feat(auth): Emulator support for CreateCustomTokenAsync() API

firebase / firebase-admin-dotnet

Firebase Admin .NET SDK

https://firebase.google.com/docs/admin/setup

Apache License 2.0

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feat(auth): Emulator support for CreateCustomTokenAsync() API #293

Closed hiranya911 closed 3 years ago

hiranya911 commented 3 years ago

Implemented support for creating custom tokens for the emulator. In the emulator mode:

The alg header is set to none.
Signature is set to empty byte sequence.

Bulk of the changes are just refactoring the existing tests. I've updated CustomTokenTest to be more inline with other test classes like IdTokenVerificationTest, where we test behavior via parameterization, as opposed to creating FirebaseApp instances with different configurations.

hiranya911 commented 3 years ago

Custom tokens don't use a kid header regardless of the method used to sign.