go-test-seam-discipline

To remove test-driven abstractions in Go, refactor the codebase to eliminate function fields, local interfaces, nil guards, and convenience constructors that exist solely to support tests, ensuring runtime semantics remain unchanged.

A test seam in Go is an abstraction like a function field or local interface introduced specifically to support testing. You should refactor it when the abstraction serves no production purpose and dictates the runtime code structure.

Stop tests from dictating Go production code structure by applying test seam discipline: identify test-only abstractions like nil guards and convenience constructors, then refactor the code so tests adapt to the production design instead.

Refactoring Go code to remove test seams maintains runtime semantics. The process targets and eliminates test-only abstractions without altering the actual runtime behavior or production logic of the application.

The best way to separate test from production code in Go is to remove test-driven abstractions—such as unnecessary function fields and local interfaces—ensuring seams are only introduced for genuine production reasons rather than testing convenience.

Your Go codebase likely has unnecessary interfaces and nil guards because they were added as test-driven abstractions to support mocking. These seams should be removed if they do not serve a valid production purpose.