ShippingWithOffers: the rated charge and what the offers take off it
Verification Boundary
The unit suite checks the named contract or helper with controlled inputs.
What This Suite Proves
The registered cases check shippingWithOffers: the rated charge and what the offers take off it 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.