Auth Correctness Test

how to effectively verify the correctness of auth for many online using third-party apps?

1. Multiple apps automatically test.
2. Many apps meantime call getAuthToken function
3. Verify the validity of token using okhttp library

Solution:
1/2. I just manually test the correctness of authenticator with two apps that has different signature. It's ok!
3. already use the okhttp to verify the token's validity.