Question

I ve recently returned to C/C++ after years of C#. During those years I ve found the value of Mocking and Unit testing.

Finding resources for Mocks and Units tests in C# is trivial. WRT Mocking, not so much with C++.

I would like some guidance on what others do to mock and test Asynch io_service handlers with boost.

For instance, in C# I would use a MemoryStream to mock an IO.Stream, and am assuming this is the path I should take here.

C++ Mock/Test best practices
boost::asio::io_service Mock/Test best practices
C++ Async Handler Mock/Test best practices

I ve started the process with googlemock and googletest.

Answer 1

As you ve probably found already, there s much less help for mocking in C++ than in C# or Java. Personally I tend to write my own mocks as and when I need them rather than use a framework. Since most of my designs tend to be heavy on the interfaces this isn t especially difficult for me and I tend to build up a mock library that goes with the code that I m developing. An example of how I do things can be found here in my Practical testing articles. In the end it s not that different to mocking and testing in C#, all of the same principles apply, you just end up doing more of the heavy lifting yourself.

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