Test Your Code

A team member once sent me a script that predicts X for the next 5 weeks. Unfortunately, the script gave me the exact same predictions every time I used it.

Testing that your code works properly is very important to mitigate such problems. Testing can be done in many ways, but the most simple of all is by manually running your code with different values and verifying that the final result is indeed correct.

The testing and depubbing chapter will teach you how to debug and test your code, however, for now the recommendation for you would be to test if your code is doing its job correctly by trying different variable values.

For example, suppose you have a method that calculates the volume of a pyramid given its height and base width and length. Testing the method can be done by trying different values for each of the 3 inputs and manually checking if the final volume matches your hand calculations.