Test Idempotent API Endpoints against Node in CI, using Example Calls in Documentation

[adamkrellenstein]

Check performance when we do—make sure latency is below a certain threshold.

@ouziel-slama this seem reasonable?

[ouziel-slama]

yeah definitely that’s what we should do! just connect our Blueprint to a Dredd.. but it's not simple :) because most of our endpoints are not idempotent and often require a context which expires.. For example to compose a BTCPay you need a valid order match.. ( To generate the doc, I cheated and commented out checks in the code).
A priori to be able to systematically test all endpoints we would need a regtest node where we reload fixtures before each test..

[adamkrellenstein]

hm yeah. okay maybe in version 1 of this, we just check the idempotent ones?

[ouziel-slama]

yeah sounds good!

[adamkrellenstein]

See #1654

[ouziel-slama]

done here #1751
Only compose, bitcoin, mempool and / routes are not tested with dredd .
See dredd.yml automatically generated with the blueprint doc.