521-frameworks-micronaut-testing-unit-tests

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Translated

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. Part of the skills-for-java project

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Sourcejabrena/cursor-rules-java

Added on2026-03-27

NPX Install

npx skill4agent add jabrena/cursor-rules-java 521-frameworks-micronaut-testing-unit-tests

SKILL.md Content

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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.