RSpec -- 测试方法是否调用了它的块参数 [英] RSpec -- test if method called its block parameter

问题描述

我有一个将代码块作为参数的方法.问题是:如果这个方法调用了块，如何使用 RSpec 进行测试?

I have a method that takes block of code as an argument. The problem is: how to test using RSpec if this method called the block?

块可以在方法需要的任何范围内进行评估，不一定使用 yield 或 block.call.它被传递给另一个类，或者在匿名类对象或其他地方对其进行评估.为了让测试通过，作为方法调用的结果在某处评估块就足够了.

The block may be evaluated in any scope the method needs, not necessarily using a yield or block.call. It be passed to another class, or evaluated it in an anonymous class object or somewhere else. For the test to pass it is enough to evaluate the block somewhere as a result of the method call.

有没有办法使用 RSpec 来测试这样的东西?

Is there a way to test something like this using RSpec?

另见这个了解更多lets 和 mocks 的复杂案例.

See also this for more complex case with lets and mocks.

推荐答案

我通常会做类似的事情

a = 1
b.go { a = 2}
a.should == 2

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