A feature file turns a user-facing requirement into an executable description of behavior. Written in Gherkin, it groups a feature with scenarios that describe expected outcomes, giving developers and project managers a shared target for integration tests. section 9.2
A practical feature-file workflow includes:
- Run the feature through Godog against the whole application rather than individual packages; unfinished steps intentionally keep the build from passing. section 9.3 section 9.2
- Reuse the same feature definition for backend, user-interface, or end-to-end tests when the behavior remains shared. section 9.2
Translation feature
Feature: Translation Service describes that users can submit a word for translation. Its Translation scenario says Given the word "hello", When I translate it to "german", Then the response should be "Hallo". Godog maps these steps to Go functions, starts the API in a test server, calls the endpoint, and checks the returned translation.
