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Programming Fundamentals: Getting Started with C# and .NET

Unit Testing

Explore how to create unit tests in C# with the xUnit framework to identify and fix logic errors in code. Understand test creation steps, including setting up test projects, writing Fact and Theory tests, and interpreting test results to improve code reliability.

We'll cover the following...

What are unit tests?

Unit tests verify that the logic of code is working as expected. Unit testing breaks a program down into small, testable, individual units.

Why use unit tests?

For example, if we want to test a console-based application that has the following code:

namespace UTCalculator {
    public class CalculatorFeatures
    {
        public static int AddTwoNumbers(int num1, int num2)
        {
            int result = num1 - num2;
            return result; 
        } 
    }
}

Note: We have to test a method named AddTwoNumbers in the class named CalculatorFeature.

If we call this ...