For quite some time now, I am hoping to come across a book on modern C++ idiom as comprehensive as the Purple book by James Coplien! Finally, I got bored of the long wait and a thought came to my mind - This is Web 2.0 and open knowledge era. Why don't I start writing myself? and ask the world to contribute to it? So here we go! A new free, open book on modern C++ idioms called More C++ Idioms is taking shape on en.wikibooks.org And everyone's invited!
Unit testing your template code comes up from time to time. (You test your templates, right?) Some templates are easy to test. No others. Sometimes it's not clear how to about injecting mock code into the template code that's under test. I've seen several reasons why code injection becomes challenging. Here I've outlined some examples below with roughly increasing code injection difficulty. Template accepts a type argument and an object of the same type by reference in constructor Template accepts a type argument. Makes a copy of the constructor argument or simply does not take one Template accepts a type argument and instantiates multiple interrelated templates without virtual functions Lets start with the easy ones. Template accepts a type argument and an object of the same type by reference in constructor This one appears straight-forward because the unit test simply instantiates the template under test with a mock type. Some assertion might be tested in...
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