End to end and stress tests

[arschles]

We currently have mostly unit tests inside this repository, along with a few integration tests (like one for the interceptor coming in #206). I propose that we add more testing strategies to this project, including:

• end to end: a test that installs the addon to a Kubernetes cluster along with KEDA and any other dependencies, installs an app and an HTTPScaledObject, and runs a quick suite of requests to trigger scale-from-zero, scale up, and scale back down to zero. this test should check that the app and the interceptor both scale properly, and that the external scaler, operator, and interceptor's admin endpoints all report the expected things (NOTE: KEDA does this, and there is a prototype of something similar in Multi-tenant interceptor and scaler #206)
• stress: a test that runs a large number of requests concurrently against an interceptor fleet, optionally for a large period of time. also possibly inspect internal admin endpoints along the way to ensure that metrics report as expected. the main purpose of this test is to ensure that, from the outside, requests get serviced as expected

[arschles]

@ajanth97 are you interested in implementing either one of these at some point?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.

[ajanth97]

@arschles sorry I just saw this. yeah will do when I get some time

[arschles]

sounds good @ajanth97 - thanks!

[v-shenoy]

I am currently working on this.