program selection system

Printed Program Guide Blurb
Books on Test-Driven Development abound for C# and Java, but there are few directed towards C++ programmers. Yet much software is written is C++, and C++ is an extremely powerful language, one that I’ve found to be quite well-suited for doing TDD. I will present a series of practical and efficient testing patterns specifically for C++. Most of the techniques involve templates; one of them involves lexical closure. Many of these techniques are also well-suited for dealing with legacy code.

Abstract
Books on Test-Driven Development abound for C# and Java, but there are few directed towards C++ programmers. Yet much software is written is C++, and C++ is an extremely powerful language, one that I’ve found to be quite well-suited for doing TDD. I will present a series of practical and efficient testing patterns specifically for C++.

Topics Covered

• The standard way to mock an API call (or free function call) is through “Sub-class and Override” (a.k.a. “Test Sub-class”). What do you do if your code needs to be so performant that you can’t use a virtual method? What other techniques are available?
• How do you mock an API call in a static method?
• Suppose you have a static method which contains an automatic variable of class type Foo. How do you inject a test double of Foo into a static method?
• Suppose you have an instance method and want to replace an automatic variable (or API call) with a Test Spy. What’s the safest way of getting the answer back from the spy?
• Say you have a class containing an inconvenient data member of type Foo. How can you create a test version of your class with the Foo data member replaced with a Test Double?

The answers to most of these questions involve templates. The answer to one of them involves lexical closure. Many of these techniques are also well-suited for dealing with legacy code.