Test your policy before it ships

A guardrail you cannot test is a guardrail you cannot trust. Key points:

• Treat each bundle as code with its own tests: assert that a good input passes and a bad input is denied, so a policy change cannot silently stop enforcing.
• Version the policy with the services it governs, so a rollback of the rule is as traceable as a rollback of code.
• Every gate decision lands in the tamper-evident audit trail, so you can show not just what the policy says but how it actually decided on a given release.