Link rel nomethoderror fix

lib/theme_bandit/parser/css.rb

@@ -10,7 +10,7 @@ def get_css_files
 
     def link_tags
       document.css('link').select do |tag|
-        tag.attribute('rel').value == 'stylesheet'
+        tag.attribute('rel') && tag.attribute('rel').value == 'stylesheet'
       end
     end
 

test/fixtures/index.html

@@ -7,6 +7,7 @@
 <link rel='stylesheet' href='/css/style.css'></link>
 <link rel='stylesheet' href='/css/style_with_import.css'></link>
 <link rel='foo' href='bar'></link>
+<link itemprop="url" href="http://www.domain.com" style="display: none;"/>
 <script type='text/javascripts' src='/js/script.js'></script>
 <script type='text/javascripts' src='/js/script_2.js'></script>
 </head>

test/support/common.rb

@@ -1,5 +1,7 @@
 def load_html_fixture
-  @fixture ||= File.read(File.open("#{Dir.pwd}/test/fixtures/index.html", 'r'))
+  # @fixture ||= File.read(File.open("#{Dir.pwd}/test/fixtures/index.html", 'r'))
+
+  @fixture ||= File.read(File.expand_path("../../fixtures/index.html", __FILE__))
 end
 
 def load_css_fixture

test/test_css_parser.rb

@@ -0,0 +1,24 @@
+require_relative 'helper'
+
+  describe ThemeBandit::CSSParser do
+
+    before do
+      #parse index.html fixture with Nokogiri
+      document = Nokogiri::HTML(load_html_fixture)
+
+      #Create a struct and include the CSSParser module
+      CSSParser = Struct.new(:document) do
+        include ThemeBandit::CSSParser
+      end
+
+      #create new instance of CSSParser and set the document instance variable to the parsed fixture
+      @css_parser = CSSParser.new(document)
+    end
+
+    it 'parses only <link> tags with rel="stylesheet"' do
+      assert_equal(@css_parser.link_tags.map{|tag| tag.to_s}, [
+          "<link rel=\"stylesheet\" href=\"/css/style.css\">",
+          "<link rel=\"stylesheet\" href=\"/css/style_with_import.css\">"
+      ])
+    end
+  end

test/test_document_writer.rb

@@ -1,4 +1,4 @@
-require 'helper'
+require_relative 'helper'
 
 describe ThemeBandit::DocumentWriter do
 

test/test_rack_generator.rb

@@ -1,4 +1,4 @@
-require 'helper'
+require_relative 'helper'
 
 describe ThemeBandit::RackGenerator do