Test Driven Development using Javascript and Jest

🏆 **Course Overview:** This online course serves as an introduction to Test-Driven Development (TDD) using the Jest testing framework. The instruction style is largely live coding, where the instructor demonstrates writing tests and accompanying code for a game in JavaScript. The course aims to show the process of test creation, code writing, and refactoring in a TDD workflow. **Pros:** - **Introduction to TDD and Jest:** The course provides a good starting point for understanding the basics of TDD and how to use the Jest framework. - **Real-world Application:** Students get to see the principles of TDD applied in real-time through live coding sessions, which can be insightful. - **Process Demonstration:** The instructor's process of alternating between writing tests and code is clearly demonstrated, offering a practical view of TDD. - **Accessibility Considerations:** For those with adequate screen size, the simultaneous display of both `game.js` and `game.spec.js` files allows for a clear understanding of the coding and testing process. - **Interactive Elements:** The hands-on approach encourages students to follow along and actively engage with the material. 🔍 **Considerations for Improvement:** - **Lack of Explanation:** Several reviews mention that the course lacks detailed explanations of why certain steps are taken, including a more profound exploration of TDD philosophy. - **Advanced Knowledge Required:** The course assumes a certain level of prior knowledge in JavaScript and TDD, which may not be explicitly stated, making it less accessible for beginners. - **Content Delivery:** The absence of chapter introductions and summaries makes the course feel a bit rough around the edges. - **Limited Coverage of Jest:** The course focuses heavily on the `toEqual` matcher and a specific use case with `setInterval`, without fully utilizing the broader capabilities of Jest. - **Screen Width Issue:** Some users reported difficulties following the live coding due to the width of the available screen, which cut off parts of the code being written. - **Insufficient Theory:** The course is criticized for its lack of theoretical background on both TDD and Jest, with one reviewer suggesting that simply looking at the Jest documentation would provide more information than what was covered in the course. - **Abstract Logic:** The choice of a game with abstract and mathematical logic as an example made it harder for some students to understand the contours auxiliares (auxiliary accounts) and focus on the course content. **Final Verdict:** The course is a reasonable introduction to TDD with Jest, but it would benefit significantly from more comprehensive explanations of the concepts taught, better structure, and a broader exploration of Jest's features. It is well-suited for those who already have some knowledge of JavaScript and are looking to see TDD in action through live coding. However, students seeking a more theoretical approach or in-depth coverage of Jest might find this course lacking.