first raw implementation of the form

spec/helpers/application_helper_spec.rb

@@ -0,0 +1,10 @@
+require 'spec_helper'
+
+describe ApplicationHelper do
+  describe '.title' do
+    it 'sets content for :title' do
+      helper.title 'test'
+      expect(view.content_for :title).to eq 'test'
+    end
+  end
+end