public void OneConnectedGraphTest()
{
var connector = new GraphManager(connectionsList, elementsList);
connector.Connect(0, 2);
Assert.IsTrue(connectionsList[1].Connected);
Assert.AreEqual(1, elementsList[0].TaxonNumber);
Assert.AreEqual(1, elementsList[1].TaxonNumber);
Assert.AreEqual(1, elementsList[2].TaxonNumber);
}