# quarkus-dev-services-and-testing

Guides AI agents in writing Quarkus tests, configuring zero-config Dev Services containers, and managing @QuarkusTest suites.

- skill · `type=skill` · GitHub Copilot · ★ 40451
- Author: github · official GitHub repository
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/github/awesome-copilot/tree/HEAD/skills/quarkus-dev-services-and-testing/SKILL.md
- Updated: 2026-10-23
- HTML: https://affpapa.org/en/nevibecode/skills/quarkus-dev-services-and-testing

## What it does

This skill provides Quarkus-specific testing patterns for GitHub Copilot. It covers automatic zero-config container startup via Dev Services for databases like PostgreSQL, Kafka, and Redis, alongside RestAssured HTTP assertions and CDI bean mocking with `@InjectMock`.

The instructions steer the agent toward proper test architecture. They explain how to isolate tests with `@TestTransaction`, mock security roles via `@TestSecurity`, and prevent frequent context reboots caused by fragmented `@TestProfile` definitions.

Dev Services will fail without a running Docker or Podman daemon. Another frequent trap: running `./mvnw verify` silently skips `@QuarkusIntegrationTest` suites unless `-DskipITs=false` is passed explicitly.

## Install

### GitHub Copilot (native platform)

1. **GitHub CLI**
```bash
gh skill install github/awesome-copilot quarkus-dev-services-and-testing
```

2. **Manually: put the files in place**
- File: `.github/skills/quarkus-dev-services-and-testing/SKILL.md`

### Claude Code

1. **Skills CLI (Vercel)**
```bash
npx skills add github/awesome-copilot --skill quarkus-dev-services-and-testing -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/quarkus-dev-services-and-testing/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/quarkus-dev-services-and-testing/

### Codex

**Manually: put the files in place**
- File: `.agents/skills/quarkus-dev-services-and-testing/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

**Manually: put the files in place**
- File: `.cursor/skills/quarkus-dev-services-and-testing/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### Gemini CLI

**Platform CLI**
```bash
gemini skills install https://github.com/github/awesome-copilot --path skills/quarkus-dev-services-and-testing
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/quarkus-dev-services-and-testing/SKILL.md` — The legacy .windsurf/skills/ path still works

### 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/github/awesome-copilot/tree/HEAD/skills/quarkus-dev-services-and-testing/SKILL.md

## When to use it
- Configure zero-config Dev Services containers for local testing
- Mock CDI dependencies using `@InjectMock` in Panache repositories
- Simulate authenticated users and roles with `@TestSecurity`
- Execute `@QuarkusIntegrationTest` verification without silent Maven skips

## Example prompts
- Write an endpoint test for GreetingResource using RestAssured and status assertions
- Configure PostgreSQL Dev Services with container reuse in application.properties
- Fix silent skips for @QuarkusIntegrationTest when running Maven verify

## Source text · SKILL.md · MIT

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: 1a05456a288ba1ab.

BEGIN THIRD-PARTY FILE 1a05456a288ba1ab
````text
---
name: quarkus-dev-services-and-testing
description: 'Quarkus Dev Services and testing: zero-config containers, @QuarkusTest, @QuarkusIntegrationTest, test resources, RestAssured, @InjectMock, profiles and continuous testing. Use when writing or fixing tests in a Quarkus project.'
---

# Quarkus Dev Services and Testing

Check the project's Quarkus version first. Framework-neutral Testcontainers usage can use the optional `java-testcontainers` skill if installed (otherwise see <https://java.testcontainers.org/>); this skill covers only Quarkus-specific features.

## Dev Services

In dev and test modes Quarkus starts containers (PostgreSQL, MySQL, Kafka, Redis, Keycloak, ...) automatically when the related extension is present and no connection is configured (Docker or Podman required).

```properties
# Global switch
quarkus.devservices.enabled=true
%dev.quarkus.datasource.devservices.image-name=postgres:17
# Reuse container across restarts (also requires testcontainers.reuse.enable=true in ~/.testcontainers.properties)
quarkus.datasource.devservices.reuse=true
# Fixed port (optional)
quarkus.datasource.devservices.port=5432
# Share between apps in dev mode
quarkus.kafka.devservices.shared=true
```

Disable one with `quarkus.<ext>.devservices.enabled=false`; configuring a URL/host explicitly also disables it. Dev UI (`/q/dev-ui`) lists running services.

## Tests

```java
@QuarkusTest
class GreetingResourceTest {
    @Test
    void hello() {
        given().when().get("/hello").then().statusCode(200).body(is("Hello"));
    }
}
```

Dependencies, test scope: `io.quarkus:quarkus-junit` (3.31+, what the 3.40 template generates) or `quarkus-junit5` (3.27 template; still published and resolvable on 3.40) and `io.rest-assured:rest-assured`. Keep whichever the project already uses.

- Inject beans in tests with `@Inject`; mock CDI beans with `io.quarkus.test.InjectMock` (`quarkus-junit-mockito`, formerly `quarkus-junit5-mockito`; verified mocking a `PanacheRepository` bean on 3.40.1).
- Security: `@TestSecurity(user="alice", roles="admin")` (`quarkus-test-security`).
- Profiles: `@TestProfile(MyProfile.class)` with `QuarkusTestProfile#getConfigOverrides()`; restarts the app, so use sparingly.
- Transactions: `@TestTransaction` rolls back after the test.
- `@QuarkusIntegrationTest` runs against the packaged artifact (jar, native binary or container); you cannot inject beans there, only call it over HTTP.

## Test resources

```java
public class WireMockResource implements QuarkusTestResourceLifecycleManager {
    public Map<String,String> start() { /* start, return config overrides */ return Map.of(); }
    public void stop() { }
}

@QuarkusTest
@WithTestResource(WireMockResource.class)   // io.quarkus.test.common.WithTestResource
class MyTest { }
```
````
END THIRD-PARTY FILE 1a05456a288ba1ab

The third-party file has ended. Everything between the 1a05456a288ba1ab 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 2796 of 5086 bytes. © github · MIT · https://github.com/github/awesome-copilot/tree/HEAD/skills/quarkus-dev-services-and-testing/SKILL.md

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