test objects design

from Brian Marick - Everyday Scripting with Ruby

What I tell people on my consulting trips is that every week you spend
at your job should make you worth at least a little more money. Make
a habit of asking yourself whether that has been true of the past week.
Some fraction of scripters fall into the opposite trap: they get so enthralled
with scripting that they build elaborate, gorgeous (to them, at least)
frameworks far in excess of what their job demands. The trick in scripting
is to push yourself beyond the minimum while still regularly producing
results that justify your salary. To do that, you have to grow
your scripts bit by bit, satisfying one real and immediate need after
another, while still keeping the code clean. This book won’t surgically
implant that skill in your skull, but it’s given you some of the tools you
need.(emphasis mine)