Double follow on redeeming an invite by an already followed feed

[irisdelaluna]

To reproduce:

1. create new identity;
2. start server fresh;
3. follow feed A;
4. generate an invite with sbotcli call invite.create;
5. send that invite to the owner of feed A, let it be redeemed.
6. see two follow messages on your feed, feed A is being followed twice.

[cryptix]

Which client used the invite in this case?

[irisdelaluna]

@cryptix Patchwork

[cryptix]

I see, okay. I think there is retry logic if something goes wrong in patchwork. Ideally there should be more e2e scenarios in the tests folder of this implementation. Testing against ssb-server would be enough, no need to boot patchwork.

To stop the double follows you could add a graph lookup here.