public void ReturnsCorrectEightNeighbours()
{
var cell = new XYCellLocation(1, 1);
var expectedNeighbours = new[]
{
new XYCellLocation(0, 0), new XYCellLocation(1, 0), new XYCellLocation(2, 0),
new XYCellLocation(0, 1), new XYCellLocation(2, 1),
new XYCellLocation(0, 2), new XYCellLocation(1, 2), new XYCellLocation(2, 2)
};
Assert.That(
cell.Neighbours(),
Is.EquivalentTo(expectedNeighbours));
}
private static XYCellLocation LocationAt(int x, int y)
{
XYCellLocation location;
var key = new Tuple<int, int>(x, y);
if (!_locationCache.TryGetValue(key, out location))
{
location = new XYCellLocation(x, y);
_locationCache.Add(key, location);
}
return location;
}
protected bool Equals(XYCellLocation other)
{
return X == other.X && Y == other.Y;
}