Provides random values for simple types

TestHelpers.Random.cs

    public static class Random
    {
        private static readonly System.Random rand = new System.Random();

        public static int Int(int maxValue = int.MaxValue)
        {
            return rand.Next(maxValue);
        }
        public static bool Bool()
        {
            return rand.Next() % 2 == 0;
        }

        //Decimal - http://stackoverflow.com/questions/609501/generating-a-random-decimal-in-c/609529#609529
        public static decimal Decimal()
        {
            byte scale = (byte)rand.Next(29);
            bool sign = rand.Next(2) == 1;
            return new decimal(rand.NextInt32(),
                               rand.NextInt32(),
                               rand.NextInt32(),
                               sign,
                               scale);
        }
        private static int NextInt32(this System.Random rng)
        {
            unchecked
            {
                int firstBits = rng.Next(0, 1 << 4) << 28;
                int lastBits = rng.Next(0, 1 << 28);
                return firstBits | lastBits;
            }
        }

        public static string String(int size = 50)
        {
            var builder = new StringBuilder();
            char ch;
            for (int i = 0; i < size; i++)
            {
                ch = Convert.ToChar(Convert.ToInt32(Math.Floor(26 * rand.NextDouble() + 65)));
                builder.Append(ch);
            }
            return builder.ToString();
        }
        public static T RandomEnum<T>()
        {
            T[] values = (T[])Enum.GetValues(typeof(T));
            return values[rand.Next(0, values.Length)];
        }
    }