By Kris Jusiak
Testing in C++ is not easy, it requires a lot of boilerplate code, macro usage and/or understanding of complicated testing frameworks. But it doesn’t have to be like that. C++20 will enable us to reinvent the way we write tests. If taking a glance into the future of testing in C++ peaks your interest this session is for you.
In this case study we will address the difficulty of testing with C++ by implementing a new, fully functional, macro-free testing framework [1] from scratch with modern C++20 features.
The main goal will be to leverage modern C++ in order to make the following snippet compile and run:
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int main() {
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"hello world"_test = [] { // Running "hello world"…
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expect(12_i == fib(7)); // hello_world.cpp:3:FAILED [ 12 == 13 ]
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}; // tests: 1 | 1 failed
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} // asserts: 1 | 0 passed | 1 failed
The session will also focus on how to design modern testing facilities such as:
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Sub/sections
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Parameterized tests
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Behaviour Driven Development (BDD)
At the end of this session the audience will have a better understanding of C++20 features such as:
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New additions to lambdas
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User Defined Literals (UDL)
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Concepts
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Source Location
As well as how and where to apply them. Additionally, attendees will get familiar with a new, expressive way of testing with modern C++.
Let’s get ready to test all the things at ACCU 2020 and follow the Beyonce rule - "If you liked it then you should put a test on it".
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