If we look back at our requirements for creating a user, there's one that is still unfinished – "The user may optionally provide a profile; otherwise, an empty profile will be created for them". So, let's implement this requirement!
Adding a user profile
Writing a specification as a test
We will begin development by first writing E2E tests. In the previous chapter, we already tested a scenario where the profile is not supplied. In these new E2E tests, we will add two more scenarios where the client provides a profile object—one using an invalid profile, the other a valid one.
Therefore, we must first decide what constitutes a valid profile; in other words, what should the structure...
