Master C# Unit Testing with xUnit – A Beginner’s Guide

Are you looking to improve your C# skills and write better, more reliable code? Unit testing is a game-changer, and in my latest YouTube video, I’ll walk you through how to use xUnit to write and run unit tests effectively in C#!

🔥 What You’ll Learn in This Video

✅ Setting up xUnit in your C# project
✅ Writing your first unit test
✅ Running and debugging tests
✅ Best practices for cleaner, more efficient tests

Whether you’re new to unit testing or just looking to refine your skills, this video is packed with valuable insights to help you level up your development game.

📺 Watch now: Master C# Unit Testing with xUnit

Don’t forget to like, comment, and subscribe if you find it helpful! 🚀 #CSharp #xUnit #UnitTesting

Please find the code used in this video below.

using FizzBuzzLibrary;

namespace FizzBuzz.Tests
{
    public class FizzBuzzTest
    {
        [Theory]
        [InlineData(15, "FizzBuzz")]
        [InlineData(75, "FizzBuzz")]
        [InlineData(300, "FizzBuzz")]
        [InlineData(30, "FizzBuzz")]
        public void DivisibleBy3And5(int number, string expected)
        {
            //Act
            string actual = FizzBuzzLibrary.FizzBuzz.GetFizzBuzz(number);

            //Assert
            Assert.Equal(expected, actual);

        }
        

        [Theory]
        [InlineData(3, "Fizz")]
        [InlineData(6, "Fizz")]
        [InlineData(9, "Fizz")]
        [InlineData(27, "Fizz")]
        public void DivisibleBy3(int number, string expected)
        {
            //Act
            string actual = FizzBuzzLibrary.FizzBuzz.GetFizzBuzz(number);

            //Assert
            Assert.Equal(expected, actual);

        }

        [Theory]
        [InlineData(5, "Buzz")]
        [InlineData(20, "Buzz")]
        [InlineData(50, "Buzz")]
        [InlineData(25, "Buzz")]
        public void DivisibleBy5(int number, string expected)
        {
            //Act
            string actual = FizzBuzzLibrary.FizzBuzz.GetFizzBuzz(number);

            //Assert
            Assert.Equal(expected, actual);

        }

        [Theory]
        [InlineData(1, "1")]
        [InlineData(2, "2")]
        [InlineData(7, "7")]
        [InlineData(17, "17")]
        public void NotDivisibleBy3and5(int number, string expected)
        {
            //Act
            string actual = FizzBuzzLibrary.FizzBuzz.GetFizzBuzz(number);

            //Assert
            Assert.Equal(expected, actual);
        }

    }
}

//Arrange
//Act
//Assert

Different ways to install Nuget Package in Visual Studio 2022

In this tutorial, I’ll show you different ways to install a NuGet package in Visual Studio 2022. NuGet is the package manager for .NET, and it’s essential for adding libraries and tools to your projects. Whether you’re a beginner or an experienced developer, this guide will walk you through the process step-by-step.

Installing NuGet packages is a common task in .NET development, and Visual Studio 2022 makes it incredibly easy. Below, I’ve embedded a YouTube video tutorial that demonstrates the entire process. Watch the video to see it in action, or follow the written steps below.

Different Ways to Install a NuGet Package in Visual Studio 2022:

1. Using the NuGet Package Manager:
   • Right-click on your project in the Solution Explorer.
   • Select Manage NuGet Packages.
   • Search for the package you want to install (e.g., Newtonsoft.Json).
   • Click Install.
2. Using the Package Manager Console:
   • Open the Package Manager Console from Tools > NuGet Package Manager > Package Manager Console.
   • Run the command: Install-Package PackageName (replace PackageName with the name of the package).
3. Using the .NET CLI:
   • Open a terminal or command prompt.
   • Navigate to your project directory.
   • Run the command: dotnet add package PackageName.

If you encounter any issues during the installation, feel free to leave a comment below, and I’ll be happy to help! Don’t forget to like, share, and subscribe to my YouTube channel for more programming tutorials.

Why Use NuGet? NuGet simplifies the process of adding third-party libraries to your .NET projects. It handles dependencies, updates, and versioning, making your development workflow more efficient. Whether you’re working on a small project or a large enterprise application, NuGet is a must-have tool.

Fix git src refspec master does not match any, failed to push some refs in git and github

Are you encountering the "git src refspec master does not match any, failed to push some refs" error while trying to push your commits to GitHub? Don’t worry! In this tutorial, I’ll walk you through the steps to fix this common Git error and get your code pushed successfully.

This error usually occurs when Git can’t find the branch you’re trying to push or when there are no commits to push. Watch the video tutorial above for a visual guide, or follow the steps below:

Steps to Fix the Error:

1. Verify your remote URL with git remote -v.
2. Create an initial commit if your branch is empty using git commit -m "Initial commit".
3. Push your branch to GitHub using git push origin branch-name.
4. Check if you’re on the correct branch using git branch.

For a more detailed explanation, watch the video tutorial embedded above. If you found this guide helpful, feel free to leave a comment below or share it with others who might benefit from it!

Unable to add controller to ASP.NET, Controller option greyed out / disabled

 If you are unable to add controller to ASP.NET due to controller option being greyed out. Please check out my 1 minute youtube video which provides solution to this issue. 

Thank you very much,

How to install Nuget Package in Visual Studio 2022

 I've linked my YouTube video below, where I explain how to install Nuget Package in Visual Studio 2022

How to check .NET (dot net) framework version in Visual Studio Code (VS Code).

I've linked my YouTube video below, where I explain how to check .NET (dot net) framework version in Visual Studio Code (VS Code).

Understanding C# Interface under 10 minutes with example and a coding challenge

 I've linked my YouTube video below, where I explain interface in C# with a practical example and a fun coding challenge at the end. Below the video, you'll find the actual code featured in the tutorial.

Try solving the coding challenge yourself before checking out the solution provided at the end of this blog - it’s a fantastic way to test your understanding and sharpen your skills! Happy coding! 😊

Actual code featured in the tutorial

using System;
using System.Collections.Generic;

namespace Interface_App
{
    internal class Program
    {
        static void Main(string[] args)
        {
            List flyingThings = new List
            {
                new People(),
                new Airplane()
            };

            foreach (var thing in flyingThings)
            {
                thing.Fly();
                thing.Glide();
                Console.WriteLine();
            }

            List speakingThings = new List
            {
                new People()
            };

            foreach (var thing in speakingThings)
            {
                thing.Speak();
                Console.WriteLine();
            }
        }      
        
    }


    interface IAirActivities
    {
        void Fly();
        void Glide();
    }

    interface ISpeaking
    {
        void Speak();
    }

    public class People : IAirActivities, ISpeaking
    {
        public void Fly()
        {
            Console.WriteLine("People who fly airplanes are called pilot.");
        }

        public void Glide()
        {
            Console.WriteLine("People can glide in the air using gliders.");
        }

        public void Speak()
        {
            Console.WriteLine("People can speak at least one language.");
        }
    }
    
    public class Airplane : IAirActivities
    {
        public void Fly()
        {
            Console.WriteLine("Airplanes are able to fly in the sky");
        }

        public void Glide()
        {
            Console.WriteLine("Airplanes can glide with their engines off");
        }
    }

}

---

Interface coding challenge solution

Below is the solution to the coding challenge featured in the video. 

using System;
using System.Collections.Generic;


namespace InterfaceExcerciseApp
{
    internal class Program
    {
        static void Main(string[] args)
        {
            IAnimal lion = new Lion();
            IAnimal parrot = new Parrot();
            IAnimal snake = new Snake();
            
            List animals = new List { lion, parrot, snake};
            

            foreach (IAnimal animal in animals)
            {
                Console.WriteLine(animal.Eat());
                Console.WriteLine(animal.MakeSound());
                Console.WriteLine();
            }
        }
    }

    public interface IAnimal
    {
        string Eat();
        string MakeSound();
    }

    public class Lion : IAnimal
    {
        public string Eat()
        {
            return "Lions eat meat";
        }

        public string MakeSound()
        {
            return "Lion roars"; 
        }   
    }

    public class Parrot : IAnimal
    {
        public string Eat()
        {
            return "Parrots eat nuts.";
        }

        public string MakeSound()
        {
            return "Parrots sing";
        }
    }

    public class Snake : IAnimal
    {
        public string Eat()
        {
            return "Snakes eat rodents.";
        }

        public string MakeSound()
        {
            return "Snakes hiss.";
        }
    }
}