Welcome to your fifth and final unit for this course dedicated to practicing Test Driven Development (TDD) utilizing TypeScript and Jest. We're going to finish building a our ShoppingCart system by adding even more features into our class.

In this course, emphasis is placed on hands-on practice, where you'll receive requirements through tests, one at a time. Your task is to write tests AND implement code that makes each test pass, simulating a real-world TDD environment. Where I wrote the tests for you last time, this time it's all up to you!

Remember to use the core concepts of the Red-Green-Refactor cycle while completing these coding exercises. I'm still here to help! Just ask.

• Description: The cart should enforce a maximum quantity limit of 10 for a single type of item, preventing more than the allowed amount to be added.
• Details
  • Utilize the addItem(item, quantity) method to add items to the cart.
  • Ensure an error is raised when adding a quantity that exceeds a limit of 10 for a single item.
  • The error message should clearly state 'Maximum quantity exceeded' when the limit is breached.
• Examples: Attempting to add 11 units of { id: '1', name: 'Book', price: 10 } should throw an error indicating 'Maximum quantity exceeded'.