Test Writing: Comparable Cat

Created By: Geoffrey Challen

/ Version: 2020.10.0

Create a class called Cat that implements the Comparable interface. Cat should provide a public constructor that takes a single double argument that sets that cat's age. You should assert that the provided age is not negative. You should order cats based on their age. Specifically, compareTo should return:

• -1 if this cat is younger than the passed cat
• 0 if this cat is the same age as the passed cat, or if the passed value is not a Cat
• 1 if this cat is older than the passed cat

As a reminder, the Comparable interface comprises a single method: int compareTo(Object other).

Test Design Challenge

You're challenge is to write tests for this problem described above.

• Provide a public class named TestCat with a single non-private class method named test that accepts no arguments and does not return a value.
• If the implementation of the class described above is incorrect, your test method should throw an exception.
• If it is correct, do not throw an exception.
• You may want to use Java's assert method