There is also Charlesproxy which supports Protobuf.
But from my experience you use the code generator and trust the deserializer and serializer since they are unit tested.
So you can just unit test your methods and don’t have to look at the actual binary blob payload.
You trust that gRPC is battle tested and you can just test your code.
You would probably wrap the generated methods/objects/structs in your own domain model and unit test the mapping between them.
Using the objects from gRPC throughout your code directly does work but sometimes is not what you want to work with.
So I rather would introduce another boundary to the transport. But that is personal preference (in case I want to get rid of gRPC and don’t want to touch my business logic)
But from my experience you use the code generator and trust the deserializer and serializer since they are unit tested. So you can just unit test your methods and don’t have to look at the actual binary blob payload.
You trust that gRPC is battle tested and you can just test your code.
You would probably wrap the generated methods/objects/structs in your own domain model and unit test the mapping between them. Using the objects from gRPC throughout your code directly does work but sometimes is not what you want to work with.
So I rather would introduce another boundary to the transport. But that is personal preference (in case I want to get rid of gRPC and don’t want to touch my business logic)