public void ListTest()
{
var s0 = "(1,2,3)";
var d = new TabStops(s0);
Assert.Equal(1, d[0]);
Assert.Throws <NotImplementedException>(() => d[0] = 2);
Assert.Equal(3, d.Count);
Assert.True(d.IsReadOnly);
Assert.Throws <NotImplementedException>(() => d.Add(2));
Assert.Throws <NotImplementedException>(() => d.Clear());
Assert.Contains(2, d);
int[] iv0 = { 1, 2, 3 };
int[] iv1 = new int[3];
d.CopyTo(iv1, 0);
Assert.Equal(iv0, iv1);
Assert.Equal(1, d.IndexOf(2));
Assert.Throws <NotImplementedException>(() => d.Insert(0, 2));
Assert.Throws <NotImplementedException>(() => d.Remove(2));
Assert.Throws <NotImplementedException>(() => d.RemoveAt(0));
}
