public void GetLastWeight()
{
Mock <IWeighted> mockWeighted1 = new Mock <IWeighted>();
mockWeighted1.SetupGet(m => m.Weight).Returns(1);
Mock <IWeighted> mockWeighted2 = new Mock <IWeighted>();
mockWeighted2.SetupGet(m => m.Weight).Returns(2);
int nextWeight = U.GetNextWeight(new IWeighted[] { mockWeighted1.Object, mockWeighted2.Object });
Assert.AreEqual(3, nextWeight);
}