We are pretty sure you have heard the term "bug" when speaking about applications. Sentences such as "We found a bug in the application that…" followed by some very undesirable behavior are more common than you think. Writing code is not the only task of a developer; testing it is crucial too. You should not release a version of your application that has not been tested. However, could you imagine having to test your entire application every time you change a line? It would be a nightmare!
Well, we are not the first ones to have this issue, so, luckily enough, developers have already found a pretty good solution to this problem. In fact, they found more than one solution, turning testing into a very hot topic of discussion. Even being a test developer has become quite a common role. In this chapter, we will introduce you to one of the approaches of testing your code: unit tests.
In this chapter, you will learn about:
How unit tests work
Configuring PHPUnit...