Getting older - ;TLDR

Sadly, there comes a time when your new pet has to grow up.

Your challenge in this step is to test-drive the growUp feature of the Pet function.

This can be broken down into two steps:

• The Pet should have an initial age of 0

• The growUp method should increase the age property by 1

Learning objectives

• define a method as a function belonging to an object

• understand what is meant by an objects prototype

• understand why we add methods to the prototype

• understand why we don't usually add properties to the prototype

To complete this challenge, you will need to:

• test the expected behaviour in the Node CLI

• write unit tests to to cover the expected behaviour

• implement the code to make the tests pass

Once you are done, commit your work and push to GitHub