Chapter 9, Problem 16E

Program Plan Intro

Program plan:

The variables used in the program are given below:

1. salesItem: An instance of the SalesItem class that is used to perform tests on the addComment() method.

The methods used in the program are as follows:

1. testNegativeRatingBoundaries(): A JUnit test method that tests the addComment() method with illegal ratings of 0 and 6, which should return false.
2. assertFalse(): A JUnit assertion method that checks whether the passed boolean expression is false or not. In this case, it is used to check whether the addComment() method returns false when trying to add comments with illegal ratings.
3. addComment(): A method of the SalesItem class that adds a comment to the salesItem instance with a given author, comment, and rating. This method returns true if the comment is added successfully and false if the rating is invalid.

Program Description:

To write a test to perform negative testing on the boundaries of the rating range.