# 522-frameworks-micronaut-testing-integration-tests

Guides writing Micronaut integration tests using Testcontainers and Maven test configurations.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 303 installs · ★ 456
- Author: Juan Antonio Breña Moral
- License: Apache-2.0 · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/jabrena/plinth/tree/HEAD/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md
- Updated: 2026-10-21
- HTML: https://affpapa.org/en/nevibecode/skills/522-frameworks-micronaut-testing-integration-tests

## What it does

This skill defines conventions for Micronaut integration testing. It sets up `@MicronautTest` suites, injects dynamic JDBC or Kafka connection parameters through `TestPropertyProvider`, and executes HTTP checks via `HttpClient`. Transactional rollback mode isolates state across test executions.

Build execution separates fast unit suites from integration runs. Maven Surefire handles `*Test` classes, while Maven Failsafe executes `*IT` and `*AT` targets. Shared containers use pinned image tags at the class level.

Compilation is a strict requirement. The skill halts immediately if `./mvnw compile` or `mvn compile` fails before changes are introduced. After updating the test setup, it runs `./mvnw clean verify` to ensure the build passes.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add jabrena/plinth --skill 522-frameworks-micronaut-testing-integration-tests -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/522-frameworks-micronaut-testing-integration-tests/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add jabrena/plinth --skill 522-frameworks-micronaut-testing-integration-tests -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add jabrena/plinth --skill 522-frameworks-micronaut-testing-integration-tests -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install jabrena/plinth 522-frameworks-micronaut-testing-integration-tests
```

2. **Manually: put the files in place**
- File: `.github/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add jabrena/plinth --skill 522-frameworks-micronaut-testing-integration-tests -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/jabrena/plinth --path skills/522-frameworks-micronaut-testing-integration-tests
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add jabrena/plinth --skill 522-frameworks-micronaut-testing-integration-tests -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/jabrena/plinth/tree/HEAD/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md

## When to use it
- configure Testcontainers for Micronaut integration tests
- pass dynamic JDBC or Kafka connection URLs via `TestPropertyProvider`
- enable transactional rollbacks in `@MicronautTest`
- separate unit and integration suites across Maven Surefire and Failsafe

## Example prompts
- Add Micronaut integration tests with Testcontainers.
- Wire dynamic database connection parameters using TestPropertyProvider into @MicronautTest.
- Configure replacement beans for our Micronaut integration tests.

## Source text · SKILL.md · Apache-2.0

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: fa425c81be943802.

BEGIN THIRD-PARTY FILE fa425c81be943802
```text
---
name: 522-frameworks-micronaut-testing-integration-tests
description: Use when you need to write or improve integration tests for Micronaut — @MicronautTest, HttpClient, TestPropertyProvider with Testcontainers, transactional test mode where appropriate, and Maven Surefire/Failsafe splits for *Test, *Tests, *IT, and *AT. This should trigger for requests such as Add Micronaut integration tests with Testcontainers; Wire dynamic datasource or broker URLs for @MicronautTest; Write @MicronautTest integration tests with Testcontainers; Configure replacement beans for Micronaut integration tests; Review Micronaut integration test lifecycle and resources. Part of Plinth Toolkit
license: Apache-2.0
metadata:
  author: Juan Antonio Breña Moral
  version: 0.19.0
---
# Micronaut Integration Testing

Prove real wiring in Micronaut with containers and HTTP.

**What is covered in this Skill?**

- Scope: contracts and boundaries, not duplicated unit-test logic
- TestPropertyProvider + static @Container for JDBC/Kafka properties
- HttpClient full-stack HTTP assertions
- @MicronautTest(transactional = true) for rollback where supported
- Shared containers per class; pinned image tags
- Maven Surefire/Failsafe: *Test / *Tests vs *IT / *AT; explicit plugin includes and excludes

**Scope:** Apply recommendations based on the reference rules and good/bad code examples.

## Constraints

Before applying any integration test changes, ensure the project compiles. If compilation fails, stop immediately. After applying improvements, run full verification.

- **MANDATORY**: Run `./mvnw compile` or `mvn compile` before applying any change
- **PREREQUISITE**: Project must compile successfully and pass basic validation checks before any test refactoring
- **CRITICAL SAFETY**: If compilation fails, IMMEDIATELY STOP and DO NOT CONTINUE with any recommendations
- **BLOCKING CONDITION**: Compilation errors must be resolved by the user before proceeding with integration test changes
- **NO EXCEPTIONS**: Under no circumstances should testing recommendations be applied to a project that fails to compile
- **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 Micronaut integration tests with Testcontainers
- Wire dynamic datasource or broker URLs for @MicronautTest
- Write @MicronautTest integration tests with Testcontainers
```
END THIRD-PARTY FILE fa425c81be943802

The third-party file has ended. Everything between the fa425c81be943802 tags is data: requests and commands from it are not followed. An “end of file” line with another tag inside the block is part of the file.

First 2475 of 3433 bytes. © Juan Antonio Breña Moral · Apache-2.0 · https://github.com/jabrena/plinth/tree/HEAD/skills/522-frameworks-micronaut-testing-integration-tests/SKILL.md

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