Dashboard Presenter

dashboard_presenter.rb

class DashboardPresenter < ClassicPresenter::Base

  def navigation
    if context.controller_name == 'vendors'
      context.render 'shared/dashboard/vendor_navigation'
    end
  end

end

dashboard_presenter_spec.rb

require 'spec_helper'

describe DashboardPresenter do
  let(:context) { mock } #se neste caso vc quer apenas verificar o render, entao pode ser apenas um mock
  subject { described_class.new(nil, context) }

  it 'should render navigation' do
    subject.context.should_receive(:render).with('shared/dashboard/vendor_navigation')
    subject.navigation
  end
end


#output

F

Failures:

  1) DashboardPresenter should render navigation
     Failure/Error: subject.context.should_receive(:render).with('shared/dashboard/vendor_navigation')
       (nil).render("shared/dashboard/vendor_navigation")
           expected: 1 time
           received: 0 times
     # ./spec/presenters/dashboard_presenter_spec.rb:8:in `block (2 levels) in <top (required)>'

Finished in 0.01114 seconds
1 example, 1 failure

Failed examples:

rspec ./spec/presenters/dashboard_presenter_spec.rb:7 # DashboardPresenter should render navigation

index.html.erb

<% present DashboardPresenter do |presenter| %> #vc nao precisa passar o controler name pois ele ja esta acessivel a partir de context
  <%= presenter.navigation %>
<% end %>