public virtual void TestMerge3()
{
IList <string> a = Arrays.AsList("a", "b", "d", "e");
IList <string> b = Arrays.AsList("b", "c", "d", "e");
IList <string> c = Arrays.AsList("a", "b", "c", "e", "f");
IComparator <string> comparator = IComparer.NaturalOrder();
IEnumerator <Triple <string, string, string> > iter = Iterables.Merge(a, b, c, comparator).GetEnumerator();
NUnit.Framework.Assert.AreEqual(iter.Current, new Triple <string, string, string>("b", "b", "b"));
NUnit.Framework.Assert.AreEqual(iter.Current, new Triple <string, string, string>("e", "e", "e"));
NUnit.Framework.Assert.IsTrue(!iter.MoveNext());
}