feat: Bootstrap webhook/component/integration/performance tests

[RealAnna]

#173

Research results

While DT uses fakeclients mostly, all other operator repo uses kubebuilder and ginkgo combo for E2E tests.
An example of suite test with configs file to setup testenv is here
Example of webhook test is here
An example of integration/Component test is here
Example integration test with kuttl

Kubebatch scheduler uses ginkgo also for performance/load tests https://github.com/kubernetes-sigs/kube-batch/tree/master/test/kubemark

Poc Description

In this Poc there are examples made for the operator and for the scheduler. Unit test uses a fakeclient while E2E/Component and load tests use kubebuilder+ testenv+ ginkgo. An integration test for the full cluster uses kuttl.

A simple report is generated for component and e2e tests:

suite_test.go  | passed
KeptnAppController should update the status of the CR  | passed
KeptnAppController should update the spans | passed
[Feature:Performance] Load KeptnAppController should create the app version CR | passed

Also a simple load test report :
Overall AppVersions created 100/100 Creation times: [2022-10-28 12:45:04.3396049 ...

Instructions on contributions are available :

component test instructions
e2e instructions

make file has been updated to have performance test, e2e and unit test too

Further improvements

1. Define requirements for load tests
2. List improvements for pipelines

[thschue]

lgtm

[codecov-commenter]

Codecov Report

Merging #225 (58ea611) into main (847a460) will increase coverage by 6.29%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff            @@
##            main     #225      +/-   ##
=========================================
+ Coverage   5.03%   11.33%   +6.29%     
=========================================
  Files          9       12       +3     
  Lines        794     1032     +238     
=========================================
+ Hits          40      117      +77     
- Misses       749      902     +153     
- Partials       5       13       +8     

Impacted Files	Coverage Δ
operator/controllers/keptnapp/controller.go	69.79% <ø> (ø)
scheduler/pkg/klcpermit/workflow_manager.go	11.23% <0.00%> (ø)
scheduler/pkg/klcpermit/permit.go	0.00% <0.00%> (ø)

Flag	Coverage Δ
keptn-lifecycle-operator	13.19% <ø> (+7.59%)	⬆️
scheduler	4.52% <ø> (+4.52%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Fixed :)