Organizing your tests
There are many ways of organizing test projects inside a solution, and I tend to create a unit test project for each project in the solution and one or more integration test projects.A unit test is directly related to a single unit of code, whether it’s a method or a class. It is straightforward to associate a unit test project with its respective code project (assembly), leading to a one-on-one relationship. One unit test project per assembly makes them portable, easier to navigate, and even more so when the solution grows.
If you have a preferred way to organize yours that differs from what we are doing in the book, by all means, use that approach instead.
Integration tests, on the other hand, can span multiple projects, so having a single rule that fits all scenarios is challenging. One integration test project per solution is often enough. Sometimes we can need more than one, depending on the context.
I recommend starting with one integration test project...
