concept JUnit 4 architecture in category java

This is an excerpt from Manning's book JUnit in Action MEAP V06. Login to get full access to this book.

The architecture of a system strongly determines its capabilities and its behavior. Consider the runners and rules analyzed earlier in this chapter. Their way of working is generated by the JUnit 4 architecture that represents their foundation. Understanding the architectures of both JUnit 4 and JUnit 5 helps us apply their capabilities in practice, write efficient tests, and analyze the alternative implementations, thereby quickening the pace at which we master unit testing.