Eliminate test example duplication with shared examples

spec/requests/static_pages_spec.rb

@@ -5,30 +5,34 @@
 
   describe 'Home page' do
     before { visit root_path }
+    let(:heading)    { 'Sample App' }
+    let(:page_title) { '' }
 
-    it { should have_content('Sample App') }
-    it { should have_title(full_title('')) }
+    it_should_behave_like 'all static pages'
     it { should_not have_title('| Home') }
   end
 
   describe 'Help page' do
     before { visit help_path }
+    let(:heading)    { 'Help' }
+    let(:page_title) { 'Help' }
 
-    it { should have_content('Help') }
-    it { should have_title(full_title('Help')) }
+    it_should_behave_like 'all static pages'
   end
 
   describe 'About page' do
     before { visit about_path }
+    let(:heading)    { 'About Us' }
+    let(:page_title) { 'About' }
 
-    it { should have_content('About Us') }
-    it { should have_title(full_title('About')) }
+    it_should_behave_like 'all static pages'
   end
 
   describe 'Contact page' do
     before { visit contact_path }
+    let(:heading)    { 'Contact' }
+    let(:page_title) { 'Contact' }
 
-    it { should have_selector('h1', text: 'Contact') }
-    it { should have_title(full_title('Contact')) }
+    it_should_behave_like 'all static pages'
   end
 end

spec/support/shared/static_pages_examples.rb

@@ -0,0 +1,4 @@
+shared_examples_for 'all static pages' do
+  it { should have_selector('h1', text: heading) }
+  it { should have_title(full_title(page_title)) }
+end