certifier for OpenFaaS

The purpose of this project is to certify that an OpenFaaS provider is doing what it should in response to the RESTful API.

Usage

The tests assume a local environment with basic authentication turned off.

Auth

The test can use auth by setting an explicit Bearer token using the -token flag or by reading the CLI config when you set the -enableAuth flag.

echo -n $PASSWORD | faas-cli login --gateway=$OPENFAAS_URL --username admin --password-stdin
go test - v ./tests -enableAuth -gateway=$OPENFAAS_URL

Kubernetes

Usage with local Kubernetes cluster:

export OPENFAAS_URL=http://127.0.0.1:31112/
make test-kubernetes

You will need to have access to kubectl for creating and cleaning state.

If you have enabled auth in your cluster, first login with the faas-cli and then use

export OPENFAAS_URL=http://127.0.0.1:31112/
make test-kubernetes .FEATURE_FLAGS='-enableAuth'

Development

While developing the certifier, we generally run/test the certifier locally using faas-netes. The cleanest way to do this is using an throw-away cluster using KinD and arkade

kind create cluster
arkade install openfaas --basic-auth=false
kubectl rollout status -n openfaas deploy/gateway
kubectl port-forward -n openfaas svc/gateway 8080:8080  > /dev/null 2>&1 &

export OPENFAAS_URL=http://127.0.0.1:8080/
make test-kubernetes

When you are done, you can stop the port-forward and clean up the cluster using

pkill kubectl
kind delete cluster

Running individual tests

The test suite uses the Go test framework, so we can run individual tests by passing the -run flag.

For example,

go test -run '^Test_SecretCRUD'

This is exposed in the Makefile,

make test-kubernetes .TEST_FLAGS='-run ^Test_SecretCRUD'

Test and Feature flags

Some providers may not implement all features (yet) or an installation may have disabled a feature (e.g. scale to zero using the faas-idler)

  -enableAuth
    	enable/disable authentication. The auth will be parsed from the default config in ~/.openfaas/config.yml
  -gateway string
    	set the gateway URL, if empty use the gateway_url env variable
  -enableScaling
    	enable/disable scale from zero tests (default true)
  -secretUpdate
    	enable/disable secret update tests (default true)
  -token string
    	authentication Bearer token override, enables auth automatically

These flags can be passed the the Makefile via the .FEATURE_FLAGS variable:

make test-kubernetes .FEATURE_FLAGS='-scaleToZero=false'

Status

This is a work-in-progress and attempts to cover the basic scenarios of operating an OpenFaaS provider.

Style guidelines

• Initial versions use idiomatic Go for tests (no asserts or Gherkin)
• Duplication is better than premature abstraction / complexity
• Tests need to cope with timeouts and attempt retries when that makes sense
• should pass gofmt
• commits should follow contribution guide of openfaas/faas