Paginator

spec/features/smoke_spec.rb

@@ -203,8 +203,49 @@
           page.should have_content('Displaying 1 Post')
         end
       end
-
     end
+
+    context 'with 100 posts' do
+      let(:per_page) { 30 }
+      let(:posts_size) { 100 }
+
+      before do
+        posts_size.times { |n|
+          Post.create!(title: "Quick Brown Fox #{n}", body: 'The quick brown fox jumps over the lazy dog.', view_count: 5, admin_user: admin_user, other_user: other_user)
+        }
+
+        click_on 'Posts'
+      end
+
+      describe "paginator" do
+        it "must have paginator with 4 pages" do
+          page.should have_css('.pagination > .page.current')
+          page.all(:css, '.pagination > .page').size.should == 4
+        end
+
+        it "must show each page correctly" do
+          # temprorary go to page 2
+          page.find('.pagination > .page > a', text: '2').click
+
+          nbsp = Nokogiri::HTML(" ").text
+
+          (1..4).each do |page_number|
+            page.find('.pagination > .page > a', text: page_number).click
+            page.find('.pagination_information').should have_content('Displaying Posts')
+
+            offset = (page_number - 1) * per_page
+            collection_size = [per_page, posts_size - (page_number - 1) * per_page].min
+
+            display_total_text = I18n.t 'active_admin.pagination.multiple', :model => 'Posts', :total => posts_size,
+                :from => offset + 1, :to => offset + collection_size
+
+            pagination_information = page.find('.pagination_information').native.to_s.gsub(nbsp,' ')
+            pagination_information.should include(display_total_text.gsub(' ', ' '))
+          end
+        end
+      end
+    end # context 'with 100 posts'
+
   end
 
 end

test_app/app/admin/posts.rb

@@ -1,4 +1,5 @@
 ActiveAdmin.register Post do
+  config.per_page = 30
 
   filter :title
   filter :body