kaminari--kaminari/spec/helpers/sinatra_helpers_spec.rb

require 'spec_helper'
require 'spec_helper_for_sinatra'

ERB_TEMPLATE_FOR_PAGINATE = <<EOT
<div>
<ul>
<% @users.each  do |user| %>
  <li class="user_info"><%= user.id %></li>
<% end %>
</ul>
<%= paginate @users, @options %>
</div>
EOT

ERB_TEMPLATE_FOR_NEXT_PAGE = <<EOT
<div>
<ul>
<% @users.each  do |user| %>
  <li class="user_info"><%= user.id %></li>
<% end %>
</ul>
<%= link_to_next_page(@users, "Next!", {:id => 'next_page_link'}.merge(@options || {})) %>
</div>
EOT

describe 'Kaminari::Helpers::SinatraHelper' do
  before do
    50.times {|i| User.create! :name => "user#{i}"}
  end

  describe '#paginate' do
    before do
      mock_app do
        register Kaminari::Helpers::SinatraHelpers
        get '/users' do
          @page = params[:page] || 1
          @users = User.page(@page)
          @options = {}
          erb ERB_TEMPLATE_FOR_PAGINATE
        end
      end
    end

    context 'normal paginations with Sinatra' do
      before { get '/users' }

      it 'should have a navigation tag' do
        last_document.search('nav.pagination').should_not be_empty
      end

      it 'should have pagination links' do
        last_document.search('.page a').should have_at_least(1).items
        last_document.search('.next a').should have_at_least(1).items
        last_document.search('.last a').should have_at_least(1).items
      end

      it 'should point to current page' do
        last_document.search('.current').text.should match(/1/)

        get '/users?page=2'
        last_document.search('.current').text.should match(/2/)
      end

      it 'should load 25 users' do
        last_document.search('li.user_info').should have(25).items
      end

      it 'should preserve params' do
        get '/users?foo=bar'
        last_document.search('.page a').should(be_all do |elm|
          elm.attribute('href').value =~ /foo=bar/
        end)
      end
    end

    context 'optional paginations with Sinatra' do
      it 'should have 5 windows with 1 gap' do
        mock_app do
          register Kaminari::Helpers::SinatraHelpers
          get '/users' do
            @page = params[:page] || 1
            @users = User.page(@page).per(5)
            @options = {}
            erb ERB_TEMPLATE_FOR_PAGINATE
          end
        end

        get '/users'
        last_document.search('.page').should have(6).items
        last_document.search('.gap').should have(1).item
      end

      it 'should controll the inner window size' do
        mock_app do
          register Kaminari::Helpers::SinatraHelpers
          get '/users' do
            @page = params[:page] || 1
            @users = User.page(@page).per(3)
            @options = {:window => 10}
            erb ERB_TEMPLATE_FOR_PAGINATE
          end
        end

        get '/users'
        last_document.search('.page').should have(12).items
        last_document.search('.gap').should have(1).item
      end

      it 'should specify a page param name' do
        mock_app do
          register Kaminari::Helpers::SinatraHelpers
          get '/users' do
            @page = params[:page] || 1
            @users = User.page(@page).per(3)
            @options = {:param_name => :user_page}
            erb ERB_TEMPLATE_FOR_PAGINATE
          end
        end

        get '/users'
        last_document.search('.page a').should(be_all do |elm|
          elm.attribute('href').value =~ /user_page=\d+/
        end)
      end
    end
  end

  describe '#link_to_next_page' do
    before do
      mock_app do
        register Kaminari::Helpers::SinatraHelpers
        get '/users' do
          @page = params[:page] || 1
          @users = User.page(@page)
          erb ERB_TEMPLATE_FOR_NEXT_PAGE
        end

        get '/users_placeholder' do
          @page = params[:page] || 1
          @options = {:placeholder => %{<span id='no_next_page'>No Next Page</span>}}
          @users = User.page(@page)
          erb ERB_TEMPLATE_FOR_NEXT_PAGE
        end
      end
    end

    context 'having more page' do
      it 'should have a more page link' do
        get '/users'
        last_document.search('a#next_page_link').should be_present
        last_document.search('a#next_page_link').text.should match(/Next!/)
      end
    end

    context 'the last page' do
      it 'should not have a more page link' do
        get '/users?page=2'
        last_document.search('a#next_page_link').should be_empty
      end

      it 'should have a no more page notation using placeholder' do
        get '/users_placeholder?page=2'
        last_document.search('a#next_page_link').should be_empty
        last_document.search('span#no_next_page').should be_present
        last_document.search('span#no_next_page').text.should match(/No Next Page/)
      end
    end
  end
end