Confirming token refresh in SwiftyDropbox

If you're using authorizeFromControllerV2, the SDK will take care of the rest for you automatically. It requests "offline" access, so it gets a refresh token, and uses that refresh token to automatically perform the refresh process to get new short-lived access tokens whenever needed, without requiring you to handle that in your own code. That process is done without user interaction.

If you want to check though, I expect you can peek inside the client using the debugger and look at the short-lived access token. You would need to check both before and after a particular call when a refresh is needed to actually see it change. I don't believe we explicitly log that anywhere in the client.

(Also, the SDK is open source, so you can follow through the code if you want, e.g., starting with authorizeFromControllerV2 here.)