public void Fill()
{
FillFunc fillFunc = (row, col) => { return((row + 1) + (col + 1)); };
coordinationalMatrix.Fill(fillFunc);
size = 3;
values = new double[] { 2, 3, 4, 3, 4, 4, 6 };
columns = new int[] { 0, 1, 2, 0, 1, 0, 2 };
rows = new int[] { 0, 0, 0, 1, 1, 2, 2 };
CoordinationalMatrix coordinat = new CoordinationalMatrix(rows, columns, values, size);
Assert.True(new HashSet <(double, int, int)>(coordinationalMatrix).SetEquals(coordinat));
}