Installment eligibility and follow-up windows

Verification Boundary

The suite checks a calculation, validator or adapter in isolation. It cannot qualify the full business workflow.

What This Suite Proves

The assertions examine installment eligibility and follow-up windows. The linked scenario list records the verified portions of specification coverage.

What It Does Not Prove

It does not establish database persistence, deployed operation authority, queue delivery, real schedule dispatch or communication transport.

Real Dependencies and Test Doubles

The suite invokes the production calculation, validation or adapter with controlled case inputs. External runtime dependencies are outside this boundary.

Must Not Be Doubled

The function under test and its asserted calculation or validation must remain real. Do not substitute the expected answer for the production result.