public void FindOrderTest()
{
List <Order> query1 = orderServer.FindOrder(null, null);
List <Order> query2 = orderServer.FindOrder("陈家棋", null);
List <Order> query3 = orderServer.FindOrder(null, "《如何统治非洲大地》");
List <Order> query4 = orderServer.FindOrder("陈家棋", "《如何不停学习》");
Assert.AreEqual(query1, cjqOrder);
Assert.AreEqual(query2, cjqOrder);
Assert.AreEqual(query3, cjqOrder);
Assert.AreEqual(query4, cjqOrder);
}