Test-Driven Java Development, Second Edition - Second Edition

Mocking frameworks

Our project looks cool, but it's too simple and it is far from being a real project. It still doesn't use external resources. A database is required by Java projects so we'll try to introduce it, as well.

What is the common way to test code that uses external resources or third-party libraries? Mocks are the answer. A mock object, or simply a mock, is a simulated object that can be used to replace real ones. They are very useful when objects that depend on external resources are deprived of them.

In fact, you don't need a database at all while you are developing the application. Instead, you can use mocks to speed up development and testing and use a real database connection only at runtime. Instead of spending time setting ...