CheckSchemaAttributesMatch is a test utility that can be used to make sure a resource's schema stays in sync with its datasource counterpart.

HookGlobal sets `*ptr = val` and returns a closure for restoring `*ptr` to its original value.

IsKnown is a shortcut that checks in a value is neither null nor unknown.

NewService overrides the client method for testing.

CockroachCluster is used by the cluster resource and the cluster data source.