public void Build_a_chart_4_satellites_at_depth_1_and_2()
{
var chart = new AstronomicalChart(new AstronomicalObject("com"));
var a = new AstronomicalObject("a");
chart.Root.AddSatellite(a);
var a2 = new AstronomicalObject("a");
a.AddSatellite(a2);
var b = new AstronomicalObject("b");
chart.Root.AddSatellite(b);
var b2 = new AstronomicalObject("b2");
a.AddSatellite(b2);
var calculator = new ChecksumCalculator();
var checksum = calculator.GetChecksum(chart);
Assert.AreEqual(6, checksum);
}
