title: stubbing helpers using mocha
body: <pre><code>it "should have edit button if user has permission to edit" do
    EntitiesHelper.stubs(:permission_to_edit_entity?).returns(true)
    get :index
    @entities[0..3].each do |entity|
      response.should have_selector("form",
        :method =&gt; "get",
        :action =&gt; "/entities/edit/#{entity[:id]}") do |form|
          form.should have_selector("input", :value =&gt; "Edit")
      end
    end
  end
  </code></pre>
  
  <p>I am trying to write a simple test case which tests that an edit button is showed if the user has permission to edit. I am trying to use stubbing for this. However, it doesn't seem to work. The output view does not show the edit button next to every single entity which I would expect if the stubbing works. I am new to mocha and stubbing - I am doing something wrong here?</p>
  
  <p>Thanks!</p>