public void BitScanForwardTest()
{
var index = BitBoardHelper.BitScanForward(1);
Assert.AreEqual(0, index);
index = BitBoardHelper.BitScanForward(128);
Assert.AreEqual(7, index);
index = BitBoardHelper.BitScanForward((ulong)Math.Pow(2, 27));
Assert.AreEqual(27, index);
index = BitBoardHelper.BitScanForward((ulong)Math.Pow(2, 64));
Assert.AreEqual(63, index);
}