auto testing for microsoft botframework

I'm working now on my first bot with Microsoft Bot Framework, with asp.net.

After manually testing with the bot emulator, I'm looking for the best method to create automatic testing for the bot.

Considering two problems:

1. What is the best tool to automate such tests?
2. What is the best method to test a dialog that can return different answers to the same input?

Does someone have experience in such tests?