Unit Testing

What is Unit Testing?

Unit testing is a software testing technique where individual units or components of a software are tested in isolation. The goal is to validate that each unit of the software performs as designed.

Benefits of Unit Testing

Ensures code correctness and reliability
Facilitates refactoring and code changes
Improves code quality and maintainability
Enables automated regression testing

Example: Simple Unit Test in C#

using Xunit;

public class CalculatorTests
{
    [Fact]
    public void Add_ReturnsSum()
    {
        var calculator = new Calculator();
        var result = calculator.Add(2, 3);
        Assert.Equal(5, result);
    }
}