public static void TestConstructors()
{
Assert.AreEqual(new Position(File.A, 1), new Position("A1"));
Assert.AreEqual(new Position(File.B, 2), new Position("B2"));
Assert.AreEqual(new Position(File.C, 3), new Position("C3"));
Assert.AreEqual(new Position(File.D, 4), new Position("D4"));
Assert.AreEqual(new Position(File.E, 5), new Position("E5"));
Assert.AreEqual(new Position(File.F, 6), new Position("F6"));
Assert.AreEqual(new Position(File.G, 7), new Position("G7"));
Assert.AreEqual(new Position(File.H, 8), new Position("H8"));
}