The Secret Passages of the Test Pyramid – the Middle of the Pyramid

In the previous chapter, we explored the concept of the test pyramid and its base. If you skipped that chapter and decided to read this one directly, we recommend that you go over its introduction first to understand the test pyramid concept. In this chapter, we are going to cover the middle of the test pyramid and check all its dimensions, secret passages, and dangers.

In this chapter, we are going to cover the following main topics:

• What is inside the middle of the test pyramid?
• Differences between integration, API, and contract testing
• The secret passages – shadowing testing
• The other side of the middle of the pyramid – performance testing