521-frameworks-micronaut-testing-unit-tests

# Micronaut Unit Testing Apply fast testing strategies for Micronaut: Mockito-first, narrow @MicronautTest when HTTP or DI replacement is required. **What is covered in this Skill?** - Pure JUnit 5 + Mockito without container boot - @MicronautTest with @MockBean factory methods for collaborators - HttpClient blocking exchanges against the embedded server - @Property for deterministic configuration in tests - @ParameterizedTest with @CsvSource / @MethodSource - Naming: *Test → Surefire; *IT → Failsafe when configured - When to escalate to `@522` **Scope:** Apply recommendations based on the reference rules and good/bad code examples. ## Constraints Compile before test refactors; verify the full suite after. - **MANDATORY**: Run `./mvnw compile` or `mvn compile` before applying any change - **SAFETY**: If compilation fails, stop immediately - **VERIFY**: Run `./mvnw clean verify` or `mvn clean verify` after applying improvements - **BEFORE APPLYING**: Read the reference for detailed rules and examples ## When to use this skill - Add or improve unit tests in a Micronaut project - Reduce unnecessary @MicronautTest usage with Mockito-first tests ## Reference For detailed guidance, examples, and constraints, see [references/521-frameworks-micronaut-testing-unit-tests.md](references/521-frameworks-micronaut-testing-unit-tests.md).