Java Reference
In-Depth Information
Presentation-layer testing
If debugging is the process of removing
software bugs, then programming must
be the process of putting them in.
—Edsger Dijkstra
This chapter covers
Introducing presentation-layer testing
■
Testing with HtmlUnit
■
Testing with Selenium
■
Simply stated,
presentation-layer testing
means finding bugs in the graphical user
interface (
GUI
) of an application. Finding errors here is as important as finding
errors in other application tiers. A bad user experience can cost you a customer or
discourage a web surfer from visiting your site again. Furthermore, bugs in the user
interface may cause other parts of the application to malfunction.
Because of its nature and interaction with a person,
GUI
testing presents unique
challenges and requires its own set of tools and techniques. This chapter covers
testing web application user interfaces.
We address here what can be objectively, or programmatically, asserted about
the
GUI
. Outside the scope of this discussion are whether the choice of subjective
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