Delivering Reliability in Your Data

In the previous chapter, we learned how to ensure that your code behaves consistently and how to use macros and external libraries in the code.

In this chapter, you will learn how to ensure the reliability of your data by adding tests that verify your expectations and check the results of your transformations.

Finally, you will learn which tests make the most sense in each layer, and we will add many tests and macros to our sample project.

This chapter covers the following topics:

• Testing to provide reliability
• Testing the right things in the right places