require 'abstract_unit'

# You need to start a memcached server inorder to run these tests
class MemCacheStoreTest < ActionController::IntegrationTest
  class TestController < ActionController::Base
    def no_session_access
      head :ok
    end

    def set_session_value
      session[:foo] = "bar"
      head :ok
    end

    def get_session_value
      render :text => "foo: #{session[:foo].inspect}"
    end

    def get_session_id
      session[:foo]
      render :text => "#{request.session_options[:id]}"
    end

    def call_reset_session
      session[:bar]
      reset_session
      session[:bar] = "baz"
      head :ok
    end

    def rescue_action(e) raise end
  end

  begin
    require 'memcache'
    memcache = MemCache.new('localhost:11211')
    memcache.set('ping', '')

    def test_setting_and_getting_session_value
      with_test_route_set do
        get '/set_session_value'
        assert_response :success
        assert cookies['_session_id']

        get '/get_session_value'
        assert_response :success
        assert_equal 'foo: "bar"', response.body
      end
    end

    def test_getting_nil_session_value
      with_test_route_set do
        get '/get_session_value'
        assert_response :success
        assert_equal 'foo: nil', response.body
      end
    end

    def test_setting_session_value_after_session_reset
      with_test_route_set do
        get '/set_session_value'
        assert_response :success
        assert cookies['_session_id']
        session_id = cookies['_session_id']

        get '/call_reset_session'
        assert_response :success
        assert_not_equal [], headers['Set-Cookie']

        get '/get_session_value'
        assert_response :success
        assert_equal 'foo: nil', response.body

        get '/get_session_id'
        assert_response :success
        assert_not_equal session_id, response.body
      end
    end

    def test_getting_session_id
      with_test_route_set do
        get '/set_session_value'
        assert_response :success
        assert cookies['_session_id']
        session_id = cookies['_session_id']

        get '/get_session_id'
        assert_response :success
        assert_equal session_id, response.body
      end
    end

    def test_prevents_session_fixation
      with_test_route_set do
        get '/get_session_value'
        assert_response :success
        assert_equal 'foo: nil', response.body
        session_id = cookies['_session_id']

        reset!

        get '/set_session_value', :_session_id => session_id
        assert_response :success
        assert_not_equal session_id, cookies['_session_id']
      end
    end
  rescue LoadError, RuntimeError
    $stderr.puts "Skipping MemCacheStoreTest tests. Start memcached and try again."
  end

  private
    def with_test_route_set
      with_routing do |set|
        set.draw do |map|
          match ':action', :to => ::MemCacheStoreTest::TestController
        end

        @app = self.class.build_app(set) do |middleware|
          middleware.use ActionDispatch::Session::MemCacheStore, :key => '_session_id'
          middleware.delete "ActionDispatch::ShowExceptions"
        end

        yield
      end
    end
end