archunit-rules

You can enforce architecture boundaries by codifying ArchUnit rules as tests under src/test/java to validate that features respect published APIs, private internals, and prevent improper cross-layer dependencies during the test phase.

Yes, for brownfield codebases this approach captures existing architectural violations and freezes them to prevent regressions, allowing new code to adhere to the rules while legacy issues are addressed incrementally.

The best way to prevent cycles and internal access is applying a default ArchUnit rule set that validates feature boundaries and cross-layer dependencies, integrating governance directly into your review and test phases.

To gate changes against the architectural contract, create ArchUnit tests in src/test/java that define and validate your structural constraints, ensuring the test suite fails when new code violates layer or module boundaries.

Yes, enforcing dependency management rules with ArchUnit works for both greenfield and brownfield projects, providing a default rule set for new boundaries while freezing existing violations to prevent regression in legacy code.