Book Image

Modern C++ Programming Cookbook - Second Edition

By : Marius Bancila
5 (1)
Book Image

Modern C++ Programming Cookbook - Second Edition

5 (1)
By: Marius Bancila

Overview of this book

C++ has come a long way to be one of the most widely used general-purpose languages that is fast, efficient, and high-performance at its core. The updated second edition of Modern C++ Programming Cookbook addresses the latest features of C++20, such as modules, concepts, coroutines, and the many additions to the standard library, including ranges and text formatting. The book is organized in the form of practical recipes covering a wide range of problems faced by modern developers. The book also delves into the details of all the core concepts in modern C++ programming, such as functions and classes, iterators and algorithms, streams and the file system, threading and concurrency, smart pointers and move semantics, and many others. It goes into the performance aspects of programming in depth, teaching developers how to write fast and lean code with the help of best practices. Furthermore, the book explores useful patterns and delves into the implementation of many idioms, including pimpl, named parameter, and attorney-client, teaching techniques such as avoiding repetition with the factory pattern. There is also a chapter dedicated to unit testing, where you are introduced to three of the most widely used libraries for C++: Boost.Test, Google Test, and Catch2. By the end of the book, you will be able to effectively leverage the features and techniques of C++11/14/17/20 programming to enhance the performance, scalability, and efficiency of your applications.
Table of Contents (16 chapters)
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Asserting with Google Test

The Google Test framework provides a rich set of both fatal and non-fatal assertion macros, which resemble function calls, to verify the tested code. When these assertions fail, the framework displays the source file, line number, and relevant error message (including custom error messages) to help developers quickly identify the failed code. We have already seen some simple examples on how to use the ASSERT_TRUE macro; in this recipe, we will look at other available macros.

How to do it...

Use the following macros to verify the tested code:

  • Use ASSERT_TRUE(condition) or EXPECT_TRUE(condition) to check whether the condition is true and ASSERT_FALSE(condition) or EXPECT_FALSE(condition) to check whether the condition is false, as shown in the following code:
    EXPECT_TRUE(2 + 2 == 2 * 2);
    EXPECT_FALSE(1 == 2);
    ASSERT_TRUE(2 + 2 == 2 * 2);
    ASSERT_FALSE(1 == 2);
  • Use ASSERT_XX(val1, val2) or EXPECT_XX(val1, val2) to...