public void TestToString()
{
StringBuilder s = new StringBuilder(80);
s.Append((-Math.PI).ToString(CultureInfo.CurrentCulture));
s.Append(", ");
s.Append(Math.PI.ToString(CultureInfo.CurrentCulture));
UnitSpherical test = new UnitSpherical(-Math.PI, Math.PI);
Assert.AreEqual(s.ToString(), test.ToString());
}