Unexpected test failures on StatefulSet assertions

[Miles-Garnsey]

What happened:

When polling a statefulset to determine readiness status, kuttl appears to error out due to this issue.

Essentially, it is possible for an STS to be created without a .status.readyReplicas key. When this key is defined in an assertion, its absence triggers the error.

What you expected to happen:

I would expect polling to continue until the key was available in the map. But instead it appears to exit immediately.

How to reproduce it (as minimally and precisely as possible):

The test in this folder demonstrates the problem.

Anything else we need to know?:

Environment:

• Kubernetes version (use kubectl version): 1.22
• KUTTL version (use kubectl kuttl version): 0.11.1
• Cloud provider or hardware configuration: Github Actions
• OS (e.g. from /etc/os-release): Linux