Guard class, used for guard clauses and argument validation.

using System;
using System.Collections;
using System.Diagnostics.CodeAnalysis;
using System.IO;

/// <summary>
/// Guard class, used for guard clauses and argument validation.
/// </summary>
internal static class Guard
{
    /// <summary/>
    public static void ArgumentNotNull(string argName, object argValue)
    {
        if (argValue == null)
        {
            throw new ArgumentNullException(argName);
        }
    }

    /// <summary/>
    [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "This method may not be called by all users of Guard.")]
    public static void ArgumentNotNullOrEmpty(string argName, IEnumerable argValue)
    {
        ArgumentNotNull(argName, argValue);

        if (!argValue.GetEnumerator().MoveNext())
        {
            throw new ArgumentException("Argument was empty", argName);
        }
    }

    /// <summary/>
    [SuppressMessage("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode", Justification = "This method may not be called by all users of Guard.")]
    public static void ArgumentValid(string argName, string message, bool test)
    {
        if (!test)
        {
            throw new ArgumentException(message, argName);
        }
    }
}