public void Test_clone()
{
DateFormat format = DateFormat.GetInstance();
DateFormat clone = (DateFormat)format.Clone();
NUnit.Framework.Assert.IsTrue(format.Equals(clone), "Clone not equal");
clone.GetNumberFormat().SetMinimumFractionDigits(123);
NUnit.Framework.Assert.IsTrue(!format.Equals(clone), "Clone shares NumberFormat");
}