exchangerate

Notice that at no point did I write a class that implements the ExchangeRate interface .

注意，我可没有编写实现ExchangeRate接口的类。

The ExchangeRate interface was small and simple enough that I could have easily written the mock class manually .

ExchangeRate接口很小很简单，很容易为它手工编写mock类。

What these goods or services cost the American consumer or the American government will depend on the exchangerate the dollar price of the particular foreign currency .

这些商品或服务，要花去美国的消费者或美国政府多少钱，这将取决于汇率某种特定外币的美元价格。

And even if it did by some miracle return ExchangeRate , what happens when I need to mock an instance of a different interface ?

即使它能够通过某种奇迹返回ExchangeRate，但是如果需要模拟另一个接口的实例，又会怎么样呢？

Furthermore , there is absolutely no way the EasyMock . createMock () method can be typed to return an instance of ExchangeRate , a type it never knew about and that I created just for this article .

另外，EasyMock.createMock（）方法绝对无法返回ExchangeRate的实例，它根本不知道这个类型，这个类型是我为本文创建的。