如何在application_controller中测试通用方法

Question

I have an auth method and want to put it in my application_controller.

class ApplicationController < ActionController::Base  
  helper_method :check_cred

  def check_cred
    "within check cred"
  end

but if I do this

require 'spec_helper'

describe ApplicationController do
  it 'should check_cred', task050: true do
    check_cred.should == 'within check cred'
  end
end

I get:

 undefined local variable or method `check_cred' for #<RSpec::Core::ExampleGroup::Nested_9:0x007ff5e3e40558>

How would I call a method like this to test?

thx

Answer 1

RSpec controller specs wrap ActionController::TestCase::Behavior , which provides some instance variables to be used during tests:

Special instance variables

ActionController::TestCase will also automatically provide the following instance variables for use in the tests:

@controller : The controller instance that will be tested.

So you may be able to do the following:

it 'should check_cred', task050: true do
  @controller.check_cred.should == 'within check cred'
end

Alternatively, you could move this helper method out into a separate helper module, and use an RSpec helper spec to perform the test, which may prove to be a better way to structure this test.