require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
describe HtmlHeadHelper do

  describe "render_js_includes" do
    helper do 
      def javascript_includes
        [ 
          ["some_js.js", {:plugin => :blacklight}],
          ["other_js"]
        ]
      end
    end
    it "should include script tags specified in controller#javascript_includes" do
      html = helper.render_js_includes
      if use_asset_pipeline?
        html.should have_selector("script[src='/assets/some_js.js'][type='text/javascript']")
        html.should have_selector("script[src='/assets/other_js.js'][type='text/javascript']")
      else
        html.should have_selector("script[src='/javascripts/some_js.js'][type='text/javascript']")
        html.should have_selector("script[src='/javascripts/other_js.js'][type='text/javascript']")      
      end

      html.html_safe?.should == true
    end
  end

  describe "render_stylesheet_links" do
    helper do 
      def stylesheet_links
        [ 
          ["my_stylesheet", {:plugin => :blacklight}],
          ["other_stylesheet"]
        ]
      end
    end
    it "should render stylesheets specified in controller #stylesheet_links" do
      html = helper.render_stylesheet_includes      
      if use_asset_pipeline?
        html.should have_selector("link[href='/assets/my_stylesheet.css'][rel='stylesheet'][type='text/css']")
        html.should have_selector("link[href='/assets/other_stylesheet.css'][rel='stylesheet'][type='text/css']")
      else
        html.should have_selector("link[href='/stylesheets/my_stylesheet.css'][rel='stylesheet'][type='text/css']")
        html.should have_selector("link[href='/stylesheets/other_stylesheet.css'][rel='stylesheet'][type='text/css']")
      end
      html.html_safe?.should == true
    end
  end
  
  describe "render_extra_head_content" do
    helper do 
      def extra_head_content
        ['<link rel="a">', '<link rel="b">']
      end
    end

    it "should include content specified in controller#extra_head_content" do
      html = helper.render_extra_head_content

      html.should have_selector("link[rel=a]")
      html.should have_selector("link[rel=b]")

      html.html_safe?.should == true
    end
  end

  describe "render_head_content" do
    describe "with no methods defined" do
      it "should return empty string without complaint" do
      lambda {helper.render_head_content}.should_not raise_error
      helper.render_head_content.should be_blank
      helper.render_head_content.html_safe?.should == true
      end
    end
    describe "with methods defined" do
      it "should include all head content" do
        helper.should_receive(:render_extra_head_content).and_return("".html_safe)
        helper.should_receive(:render_js_includes).and_return("".html_safe)
        helper.should_receive(:render_stylesheet_includes).and_return("".html_safe)
        helper.should_receive(:content_for).with(:head).and_return("".html_safe)
        helper.render_head_content.should be_html_safe
      end
    end
  end

  private
  def use_asset_pipeline?
    (Rails::VERSION::MAJOR >= 3 and Rails::VERSION::MINOR >= 1) and Rails.application.config.assets.enabled
  end

end