Test Harnesses for terraform and helm

[michaeljguarino]

Both terraform and helm have very poor local testability. I believe we could write relatively decent unit tests to provide something of a CI experience when writing this code and improve durability against regressions.

For helm:

• likely inflate the helm chart and have a simple DSL which can pick out specific manifests and probe for key-value matches

For terraform:

• figure out a way to generate the expected terraform state tree and test against that.