在辅助规范中存根控制器辅助方法 [英] Stub a controller helper method in a helper spec

问题描述

在我的 application_controller.rb 中:

helper_method :current_brand
def current_brand
  @brand ||= Brand.find_by_organization_id(current_user.organization_id)
end

在我的助手 something_helper.rb

def brands
  return [] unless can? :read, Brand
  # current_brand is called
end

我正在为 something_helper 编写规范并希望存根 current_brand

I am writing a spec for something_helper and wish to stub current_brand

describe SomethingHelper do
  before :each do
    helper.stub!(:can?).and_return(true) # This stub works
  end

  it "does the extraordinary" do
    brand = Factory.create(:brand)
    helper.stub!(:current_brand).and_return(brand) # This stub doesnt work
    helper.brands.should_not be_empty
  end
end

结果 NameError:#<#<Class:0x000001068fd188>:0x0000010316f6f8>

我也尝试在 self 和 controller 上做 stub! .奇怪的是，当我在 self 上存根时，helper.stub!(:can?).and_return(true) 被取消注册.

I have tried doing the stub! on self and controller as well. Strangely, when I stub on self, the helper.stub!(:can?).and_return(true) gets unregistered.

推荐答案

好吧，其他的怎么样...你真的在问 Brand.for_user

OK, how about something else... You're really asking Brand.for_user

所以:

class Brand
  ...
  def self.for_user(user)
    find_by_organization_id(user.organization_id)
  end
end

然后，您只需:

brand = mock(Brand)
Brand.stub(:for_user => brand)

或类似的东西...如果您将该逻辑提取到易于存根的东西中，它会使事情变得更容易.一个 Presenter 类，或者这个静态方法.

Or something similar... If you extract that logic out to something that is easily stubbable, it'll make things easier. A Presenter class, perhaps, or this static method.

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