70-548 Designing and Developing Windows-Based Applications by Using the Microsoft .NET Framework Online Class

Demo Question 10.

You work as the Enterprise application developer at EliteCertify.com. The EliteCertify.com network consists of a single Active Directory domain named EliteCertify.com. All servers in the domain run Windows Server 2003. Your responsibilities at EliteCertify.com include the testing and stabilization of Applications. EliteCertify.com operates as a company rendering financial and accounting services to its customers. EliteCertify.com developed a Microsoft Windows Forms application that allows users to file their federal and state income taxes. There are fifty assemblies in the application that provides the business logic for state income taxes. Each of these fifty assemblies contains the business logic for a particular state. It just so happened that California, Florida, and Arkansas changed their tax regulations. These three states are now allowing their taxpayers to deduct all the capital profits that they made on the sales of all properties other than first properties on their state income tax returns. A EliteCertify.com developer named Amy Wilson was then instructed to modify three components to accommodate this change. These modifications included method and property additions and changes. Amy Wilson then created the following unit testing strategy: 1. Test all new and changed methods and properties in the California component. 2. If the test passes, conclude that the Florida and Arkansas components also pass testing. You now need to make a decision as to whether the unit testing strategy is adequate. What conclusion can you draw?

A. The unit testing strategy is adequate.
B. Amy Wilson should test only the new methods and properties in the California component.
C. Amy Wilson should test all methods and properties in the California component.
D. Amy Wilson should test the methods and properties in the Florida and Arkansas components.


Display Answer

Answer: D

Explanation: The unit testing strategy is inadequate. Unit testing should always be performed whenever you add, remove, or modify exposed members of a component. If you use a driver stub approach in unit testing to verify each functional unit in a component, you ensure that the component work successfully before it is integrated into the overall solution. In this case the methods and properties were added and changed in three of the fifty components. Thus Amy Wilson should test each new and changed method in all three components. Incorrect answers: A. This is an inadequate unit testing strategy since Amy Wilson should be testing all three components that changed and have new methods. B. If only the California component is tested, it cannot be an adequate unit testing strategy. C. If only the methods and properties of the California component are tested it is an inadequate unit testing strategy since three of the components have been modified.