https://github.com/top-submissions/fullstackjs-testing-practice
https://github.com/top-submissions/fullstackjs-testing-practice
array-methods babel caesar-cipher calculator code-coverage es6 fullstack-javascript javascript javascript-functions jest learning-project nodejs software-testing string-manipulation tdd test-driven-development testing testing-practice the-odin-project unit-testing
Last synced: 7 days ago
JSON representation
- Host: GitHub
- URL: https://github.com/top-submissions/fullstackjs-testing-practice
- Owner: top-submissions
- License: mit
- Created: 2026-01-07T00:02:07.000Z (5 months ago)
- Default Branch: main
- Last Pushed: 2026-01-10T07:11:40.000Z (5 months ago)
- Last Synced: 2026-01-11T00:26:15.812Z (5 months ago)
- Topics: array-methods, babel, caesar-cipher, calculator, code-coverage, es6, fullstack-javascript, javascript, javascript-functions, jest, learning-project, nodejs, software-testing, string-manipulation, tdd, test-driven-development, testing, testing-practice, the-odin-project, unit-testing
- Language: JavaScript
- Size: 69.3 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Testing Practice
[](LICENSE)
[](https://www.theodinproject.com/)
> A hands-on exploration of Test-Driven Development (TDD) using Jest as part of The Odin Project curriculum. This repository documents my learning journey through writing comprehensive unit tests for various JavaScript functions.
## 📋 Table of Contents
- [Testing Practice](#testing-practice)
- [📋 Table of Contents](#-table-of-contents)
- [✨ Features](#-features)
- [🚀 Getting Started](#-getting-started)
- [Prerequisites](#prerequisites)
- [Installation](#installation)
- [Running Tests](#running-tests)
- [💡 Future Improvements](#-future-improvements)
- [📚 What I Learned](#-what-i-learned)
- [🛠️ Technologies Used](#️-technologies-used)
- [🔗 Resources](#-resources)
- [🙏 Acknowledgments](#-acknowledgments)
## ✨ Features
- **String Utilities** - capitalize() and reverseString() functions with full test coverage
- **Calculator Object** - Basic arithmetic operations (add, subtract, multiply, divide) with comprehensive tests
- **Caesar Cipher** - Character shifting cipher with case preservation and wrapping logic
- **Array Analysis** - Statistical analysis function returning average, min, max, and length
- **Test-Driven Development** - All functions implemented using TDD methodology with Jest
## 🚀 Getting Started
Want to run this project locally? Here's how:
### Prerequisites
- Node.js (version 14 or higher)
- npm (comes with Node.js)
- Basic understanding of JavaScript and unit testing
### Installation
1. Clone the repository
```bash
git clone https://github.com/top-submissions/fullstackjs-testing-practice.git
cd fullstackjs-testing-practice
```
1. Install dependencies
```bash
npm install
```
1. Verify installation
```bash
npm test
```
### Running Tests
Run all tests:
```bash
npm test
```
Run tests in watch mode:
```bash
npm test -- --watch
```
Run tests with coverage:
```bash
npm test -- --coverage
```
## 💡 Future Improvements
If I were to continue working on this project, here's what I'd add:
- [ ] Add edge case tests for division by zero
- [ ] Implement integration tests for combined function usage
- [ ] Add performance benchmarks for array analysis with large datasets
- [ ] Implement additional cipher algorithms (ROT13, Vigenère)
- [ ] Add TypeScript support with type definitions
- [ ] Create visual test coverage reports
- [ ] Add continuous integration with GitHub Actions
- [ ] Implement property-based testing with fast-check
## 📚 What I Learned
- **Test-Driven Development** - Writing tests first helps clarify requirements and leads to better code design
- **Jest Framework** - Mastered Jest's testing syntax, matchers, and test organization with describe/test blocks
- **Edge Case Handling** - Importance of testing boundary conditions, empty inputs, and invalid data
- **Code Coverage** - Understanding what code coverage metrics mean and how to achieve comprehensive test coverage
- **Modular Design** - Structuring code into small, testable functions with single responsibilities
- **Array Methods** - Leveraging reduce(), map(), and spread operators for elegant solutions
- **Character Encoding** - Working with character codes and ASCII values for the Caesar cipher implementation
## 🛠️ Technologies Used
- **Jest** - JavaScript testing framework
- **Babel** - JavaScript transpiler for ES6+ support
- **Node.js** - JavaScript runtime environment
- **ES6 Modules** - Modern JavaScript module system
## 🔗 Resources
- [Jest Documentation](https://jestjs.io/docs/getting-started)
- [The Odin Project - Testing Basics](https://www.theodinproject.com/lessons/node-path-javascript-testing-basics)
- [The Odin Project - Testing Practice](https://www.theodinproject.com/lessons/node-path-javascript-testing-practice)
- [MDN - Array Methods](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
## 🙏 Acknowledgments
- **The Odin Project** - For providing an amazing free curriculum
---
Built with 💡 and ☕ as part of my journey through The Odin Project