public SquarePlacement Select(Square[] allSquares, int size)
{
var placements = _findAvailableSquarePlacements.For(allSquares, size);
var randomIndex = _random.Next(0, placements.Length);
return(placements[randomIndex]);
}
public WhenSelect()
{
_gridSquares = CreateGridSquares();
_availablePlacements = Substitute.For <IFindAvailableSquarePlacements>();
_squarePlacements = new List <SquarePlacement>()
{
new SquarePlacement(_gridSquares.Take(5).ToArray()),
new SquarePlacement(_gridSquares.Skip(5).Take(5).ToArray()),
new SquarePlacement(_gridSquares.Skip(10).Take(5).ToArray()),
new SquarePlacement(_gridSquares.Skip(15).Take(5).ToArray()),
new SquarePlacement(_gridSquares.Skip(20).Take(5).ToArray())
};
_availablePlacements.For(_gridSquares, 5).Returns(_squarePlacements.ToArray());
// Returns 0, 2, 3, 3 with this seed
_random = Substitute.For <Random>(1);
_selector = new RandomPlacementSelector(_availablePlacements, _random);
}