public void FromHexTest()
{
for (int i = 0; i <= byte.MaxValue; i++)
{
byte b = (byte)i;
string hexByte = b.ToHex();
byte actual = ByteExtensions.FromHex(hexByte);
Assert.AreEqual(b, actual, b.ToString());
}
Assert.AreEqual(ByteExtensions.FromHex(null), 0);
Assert.AreEqual(ByteExtensions.FromHex(""), 0);
Assert.AreEqual(ByteExtensions.FromHex("abc"), 0);
Assert.AreEqual(ByteExtensions.FromHex("ge"), 0);
Assert.AreEqual(ByteExtensions.FromHex("çá"), 0);
Assert.AreEqual(ByteExtensions.FromHex("=="), 0);
Assert.AreEqual(ByteExtensions.FromHex("="), 0);
Assert.AreEqual(ByteExtensions.FromHex("m"), 0);
Assert.AreEqual(ByteExtensions.FromHex("a"), 10);
}