October 2013
Intermediate to advanced
368 pages
9h 20m
English
Content preview from Modern C++ Programming with Test-Driven DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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4.5 Inspecting Privates
New test-drivers inevitably ask two questions: Is it OK to write tests against private member data? What about private member functions? These are two related but distinct topics that both relate to design choices you must make.
Private Data
The Tell-Don’t-Ask design concept says that you should tell an object to do something and let that object go off and complete its work. If you ask lots of questions of the object, you’re violating Tell-Don’t-Ask. A system consisting of excessive queries to other objects will be entangled and complex. Client C asks an object S for information, does some work that’s possibly a responsibility S could take on, asks another question of S, and so on, creating a tight interaction between ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.