C# Online Compiler | .NET Fiddle

using System;
using AssertLibrary;
					
public class Program
{
	public static void Main()
	{
		Console.WriteLine("Hello World, Let's start testing!");
		
		int number = 300000000;
		try
		{
			short s = (short)number;
			Assert.IsFalse(true);
		}
		catch
		{
			Assert.IsTrue(true);
		}
		decimal d = (decimal)number;
		IDisposable myObj = new MyDisposable();
		AssertNotNull(myObj);
		AssertNull(myObj as NotMyDisposable);
		AssertThrows(() => { var dis = (NotMyDisposable)myObj; });
		
		Console.WriteLine("End");
	}
	
	private static void AssertNull(object o)
	{
		if(o == null) return;
		
		Console.WriteLine("FAIL: Not Null: " + o.GetType());
	}
	
	private static void AssertNotNull(object o)
	{
		if(o != null) return;
		
		Console.WriteLine("FAIL: Null");
	}
	private static void AssertThrows(Action action)
	{
		try
		{
			action();
			Console.WriteLine("FAIL: DID NOT THROW!");
		}
		catch
		{
			
		}
	}
	
}
public class MyDisposable : IDisposable
{
	public void Dispose()
	{}
}

public class NotMyDisposable : IDisposable
{
	public void Dispose()
	{}
}

 
using System;
using AssertLibrary;
                    
public class Program
{
    public static void Main()
    {
        Console.WriteLine("Hello World, Let's start testing!");
        
        int number = 300000000;
        try
        {
            short s = (short)number;
            Assert.IsFalse(true);
        }
        catch
        {
            Assert.IsTrue(true);
        }
        decimal d = (decimal)number;
        IDisposable myObj = new MyDisposable();
        AssertNotNull(myObj);
        AssertNull(myObj as NotMyDisposable);
        AssertThrows(() => { var dis = (NotMyDisposable)myObj; });

Cached Result

foo
2.1-hello
2.2-world
2.3-people
2.10-everywhere