Testing Integration

What it does

When your agent uses it

• Testing API boundaries
• Verifying contracts
• Validating cross-service integration

Example prompts

• “/testing-integration”

Requirements

• Python 3
• Node.js
• Docker
• Compatibility (from SKILL.md): Claude Code 2.1.277+.
• Pre-approved tools (allowed-tools): Read, Glob, Grep, WebFetch, WebSearch

Workflow steps

6 steps, taken from the first numbered list in SKILL.md.

1. 1Test at boundaries -- API inputs, database queries, service calls, external integrations
2. 2Fresh state per test -- In-memory databases, transaction rollback, no shared mutable state
3. 3Use matchers in contracts -- Like(), EachLike(), Term() instead of exact values
4. 4Property-based for invariants -- Roundtrip, idempotence, commutativity properties
5. 5Validate schemas at edges -- Zod .safeParse() at every API boundary
6. 6Evidence-backed completion -- Exit code 0, coverage reports, timestamps

What it can do on your machine

Read from SKILL.md and the folder at commit 1f8d8f3. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves these tools, so the agent can use them without asking each time:

  • Read
  • Glob
  • Grep
  • WebFetch
  • WebSearch

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  Ships 1 file in scripts/, which the agent can run.

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Links to these hosts (documentation or services it may open):

  • docs.pact.io
  • docs.github.com
  • fastapi.tiangolo.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names no API keys, tokens, secrets or passwords.

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

• Compatibility

  Claude Code 2.1.277+.

  From compatibility in the SKILL.md frontmatter.

Context cost

Testing Integration loads about 2.7k tokens when it runs, and up to ~5.9k if it reads all its reference files. Until then it costs about 75 tokens; SKILL.md has 687 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~75

When it runs · the whole SKILL.md, loaded when a task matches

~2.7k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~5.9k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from yonatangross/orchestkit at commit 1f8d8f3, republished under its MIT licence (© yonatangross). 687 words, ~2,674 tokens.

name

testing-integration

description

Integration and contract testing patterns — API endpoint tests, component integration, database testing, Pact contract verification, property-based testing, and Zod schema validation. Use when testing API boundaries, verifying contracts, or validating cross-service integration.

allowed-tools

Read, Glob, Grep, WebFetch, WebSearch

compatibility

Claude Code 2.1.277+.

license

MIT

context

fork

agent

test-generator

user-invocable

false

disable-model-invocation

false

metadata.category

document-asset-creation

metadata.version

2.1.0

metadata.author

OrchestKit

metadata.complexity

medium

metadata.tags

testing, integration, contract, pact, property, zod, api

import { PostgreSqlContainer } from '@testcontainers/postgresql'
import { describe, beforeAll, afterAll, test, expect } from 'vitest'

describe('UserRepository integration', () => {
  let container: Awaited<ReturnType<PostgreSqlContainer['start']>>
  let repo: UserRepository

  beforeAll(async () => {
    container = await new PostgreSqlContainer('postgres:16-alpine')
      .withDatabase('test')
      .withUsername('test')
      .withPassword('test')
      .withReuse()  // v11+ — reuse across runs to speed CI
      .start()

    repo = new UserRepository(container.getConnectionUri())
    await repo.migrate()
  }, 30_000)

  afterAll(async () => {
    await container.stop()
  })

  test('persists and retrieves a user', async () => {
    const created = await repo.create({ email: 'a@b.c' })
    const found = await repo.findById(created.id)
    expect(found?.email).toBe('a@b.c')
  })
})

from testcontainers.postgres import PostgresContainer
import pytest

@pytest.fixture(scope="session")
def postgres():
    with PostgresContainer("postgres:16-alpine") as pg:
        yield pg.get_connection_url()

def test_user_repo(postgres):
    repo = UserRepository(postgres)
    repo.migrate()
    user = repo.create(email="a@b.c")
    assert repo.find_by_id(user.id).email == "a@b.c"

import request from 'supertest';
import { app } from '../app';

describe('POST /api/users', () => {
  test('creates user and returns 201', async () => {
    const response = await request(app)
      .post('/api/users')
      .send({ email: 'test@example.com', name: 'Test' });

    expect(response.status).toBe(201);
    expect(response.body.id).toBeDefined();
    expect(response.body.email).toBe('test@example.com');
  });

  test('returns 400 for invalid email', async () => {
    const response = await request(app)
      .post('/api/users')
      .send({ email: 'invalid', name: 'Test' });

    expect(response.status).toBe(400);
    expect(response.body.error).toContain('email');
  });
});

import pytest
from httpx import ASGITransport, AsyncClient
from app.main import app

@pytest.fixture
async def client():
    async with AsyncClient(transport=ASGITransport(app=app), base_url="http://test") as ac:
        yield ac

@pytest.mark.asyncio
async def test_create_user(client: AsyncClient):
    response = await client.post(
        "/api/users",
        json={"email": "test@example.com", "name": "Test"}
    )
    assert response.status_code == 201
    assert response.json()["email"] == "test@example.com"

© yonatangross, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 18 other files (scripts, references) in src/skills/testing-integration of yonatangross/orchestkit.

• SKILL.md
• checklists/contract-testing-checklist.md
• checklists/property-testing-checklist.md
• examples/orchestkit-test-strategy.md
• references/consumer-tests.md
• references/ork-delta.md
• references/strategies-guide.md
• rules/_sections.md
• rules/emulate-stateful-testing.md
• rules/integration-api.md
• rules/integration-component.md
• rules/integration-database.md
• rules/validation-zod-schema.md
• rules/verification-contract.md
• rules/verification-stateful.md
• rules/verification-techniques.md
• scripts
• … and 2 more

Open the folder on GitHubat commit 1f8d8f3