What are some examples of unit testing in C++?

What are some examples of unit testing in C++?

Unit testing in C++ can be done using frameworks like Google Test or Catch2. Would you like to see a specific example?

Yes, please provide an example using Google Test.

Sure! Here's a simple example:

#include <gtest/gtest.h>

int add(int a, int b) {
    return a + b;
}

TEST(AddTest, PositiveNumbers) {
    EXPECT_EQ(add(1, 2), 3);
    EXPECT_EQ(add(2, 3), 5);
}

TEST(AddTest, NegativeNumbers) {
    EXPECT_EQ(add(-1, -1), -2);
}

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

This tests the add function with positive and negative numbers.

How do I run these tests?

To run the tests, compile your code with Google Test linked, then execute the resulting binary. It will run all tests and show the results.

Can you explain how to set up Google Test?

Absolutely! You can set up Google Test by downloading it from GitHub, including the headers in your project, and linking the library during compilation.