使用 Rspec 存根链式方法 [英] Stubbing Chained Methods with Rspec

问题描述

我想调用一个仅返回一条记录的named_scope，但named_scope返回一个数组，这没什么大不了的，因为我可以将它与.first链接起来:

I want to call a named_scope that will only return one record, but the named_scope returns an array, that's not a big deal as I can just chain it with .first:

Model.named_scope(param).first

这是有效的，我正在努力解决的是如何存根链式调用.有没有人有关于我将如何通过 Rspec 模拟实现这一目标的参考或答案?

and this works, what I am struggling with is how to stub the chained call. Does anyone have a reference or an answer on how I would go about achieving this with Rspec mocking?

推荐答案

我想出了一些办法.

Client.stub!(:named_scope).and_return(@clients = mock([Client]))
@clients.stub!(:first).and_return(@client = mock(Client))

它允许我调用我的控制器:

which allows me to call my controller:

@client = Client.named_scope(param).first

它有效，但有更好的解决方案吗?

It works, but is there a better solution?

rspec 1.2.6 的发布允许我们使用 stub_chain 这意味着它现在可以是:

The release of rspec 1.2.6 allows us to use stub_chain meaning it can now be:

Client.stub_chain(:named_scope, :chained_call).and_return(@clients = [mock(Client)])

这是我的头等大事，总是检查 api 以了解具体情况:)

This was top of my head, as always check the api for specifics :)

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