I'll be building a simple Family Cash Card application — a modern way for parents to manage allowance funds for their kiddos❤️👨‍👩‍👦👨‍👧‍👧🤑. In this course I’ll build a RESTful API for a Family Cash Card service. In doing so, I’ll learn how to use Spring Boot to build a fully-functional application. I take a project-based, test-first approach, rather than a technology-based approach

1.Guide the creation of code in order to arrive at a desired outcome 2.Tests are a powerful safety net to enforce correctness 3.If someone were to make a code change which caused this new test to fail, then I'll have caught the error before it could become an issue

The user who created the Cash Card "owns" the Cash Card. Thus, they are the "card owner". Only the card owner can view or update a Cash Card.

IF the user is authenticated

... AND they are authorized as a "card owner"

... ... AND they own the requested Cash Card

THEN complete the users's request

BUT don't allow users to access Cash Cards they do not own.