Use when you need to write unit tests for Micronaut applications — Mockito-first with @ExtendWith(MockitoExtension.class), @MicronautTest with @MockBean, HttpClient @Client(/) assertions, @Property overrides, @ParameterizedTest, and *Test vs *IT naming. For framework-agnostic Java use @131-java-testing-unit-testing. This should trigger for requests such as Add or improve unit tests in a Micronaut project; Reduce unnecessary @MicronautTest usage with Mockito-first tests; Write Mockito-first unit…
Use when you need to write unit tests for Micronaut applications — Mockito-first with @ExtendWith(MockitoExtension.class), @MicronautTest with @MockBean, HttpClient @Client(/) assertions, @Property overrides, @ParameterizedTest, and *Test vs *IT naming.
For framework-agnostic Java use @131-java-testing-unit-testing.
This should trigger for requests such as Add or improve unit tests in a Micronaut project; Reduce unnecessary @MicronautTest usage with Mockito-first tests; Write Mockito-first unit tests for Micronaut services; Mock Micronaut bean collaborators in unit tests; Review fast Micronaut tests without application context.
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Version0.18.0
LicenseApache-2.0
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author
Juan Antonio Breña Moral
version
0.18.0
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skill mdSKILL.md3,211 B
docsSUMMARY.md708 B
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SKILL.md
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
EDGE CASE: If request scope is ambiguous, stop and ask a clarifying question before applying changes
EDGE CASE: If required inputs, files, or tooling are missing, report what is missing and ask whether to proceed with setup guidance
When to use this skill
Add or improve unit tests in a Micronaut project
Reduce unnecessary @MicronautTest usage with Mockito-first tests
Write Mockito-first unit tests for Micronaut services
Mock Micronaut bean collaborators in unit tests
Review fast Micronaut tests without application context
Workflow
Read reference and assess project context
Read references/521-frameworks-micronaut-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/521-frameworks-micronaut-testing-unit-tests.md](references/521-frameworks-micronaut-testing-unit-tests.md).
