public void GivenAnFillColumnWithAColourAndStartPositionAndEndPosition_ThenPixelsAreColoured()
{
_colourGridService = new GridService(4, _startIndexPosition);
var expectedColour = "red";
_colourGridService.FillColumn(expectedColour, 1, 1, 2);
var grid = _colourGridService.GetGridContent();
Assert.That(grid[1, 1].Colour, Is.EqualTo(expectedColour));
Assert.That(grid[2, 1].Colour, Is.EqualTo(expectedColour));
}
public void GivenAPixelPositionWithAnOutOfBandEnd_WhenFillColumnIsCalled_ThenExceptionThrown()
{
_colourGridService = new GridService(4, _startIndexPosition);
Assert.Throws <ApplicationException>(() => _colourGridService.FillColumn("red", 0, 0, 9));
}