public void TestGetNearest1()
{
Coordinate coordinate1 = new Coordinate();
coordinate1.Longitude = -10;
coordinate1.Latitude = -10;
Coordinate coordinate2 = new Coordinate();
coordinate2.Longitude = 10;
coordinate2.Latitude = 10;
sut.Add(coordinate1);
sut.Add(coordinate2);
int index = sut.GetNearestIndex(-1, -1);
Assert.AreEqual(0, index);
}