Chapter 9, Problem 15E

Program Plan Intro

Program plan:

The variables used in the program are given below:

1. salesItem: an instance of SalesItem class, used to add comments to it and test the addComment() method.

The methods used in the program are as follows:

1. addComment(): a method of SalesItem class, used to add comments to the salesItem instance.
2. assertFalse(): a JUnit assertion method that checks whether the passed boolean expression is false or not

Program Description:

To create a test to check whether the method addComment() method returns false when trying to add a comment from the same author that already exists.