Back to Basics: C++ Testing - Amir Kirsh - CppCon 2022

Testing

In this lecture, Amir Kirsh delves into the fundamental principles of C++ testing, highlighting the importance of testing in software development and providing practical insights into effective testing strategies and techniques.

Key takeaways

The main problem with testing in C++ is that the API is too fluid and difficult to define.
Unit testing is valuable for ensuring that code works correctly, and is not just testing the mock.
Tests should be isolated from each other and not rely on specific implementations.
Code should be designed to be testable, with separate layers and interfaces.
Mocking dependencies is important for unit testing, as it allows for isolation of the code being tested.
Tests should be written before the code, as this helps to ensure that the code is designed correctly.
The testing pyramid, with unit tests, integration tests, and system tests, is a good way to approach testing.
Code should be reviewed, especially tests, to ensure that it is correct and maintainable.
Time should be managed to ensure that tests are not too long or complex.
Code should be written with testability in mind, and should be decoupled from other parts of the system.
Testing should be done with random input, to ensure that the code works correctly under different conditions.
The idea of TDD (Test-Driven Development) is to write tests before writing code, to ensure that the code is correct and maintainable.
The main goal of testing is to ensure that the code works correctly, and to catch bugs early.
The concept of “bed tests” is a bad practice, as it means that the test is not testing the code correctly.
A bug is not necessarily a bad thing, as it can be caught and fixed early in the development process.
A good test should be easy to understand and maintain, and should be written before the code is written.
Testing is an important part of the development process, and should be done regularly.
Code review is important for testing, as it allows for review of the code and identification of bugs.
The idea of a “testing fixture” is to have a base class that provides a setup and teardown for tests.
The idea of “test driven development” is to write tests before writing code, to ensure that the code is correct and maintainable.
A good code test should be easy to understand and maintain, and should be written before the code is written.
The idea of “test driven development” is to write tests before writing code, to ensure that the code is correct and maintainable.
Code review is important for testing, as it allows for review of the code and identification of bugs.
A good test should be easy to understand and maintain, and should be written before the code is written.

Back to Basics: C++ Testing - Amir Kirsh - CppCon 2022

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