate a cheering event.

I could do a huge code in my game for a cool cheering detection system, but if it can never be actually tested it will most likely not even work.

Say PayPal for example, you can test all events there through a sandbox, like donating money or buying an in-game item.
But I have not found such a system to generate cheering events in Twitch.