public void Count_ThreeByThreeWithFourAliveNeighbors_ReturnsFour()
{
GameBoardCell[,] cells =
{
{
Dead(), Alive(), Alive()
},
{
Dead(), Alive(), Alive()
},
{
Dead(), Dead(), Alive()
}
};
var coordinates = new CellCoordinates
{
X = 1,
Y = 1
};
var subject = new NeighborCounter();
int count = subject.Count( cells, coordinates );
count.Should().Be( 4 );
}
public int Count( GameBoardCell[,] gameBoardCells, CellCoordinates coordinates )
{
int numberOfLivingNeighbors = 0;
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X - 1, coordinates.Y + 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X , coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X, coordinates.Y + 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y - 1 );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y );
numberOfLivingNeighbors += PlusOneIfCellIsAlive( gameBoardCells, coordinates.X + 1, coordinates.Y + 1 );
return numberOfLivingNeighbors;
}
public void Count_TwoByTwoWithTwoAliveNeighbors_ReturnsTwo()
{
GameBoardCell[,] cells =
{
{
Dead(), Alive()
},
{
Dead(), Alive()
}
};
var coordinates = new CellCoordinates
{
X = 0, Y = 0
};
var subject = new NeighborCounter();
int count = subject.Count( cells, coordinates );
count.Should().Be( 2 );
}
