The purchase eligibility of a checkout

Verification Boundary

The unit suite checks the named contract or helper with controlled inputs.

What This Suite Proves

The registered cases check the purchase eligibility of a checkout with their fixture records and assertions. Scenario bindings name only the examples those cases exercise.

What It Does Not Prove

A registered file supplies no run result or verified conformance by itself. Local fixtures do not establish deployed cross-service behavior or complete browser journeys.

Real Dependencies and Test Doubles

Inputs and external responses are controlled in process; this suite establishes no deployed service behavior.

Must Not Be Doubled

The named contract validation or component behavior under assertion must use its actual implementation.