Testing C++ Applications: From Unit Tests to Integration Coverage

The book "Testing C++ Applications" is a comprehensive practical guide that will help you master all aspects of software testing in C++. From basic unit tests to complex integration scenarios and automation in CI/CD.

What is this book about?

In modern C++ development, code quality and reliability are paramount. This book bridges the gap between theory and real-world practice, providing ready-made recipes and templates for testing projects of any scale. You will learn:

• How to properly write unit tests using the Google Test (gtest), Catch2, and Boost.Test frameworks.
• The principles of TDD (Test-Driven Development) and how to implement them in an existing C++ project.
• Techniques for mocking and code isolation using the FakeIt, Trompeloeil, and Google Mock libraries.
• Strategies for testing multithreaded applications and working with asynchronous code.
• Test automation: integration with CMake, CTest, Jenkins, GitHub Actions, and GitLab CI.
• Measuring code coverage using gcov and lcov.

Who is this book for?

The book is intended for a wide range of developers:

• Junior developers — will learn where to start testing and how not to be afraid of writing tests.
• Middle and Senior developers — will find advanced techniques, test optimization, and patterns for legacy code.
• Architects and Team Leads — will receive a guide to implementing a testing culture within the team.
• DevOps engineers — will learn how to set up automated quality assurance pipelines.

What will you learn?

After reading this book, you will be able to:

• Write clean, maintainable, and fast tests for any C++ code.
• Effectively isolate dependencies using mock objects.
• Apply TDD to design a more flexible architecture.
• Integrate testing into the build and deployment process.
• Analyze coverage and find "blind spots" in tests.
• Test performance and memory using benchmarks.

The book contains numerous code examples, ready for use, and practical exercises to reinforce the material. Each chapter builds from simple to complex, and difficult concepts are explained using real-world industry cases.

"Testing C++ Applications" is not just a reference guide, but a desk book for everyone who wants to write reliable, safe, and easily maintainable code in C++.

Ideal for self-study and for use as corporate training material.