public void TestCalculateOrbits()
{
string input = @"COM)B,B)C,C)D,D)E,E)F,B)G,G)H,D)I,E)J,J)K,K)L";
var parser = new InputParser(input.Split(","));
parser.Parse();
Assert.Single(parser.Roots);
InputParser.Dump(parser.Roots.First(), console.WriteLine);
Assert.Equal(3, InputParser.CalculateDirectAndIndirectOrbits(parser.AllObjects["D"]));
Assert.Equal(7, InputParser.CalculateDirectAndIndirectOrbits(parser.AllObjects["L"]));
Assert.Equal(0, InputParser.CalculateDirectAndIndirectOrbits(parser.AllObjects["COM"]));
var result = parser.AllObjects.Values.Sum(InputParser.CalculateDirectAndIndirectOrbits);
Assert.Equal(42, result);
}