public void TestToString()
{
UnitCartesian test1 = new UnitCartesian(1.0, 0.0, 0.0);
UnitCartesian test2 = new UnitCartesian(0.0, 1.0, 0.0);
UnitCartesian test3 = new UnitCartesian(0.0, 0.0, 1.0);
Assert.AreEqual("1, 0, 0", test1.ToString());
Assert.AreEqual("0, 1, 0", test2.ToString());
Assert.AreEqual("0, 0, 1", test3.ToString());
}