public void TestMethod()
{
SingleInstance singleInstance = new SingleInstance();
var container = singleInstance.Init();
var hashCodes = singleInstance.Resolve(container);
//筛选不同的元素
var unique = hashCodes.GroupBy(i => i)
.Where(g => g.Count() == 1)
.Select(g => g.ElementAt(0));
Assert.AreEqual(0, unique.Count());
}