If you work in a team with multiple members, you might have experienced that bad moment when a member pushes some changes and the application does not work as expected. Not only that, if the team does not have a mechanism to avoid changes that can break, someone else's code might cause conflict and decrease the quality of our applications.

Applying testing enables a mechanism that helps us avoid potential bugs in the code. It is recommended that you write test scripts for all the components into the application. The code coverage percentage is an indicator of how much testing the development team has written for the application. It is recommended to have a 100 percent coverage; with this, you ensure that every time someone else changes the code, you are not breaking someone else's code.