public void GivenABlockOfColouredPixels_AndPixelPositionInBlockGiven__WhenFloodCalledWithPixelPos_ThenAdjacentPixelsAreReturned()
{
_colourGridService = new GridService(4, _startIndexPosition);
var expectedColour = "red";
var expectedNewFloodColour = "white";
var start = 1;
var end = 2;
_colourGridService.FillRow(expectedColour, 1, start, end);
_colourGridService.FillRow(expectedColour, 2, start, end);
_colourGridService.FloodBlockWithColour(expectedNewFloodColour, new PixelPosition {
X = 1, Y = 1
});
Assert.That(_colourGridService.GetPixelColour(new PixelPosition {
X = 2, Y = 1
}), Is.EqualTo(expectedNewFloodColour));
Assert.That(_colourGridService.GetPixelColour(new PixelPosition {
X = 1, Y = 1
}), Is.EqualTo(expectedNewFloodColour));
Assert.That(_colourGridService.GetPixelColour(new PixelPosition {
X = 1, Y = 2
}), Is.EqualTo(expectedNewFloodColour));
Assert.That(_colourGridService.GetPixelColour(new PixelPosition {
X = 2, Y = 2
}), Is.EqualTo(expectedNewFloodColour));
}
public void GivenABlockOfColouredPixels_AndPixelPositionIsInValid__WhenFloodCalledWithPixelPos_ThenExceptionThrown()
{
_colourGridService = new GridService(4, _startIndexPosition);
var expectedColour = "red";
var expectedNewFloodColour = "white";
_colourGridService.FillRow(expectedColour, 1, 1, 2);
_colourGridService.FillRow(expectedColour, 2, 1, 2);
Assert.Throws <ApplicationException>(() => _colourGridService.FloodBlockWithColour(expectedNewFloodColour, new PixelPosition {
X = 9, Y = 9
}));
}
public void GivenAGrid4x1AColourAndStartPositionAndEndPosition_WhenFillRowCalled_ThenPixelsAreColoured()
{
_colourGridService = new GridService(4, 1, _startIndexPosition);
var expectedColour = "red";
_colourGridService.FillRow(expectedColour, 1, 1, 2);
var grid = _colourGridService.GetGridContent();
Assert.That(grid[1, 1].Colour, Is.EqualTo(expectedColour));
Assert.That(grid[1, 2].Colour, Is.EqualTo(expectedColour));
}
public void GivenABlockOfColouredPixels_AndPixelPositionInBlockGivrn_ThenAdjacentPixelsAreReturned()
{
_colourGridService = new GridService(4, _startIndexPosition);
var expectedColour = "red";
_colourGridService.FillRow(expectedColour, 1, 1, 2);
_colourGridService.FillRow(expectedColour, 2, 1, 2);
var adjecent = _colourGridService.GetAllAdjacentSameColourPixels(new PixelPosition {
X = 1, Y = 1
});
var grid = _colourGridService.GetGridContent();
var resultPixel = grid[1, 1];
Assert.That(resultPixel.Colour, Is.EqualTo(expectedColour));
var pixelPositions = adjecent as PixelPosition[] ?? adjecent.ToArray();
Assert.That(pixelPositions.Count(), Is.EqualTo(4));
Assert.That(pixelPositions.Any(p => p.X == 1 && p.Y == 1));
Assert.That(pixelPositions.Any(p => p.X == 2 && p.Y == 1));
Assert.That(pixelPositions.Any(p => p.X == 1 && p.Y == 2));
Assert.That(pixelPositions.Any(p => p.X == 2 && p.Y == 2));
}
public void GivenAPixelPositionWithAnOutOfBandEnd_WhenFillRowIsCalled_ThenExceptionThrown()
{
_colourGridService = new GridService(4, _startIndexPosition);
Assert.Throws <ApplicationException>(() => _colourGridService.FillRow("red", 0, 0, 9));
}