April 2026 monthly summary for repository heroku/libcnb.rs. Focused on enhancing testing capabilities by introducing the assert_matches! macro in the libcnb-test crate, enabling expressive assertions on Rust pattern matches with optional guards. This improvement strengthens test reliability and reduces boilerplate in test suites, accelerating validation during refactors and releases. Major bugs fixed: None reported this month. Overall impact: The new testing macro enhances code quality and confidence in refactors, contributing to faster delivery cycles and more robust libcnb.rs components. Continued alignment with CI to ensure test stability. Technologies/skills demonstrated: Rust macro_rules, crate-level testing utilities, pattern matching, test-driven development, code review and commit hygiene with explicit references to commits and PRs.