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generating-api-tests

Testing & Quality
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Reads API_Contracts.md and generates failing Vitest integration tests for the expected Next.js Route Handlers. Use when generating API tests for TDD.

QUICK START

How to use this skill

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  2. Copy the prompt below and paste it into your agent.
  3. Review the proposed files and risks before you approve installation.
Prompt to paste
I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/GoogleCloudPlatform/devrel-demos/blob/HEAD/other/modernizing-expressjs/.agents/skills/generating-api-tests/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/generating-api-tests/. Do not write files or run scripts until I approve.

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Objective

Implement Test-Driven Development (TDD) by writing strict tests asserting the exact behaviors, payloads, and JSON responses defined in the legacy Express APIs.

Instructions for the Scaffold Subagent

Copy this checklist and track your progress:

Task Progress:
- [ ] Step 1: Read the API Contracts
- [ ] Step 2: Generate Auth/User Tests
- [ ] Step 3: Generate Article/Comment Tests

Step 1. Read the Specs:

Locate and read docs/legacy-audit/API_Contracts.md and docs/legacy-audit/Business_Logic_Rules.md.

Step 2. Generate Test Suites:

Create a tests/api folder. For each distinct domain in the contracts (e.g., users.test.ts, articles.test.ts), write a Vitest suite.

Step 3. Mocking:

Use node-mocks-http to construct the Request and capture the Next.js NextResponse JSON output. Assert that the required HTTP status codes (200, 201, 401, 404, 422) and JSON body structures match the original Express requirements.

Crucial Note: These tests WILL FAIL initially. That is the point of TDD. They will be executed repeatedly during the Data and API scaffolding phases until they pass.