add volunteers helper

app/controllers/admin/volunteers_controller.rb

@@ -1,5 +1,6 @@
 module Admin
   class VolunteersController < Admin::BaseController
+    include VolunteersHelper
     load_and_authorize_resource :conference, find_by: :short_title
 
     def index

app/helpers/admin/volunteers_helper.rb

@@ -0,0 +1,11 @@
+module Admin
+  module VolunteersHelper
+    def can_manage_volunteers(conference)
+      if (current_user.has_role? :organizer, conference) || (current_user.has_role? :volunteers_coordinator, conference)
+        true
+      else
+        false
+      end
+    end
+  end
+end

spec/helpers/events_helper_spec.rb

@@ -0,0 +1,21 @@
+require 'spec_helper'
+
+describe EventsHelper, type: :helper do
+  let(:conference) { create(:conference) }
+  let(:event) { create(:event, program: conference.program) }
+
+  describe '#registered_text' do
+    describe 'returns correct string' do
+      it 'when there are no registrations' do
+        expect(registered_text(event)).to eq 'Registered: 0'
+      end
+
+      it 'when there is 1 registration' do
+        event.require_registration = true
+        event.max_attendees = 3
+        event.registrations << create(:registration, user: event.submitter)
+        expect(registered_text(event)).to eq 'Registered: 1/3'
+      end
+    end
+  end
+end

spec/helpers/format_helper_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+describe FormatHelper, type: :helper do
+
+  describe 'markdown' do
+    it 'should return empty string for nil' do
+      expect(markdown(nil)).to eq ''
+    end
+
+    it 'should return HTML for header markdown' do
+      expect(Redcarpet::Markdown).to receive(:new).
+        with(Redcarpet::Render::HTML, autolink: true,
+                                      space_after_headers: true,
+                                      no_intra_emphasis: true).
+        and_call_original
+
+      expect(markdown('# this is my header')).to eq "<h1>this is my header</h1>\n"
+    end
+  end
+end

spec/helpers/users_helper_spec.rb

@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe UsersHelper, type: :helper do
+
+  describe 'show_roles' do
+    it 'formats the hash passed' do
+      roles = { 'organizer' => ['oSC16', 'oSC15'], 'cfp' => ['oSC16'] }
+      expect(show_roles(roles)).to eq 'Organizer (oSC16, oSC15), Cfp (oSC16)'
+    end
+  end
+end