This repository contains the slides of my CppCon 2019 talk "Next Generation Unit Testing Using Static Reflection". The recorded talk is available at YouTube here.
Unit testing is a widely accepted practice in the software engineering industry, which has been demonstrated to help reduce bugs in production and provide faster iteration cycles for development, helping with development trends such as agile development or continuous deployment.
While being part of the core of modern development, C++ due to its current language limitations lacks a unit testing framework that's expressive and concise enough to keep developers focused around tests themselves and not around all the code needed to support the tests. Current unit testing solutions for C++ usually require arcane constructions through macros, intrusive changes in the tested codebase in the form of class hierarchies for easy mocking, and in some cases manual test registration.
I present unittest, a proof of concept unit testing framework for C++14 based on Python's standard unittest package. unittest avoids the problems described above by using static reflection to figure out what code describes a unit test, and what library functions should be mocked as part of the test. Current C++14 implementation is based on tinyrefl, a libclang based static reflection tool, but the same concept will be possible to implement through future C++ reflection features like those proposed by the Reflection Technical Specification.
slides.md: Slides markdown sourcesslides.pdf: Slides rendered to PDF
The slides were rendered using the Marp plugin for VS-Code.
tinyreflstatic reflection system.unittestC++ proof of concept implementation.- Python 3
unittestdocumentation.
All code snippets shown in the talk are published under the MIT Open Source
License. Check tinyefl and unittest repositories for the license details of
these projects.