Setup Jest unit testing

[AlexJSully]

Realized in #533 that there were no unit tests within this project. Added support for Jest unit testing.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
portfolio	Ready	Preview	Comment	Sep 15, 2025 2:03am

[Copilot]

Pull Request Overview

This PR adds Jest unit testing infrastructure to the project, addressing the gap identified in issue #533. It includes comprehensive test coverage for components and utilities, along with CI/CD integration.

• Sets up Jest testing framework with necessary configuration and dependencies
• Adds unit tests for key components (Avatar, Navbar, CookieSnackbar, etc.) and utility functions
• Updates CI/CD workflows to include unit test execution in quality assurance checks

Reviewed Changes

Copilot reviewed 15 out of 20 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
package.json	Adds Jest dependencies and test scripts, updates validation workflow
jest/setup.ts	Jest configuration with polyfills for Node.js environment
jest/svg-mock.js	Mock for SVG imports in Jest tests
src/util/isNetworkFast.test.ts	Unit tests for network speed detection utility
src/helpers/ascii.test.ts	Unit tests for ASCII logo functionality
src/helpers/aaaahhhh.test.ts	Unit tests for image replacement helper functions
src/components/*/test.tsx	Unit tests for React components with mocking and event testing
src/components/banner/Avatar.tsx	Fixes import path from @Helper to @helpers
src/app/page.tsx	Fixes import path from @Helper to @helpers
.github/workflows/*.yaml	Updates Node.js action versions and adds unit test steps

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}