Mocking Clojure协议 [英] Mocking Clojure protocols

问题描述

可以使用流行的Java模拟框架之一，例如 EasyMock 或 Mockito 用于模拟用 defprotocol 定义的Clojure协议？如果是，如何？

Can one of the popular Java mocking frameworks like EasyMock or Mockito be used to mock Clojure protocols defined with defprotocol? If so, how?

推荐答案

您应该能够使用任何模拟库模拟协议。在封面下，每个协议使用Java接口作为实现细节，你可以只是模拟该接口。

You should be able to mock protocols using any mock library. Under the covers, every protocol uses a Java interface as an implementation detail, and you could just mock that interface.

也就是说，不要这样做！在Java中嘲笑是荒谬复杂的，因为反射，保护级别，最终类等。任何时候，你想要一个实现协议的Clojure对象，只需调用 reify ，例如

That said, don't do this! Mocking in Java is absurdly complex because of reflection, protection levels, final classes, etc. Any time you want a Clojure object that implements a protocol, simply call reify, e.g.

 (defprotocol Foo (method-a [_]) (method-b [_]))
 -> Foo

 (let [stub (reify Foo (method-a [_] :stubbed))] 
   (method-a stub))
 -> :stubbed

请注意，您不需要存根您不打算调用的方法。

Note that you need not stub the methods you don't plan to call.

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