Have you created test files for modules or components in your development practice?

Yes, in C/C++ development practice, creating test files for modules or components is a common practice. It helps to:

• Verify the correctness of individual parts of the program.
• Ensure regression testing when changes are made.
• Simplify debugging and code maintenance.

Frameworks like Google Test (gtest) are often used for this purpose. An example of a simple test using gtest:

#include <gtest/gtest.h>

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

TEST(AdditionTest, HandlesPositiveNumbers) {
    EXPECT_EQ(add(2, 3), 5);
}

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

This approach improves the quality and reliability of the code.