How to Run Tests for Hallmark: Complete Manual Verification Guide

TLDR: Hallmark does not provide an automated test suite; you validate the skill by running npm run serve and manually comparing the rendered UI against the reference specifications in skills/hallmark/references/slop-test.md.

To run tests for Hallmark, you must follow a manual verification workflow unlike typical Node.js projects. Hallmark is a design skill package for AI coding assistants maintained by Nutlope that intentionally ships without Jest, Mocha, or any automated testing framework, requiring developers to verify behavior against a documented reference file.

Understanding Hallmark's Testing Architecture

According to the Nutlope/hallmark source code, the repository is structured for manual validation rather than CI/CD automation.

No Automated Test Scripts in package.json

The package.json manifest reveals that the project defines only a single npm script. As implemented in the repository, the scripts section contains:

"scripts": {
  "serve": "vite preview --port 4173"
}

There is no test script defined, which means running npm test returns an error. The project also contains zero external npm dependencies, confirming it relies entirely on static assets and browser-based rendering rather than Node.js testing utilities.

The Slop Test Reference File

The sole testing artifact is located at skills/hallmark/references/slop-test.md. This markdown file contains the authoritative test scenarios, expected outputs, and validation criteria that the skill author intends developers to check manually against the running application.

Step-by-Step Manual Testing Guide

Since Hallmark requires visual confirmation against reference material, follow this exact workflow to validate the skill:

1. Clone the Repository

git clone https://github.com/Nutlope/hallmark.git
cd hallmark

2. Install Dependencies (Optional)

Hallmark ships with no external npm dependencies, so npm install is technically optional and primarily serves to verify local Node.js compatibility:

npm install

3. Start the Development Server

Run the only available script to start the local HTTP server:

npm run serve

This command launches a Vite preview server hosting the site/ directory on port 4173. Keep this terminal session active while testing.

4. Load the Application in Your Browser

Navigate to http://localhost:4173 to load site/index.html. The page renders the interactive UI driven by site/js/main.js, which constitutes the skill's functional interface.

5. Verify Against the Slop Test Reference

Open skills/hallmark/references/slop-test.md in your code editor. This file describes specific scenarios—such as typography rendering, layout constraints, and component states—that constitute a "passing" test. Manually exercise the UI in your browser and confirm that:

• Visual output matches the specifications in the reference file
• Interactive behaviors defined in site/js/main.js produce expected DOM changes
• No console errors appear during scenario execution

Creating an Automated Test Harness (Optional)

If you require CI/CD integration, you can author a custom automated test harness. Because npm run serve exposes a standard HTTP endpoint, tools like Playwright or Jest with jsdom can load http://localhost:4173 and assert against the DOM structure described in skills/hallmark/references/slop-test.md.

Example Playwright test stub:

import { test, expect } from '@playwright/test';

test('hallmark renders correctly', async ({ page }) => {
  await page.goto('http://localhost:4173');
  // Add assertions based on slop-test.md criteria
  await expect(page.locator('h1')).toHaveText('Expected Title');
});

Summary

• Hallmark has no built-in test runner: The package.json contains only a serve script, with no test command or testing framework dependencies.
• Manual verification is required: Testing relies on comparing the running application against the specifications in skills/hallmark/references/slop-test.md.
• Server runs on port 4173: Execute npm run serve to start the Vite preview server hosting site/index.html.
• Core files: The UI logic resides in site/js/main.js, while the entry point is site/index.html.
• Automation possible: You can build a custom harness using Playwright or similar tools to parse the Slop Test reference programmatically.

Frequently Asked Questions

Does Hallmark include automated unit tests?

No. As implemented in Nutlope/hallmark, the repository contains no automated unit tests, integration tests, or end-to-end suites. The project is designed as a design skill for AI assistants, validated through the manual Slop Test reference rather than automated assertions.

What is the Slop Test reference file?

The Slop Test reference is a markdown document located at skills/hallmark/references/slop-test.md. It defines the expected behavior, visual outputs, and test scenarios that developers must manually verify when running the Hallmark skill locally.

How do I run Hallmark locally to begin testing?

Execute npm run serve in the repository root. This starts a development server on port 4173 serving the site/ directory. You can then open http://localhost:4173 in a browser to begin manual verification against the reference criteria.

Can I add automated tests to the Hallmark repository?

Yes. While not provided out of the box, you can create a custom test harness using frameworks like Jest with jsdom or Playwright. These tools can load the page served by npm run serve and assert that the DOM matches the expectations documented in skills/hallmark/references/slop-test.md.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}