Exchange Rate Rules rule suite

Verification Boundary

The suite evaluates books configuration logic directly. Its boundary is the called functions and configured dependencies, rather than a running service.

What This Suite Proves

The individual assertion references identify the acceptance outcomes this file exercises. When a scenario spans several suites, this file supplies only its listed assertions; qualification must include the other bindings and any recorded coverage finding.

What It Does Not Prove

Direct function checks do not prove route enforcement, transaction behavior or deployed integration. No result is claimed for the pinned revision until the suite runs and its evidence is reviewed.

Real Dependencies and Test Doubles

The called rule or mapping functions are real code. Test inputs and any dependency doubles remain confined to individual examples.

Must Not Be Doubled

The production function or carried adapter named by the file remains the subject under test; a second implementation of its expected answer is not a substitute.