The KubeLibrary is a wrapper for the Python Kubernetes Client that enables developers to assert the status of various objects in their Kubernetes clusters, making it ideal for verifying the testability of their system-under-test before running end-to-end tests. It can be integrated with any Robot Framework test suite and allows users to connect to their Kubernetes cluster while executing any Kubernetes API command. The library provides a simple way to build tests to verify that all objects in the cluster are up and running and in the expected state, ensuring successful end-to-end test runs.