public void Should_Give_Neighbor()
{
var hasher = new Geohasher();
Assert.Equal("u33dc1", hasher.GetNeighbor("u33dc0", Direction.North));
Assert.Equal("u33dc3", hasher.GetNeighbor("u33dc0", Direction.NorthEast));
Assert.Equal("u33dc2", hasher.GetNeighbor("u33dc0", Direction.East));
Assert.Equal("u33d9r", hasher.GetNeighbor("u33dc0", Direction.SouthEast));
Assert.Equal("u33d9p", hasher.GetNeighbor("u33dc0", Direction.South));
Assert.Equal("u33d8z", hasher.GetNeighbor("u33dc0", Direction.SouthWest));
Assert.Equal("u33dbb", hasher.GetNeighbor("u33dc0", Direction.West));
Assert.Equal("u33dbc", hasher.GetNeighbor("u33dc0", Direction.NorthWest));
}