What is a Spy? A Practical Guide to Test Doubles in PHP

Описание: Welcome back to our series on Test Doubles! I'm your Coding Coach, and in this video, we'll dive into the world of Spies. We'll show you exactly how to implement a Spy from scratch in PHP, giving you the control you need to test your code confidently.

A Spy is a type of Test Double that records information about how it's used. This is incredibly useful for verifying that your code is behaving as expected, such as checking if a method was called or how many times it was called. We'll be using PHPUnit to drive our development.

The code for this series can be found on GitHub: https://github.com/the-engineering-co...

Previous in the Series:
If you're new to Test Doubles, start with the first video where we cover Stubs:
👉 Watch the previous video on Stubs here:    • An Introduction to Stubs: Test Doubles in ...  

Next in the Series:
Ready for the next step? Our next video is about Mocks, another powerful type of test double.
👉 Watch the next video on Mocks here:    • Mastering Mocks: Your Guide to TDD and Tes...  

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