Book Image

Modern C++ Programming Cookbook

By : Marius Bancila
Book Image

Modern C++ Programming Cookbook

By: Marius Bancila

Overview of this book

C++ is one of the most widely used programming languages. Fast, efficient, and flexible, it is used to solve many problems. The latest versions of C++ have seen programmers change the way they code, giving up on the old-fashioned C-style programming and adopting modern C++ instead. Beginning with the modern language features, each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. You will learn major concepts about the core programming language as well as common tasks faced while building a wide variety of software. You will learn about concepts such as concurrency, performance, meta-programming, lambda expressions, regular expressions, testing, and many more in the form of recipes. These recipes will ensure you can make your applications robust and fast. By the end of the book, you will understand the newer aspects of C++11/14/17 and will be able to overcome tasks that are time-consuming or would break your stride while developing.
Table of Contents (19 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

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_FASE(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 compare the two values...