integration-testing
Design and implement integration tests that verify component interactions, API endpoints, database operations, and external service communication. Use for integration test, API test, end-to-end component testing, and service layer validation.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill integration-testing- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads integration-testing automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Integration Testing
Table of Contents
Overview
Integration testing validates that different components, modules, or services work correctly together. Unlike unit tests that isolate single functions, integration tests verify the interactions between multiple parts of your system including databases, APIs, external services, and infrastructure.
When to Use
- Testing API endpoints with real database connections
- Verifying service-to-service communication
- Validating data flow across multiple layers
- Testing repository/DAO layer with actual databases
- Checking authentication and authorization flows
- Verifying message queue consumers and producers
- Testing third-party service integrations
Quick Start
Minimal working example:
// test/api/users.integration.test.js
const request = require("supertest");
const app = require("../../src/app");
const { setupTestDB, teardownTestDB } = require("../helpers/db");
describe("User API Integration Tests", () => {
beforeAll(async () => {
await setupTestDB();
});
afterAll(async () => {
await teardownTestDB();
});
beforeEach(async () => {
await clearUsers();
});
describe("POST /api/users", () => {
it("should create a new user with valid data", async () => {
const userData = {
email: "test@example.com",
name: "Test User",
password: "SecurePass123!",
};
// ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| API Integration Testing | API Integration Testing |
| Database Integration Testing | Database Integration Testing |
| External Service Integration | External Service Integration |
| Message Queue Integration | Message Queue Integration |
Best Practices
✅ DO
- Use real databases in integration tests (in-memory or containers)
- Test actual HTTP requests, not mocked responses
- Verify database state after operations
- Test transaction boundaries and rollbacks
- Include authentication/authorization in tests
- Test error scenarios and edge cases
- Use test containers for isolated environments
- Clean up data between tests
❌ DON'T
- Mock database connections in integration tests
- Skip testing error paths
- Leave test data in databases
- Use production databases for testing
- Ignore transaction management
- Test only happy paths
- Share state between tests
- Hardcode URLs or credentials
FAQ
What does the integration-testing skill do?
Design and implement integration tests that verify component interactions, API endpoints, database operations, and external service communication. Use for integration test, API test, end-to-end component testing, and service layer validation.
How do I install integration-testing?
Run npx skills add https://github.com/aj-geddes/useful-ai-prompts --skill integration-testing in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/integration-testing/ (personal) or .claude/skills/integration-testing/ (project).
Which AI agents can use integration-testing?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is integration-testing safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains integration-testing?
It is published by aj-geddes in aj-geddes/useful-ai-prompts. It has 551 recorded installs.
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