Quarkus Unit Testing
Apply fast testing strategies for Quarkus: Mockito-first, QuarkusTest when CDI wiring matters.
What is covered in this Skill?
- Pure JUnit 5 + Mockito without container boot (@ExtendWith(MockitoExtension.class))
- @QuarkusTest with @InjectMock for full CDI bean replacement
- @InjectSpy for partial mocking — real bean wrapped as spy, specific methods overridden
- REST Assured for HTTP-level @QuarkusTest resource tests
- @ParameterizedTest with @CsvSource (inline data) and @MethodSource (complex objects)
- QuarkusTestProfile and @TestProfile for test-specific configuration overrides
- Naming conventions: *Test → Surefire (fast phase), *IT → Failsafe (verify phase)
- When to escalate to integration tests (
@422)
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
- PREREQUISITE: Project must compile before applying test improvements
- SAFETY: If compilation fails, stop immediately
- BLOCKING CONDITION: Compilation errors must be resolved by the user before proceeding
- 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 Quarkus project
- Reduce slow @QuarkusTest usage with Mockito-first tests
- Add @InjectSpy partial mocking or QuarkusTestProfile configuration in Quarkus tests
- Convert repeated test methods to @ParameterizedTest with @CsvSource or @MethodSource
- Write fast pure unit tests for Quarkus services
Workflow
- Read reference and assess project context
Read references/421-frameworks-quarkus-testing-unit-tests.md and inspect the current project setup before proposing changes.
- Gather scope and decide target improvements
Identify requested outcomes, constraints, and the minimum safe set of changes to apply.
- Apply framework-aligned changes
Implement or refactor configuration/code following the reference patterns and project conventions.
- Run verification and report results
Execute appropriate build/tests and summarize what changed, what was verified, and any follow-up actions.
Reference
For detailed guidance, examples, and constraints, see references/421-frameworks-quarkus-testing-unit-tests.md.