How can I locally test Webhooks API?

I'm currently integrating Braintree as payment system on my server. Now I realize that testing the Webhooks is quite problematic since my server is not public at the moment.

Is there a way for me to test the Webhooks functionality locally without the need of getting my server online?

One of the reason is money, since I'd have to pay for the deployment of my server. Another reason is simply the amount of time it takes to deploy the whole thing - and how would I debug that?