public void Visit_FloodSpillerAnd3x3OpenArea_All9PositionsAreAddedToResultAndFirstElementIsStartingPosition()
{
var startingPosition = new Position(1, 1);
int[,] matrix = new int[3, 3];
int positionsCount = matrix.Length;
var addToListProcessor = new AddToListPositionVisitor();
Action <int, int> positionVisitor = addToListProcessor.Visit;
var parameters = new FloodParameters(startingPosition.X, startingPosition.Y)
{
ProcessStartAsFirstNeighbour = true,
SpreadingPositionVisitor = positionVisitor
};
FloodSpiller spiller = new FloodSpiller();
spiller.SpillFlood(parameters, matrix);
addToListProcessor.Result.Count.Should().Be(positionsCount);
addToListProcessor.Result.First().Should().Be(startingPosition);
for (int x = 0; x < matrix.GetLength(0); x++)
{
for (int y = 0; y < matrix.GetLength(1); y++)
{
addToListProcessor.Result.Should().Contain(new Position(x, y));
}
}
}
public void Visit_FloodScanlineSpillerAnd3x3OpenArea_SomePositionsAreAddedToResultAndFirstElementIsStartingPosition()
{
var startingPosition = new Position(1, 1);
int[,] matrix = new int[3, 3];
var addToListProcessor = new AddToListPositionVisitor();
Action <int, int> positionVisitor = addToListProcessor.Visit;
var parameters = new FloodParameters(startingPosition.X, startingPosition.Y)
{
ProcessStartAsFirstNeighbour = true,
SpreadingPositionVisitor = positionVisitor
};
FloodSpiller spiller = new FloodSpiller();
spiller.SpillFlood(parameters, matrix);
// scanline doesn't visit all processed neigbhours, so we can only assume that at least one position will be visited
addToListProcessor.Result.Count.Should().BeGreaterOrEqualTo(1);
addToListProcessor.Result.First().Should().Be(startingPosition);
}
