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Develop C++ unit testing with Catch2, JUnit, and GitLab CI

Blog post from GitLab

Post Details
Company
Date Published
Author
Fatima Sarah Khalid
Word Count
4,561
Company Posts That Month
15
Language
English
Hacker News Points
-
Post removed?
No
Summary

This tutorial provides a comprehensive guide on setting up unit testing for a C++ project using Catch2 and GitLab CI for continuous integration, using an air quality monitoring application as a reference. The process involves installing necessary tools like CMake and a C++ compiler, obtaining an OpenWeatherMap API key, and organizing the project structure by separating application logic into distinct files. Catch2, a C++-native testing framework, is employed to write and execute unit tests, utilizing macros for defining test cases and assertions for validating code behavior. The tutorial also explains how to simulate API interactions with mock requests to ensure tests remain unaffected by real API changes. Additionally, it covers setting up GitLab CI/CD to automate testing and demonstrates how to simulate test failures to observe error reporting in GitLab's UI. The tutorial concludes with a feature extension that retrieves current weather forecasts, encouraging users to explore further by adding asynchronous features and code quality checks.

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