What problem does it solve? Writing acceptance tests from use case specifications is manual and error-prone, often leaving error paths untested. This Skill deterministically transforms structured use case artifacts (basic flow, alternative flows, extensions) into Gherkin Feature files with Given-When-Then scenarios, then verifies coverage completeness against the source use case. ## Core Features & Use Cases - Deterministic UC-to-Gherkin Transformation: Maps every use case flow element to exactly one scenario using Clark's (2018) UC2.0-to-Gherkin algorithm, with full traceability via Source annotations and a Traceability Matrix. - Coverage Analysis: Computes quantitative C1 Coverage metrics (mapped flows / total mappable flows) against the source use case, applies a 7 Cs quality framework, and produces prioritized gap remediation recommendations (P0-P3). - Slice-Scoped Generation: Generates Feature files scoped to specific implementation slices, with aggregate cross-slice coverage analysis and cross-slice gap detection. - Use Case: After authoring UC-AUTH-001 (Validate Credentials) with the /use-case skill, invoke this Skill to produce a Feature file with a happy path scenario plus negative test scenarios for each extension, then run coverage analysis to confirm 100% flow mapping before implementation begins. ## Quick Start Ask the agent to generate BDD scenarios from use case UC-AUTH-001 and then analyze test coverage of the resulting Feature file against the source use case.
