Unit testing
When we talk about unit testing, we are talking about the most basic but essential processes to ensure that our code works as we expect. Simply put, a unit test verifies that a specific piece of your code (such as a function or method) does what it’s supposed to do, regardless of what’s going on around it. It’s like a magnifying glass that focuses on just one part of the code to make sure it’s built well before integrating it with everything else.
For example, if you have a function that adds two numbers, your unit test will confirm that 2 + 3 always equals 5. It doesn’t get complicated by external things, such as databases or services, because those distractions aren’t part of its job.
The following are characteristics of unit testing:
- Isolated: Each test is independent and does not depend on another. This makes them reliable.
- Fast: Unit tests execute in milliseconds, which is ideal for running them every...
