public void Fill()
{
FillFunc fillFunc = (row, col) => { return((row + 1) + (col + 1)); };
skylineMatrix.Fill(fillFunc);
di = new double[] { 2, 4, 6 };
al = new double[] { 3, 4, 5 };
au = new double[] { 3, 4, 5 };
ia = new int[] { 1, 1, 2, 4 };
SkylineMatrix skyline = new SkylineMatrix(di, ia, al, au);
Assert.True(new HashSet <(double, int, int)>(skylineMatrix).SetEquals(skyline));
}