public void FloodPixels_ColorsAllAdjacentPixelsOfSameColor()
{
// Arrange
PixelPainter pixelPainter = new PixelPainter(9, 9);
pixelPainter.Grid[new Point(2, 3)] = Color.Blue;
pixelPainter.Grid[new Point(3, 2)] = Color.Green;
pixelPainter.Grid[new Point(3, 3)] = Color.Green;
pixelPainter.Grid[new Point(3, 4)] = Color.Green;
pixelPainter.Grid[new Point(3, 5)] = Color.Green;
pixelPainter.Grid[new Point(3, 6)] = Color.Green;
pixelPainter.Grid[new Point(4, 3)] = Color.Blue;
pixelPainter.Grid[new Point(5, 3)] = Color.Blue;
pixelPainter.Grid[new Point(5, 4)] = Color.Blue;
pixelPainter.Grid[new Point(6, 3)] = Color.Blue;
pixelPainter.Grid[new Point(6, 4)] = Color.Blue;
pixelPainter.Grid[new Point(7, 3)] = Color.Blue;
pixelPainter.Grid[new Point(8, 2)] = Color.Yellow;
pixelPainter.Grid[new Point(8, 4)] = Color.Blue;
pixelPainter.Grid[new Point(8, 5)] = Color.Blue;
// Act
pixelPainter.FloodPixels(new Point(6, 3), Color.Red);
var numberOfFloodedPixels = pixelPainter.Grid.Values.Where(x => x == Color.Red).Count();
// Assert
Assert.AreEqual(6, numberOfFloodedPixels);
}
public void FloodPixels_StopsAtGridBoundaries()
{
// Arrange
PixelPainter pixelPainter = new PixelPainter(9, 9);
// Act
pixelPainter.FloodPixels(new Point(1, 1), Color.Red);
var numberOfFloodedPixels = pixelPainter.Grid.Values.Where(x => x == Color.Red).Count();
// Assert
Assert.AreEqual(81, numberOfFloodedPixels);
}