Fix a few edited references from WikiLinkFilter and specs

lib/banzai/filter/wiki_link_filter.rb

@@ -25,10 +25,10 @@ module Banzai
       end
 
       def process_link_attr(html_attr)
-        return if html_attr.blank?
+        return if html_attr.blank? || file_reference?(html_attr)
 
         uri = URI(html_attr.value)
-        if uri.relative? && uri.path.present? && uri.path
+        if uri.relative? && uri.path.present?
           html_attr.value = rebuild_wiki_uri(uri).to_s
         end
       rescue URI::Error
@@ -40,6 +40,10 @@ module Banzai
         uri
       end
 
+      def file_reference?(html_attr)
+        !File.extname(html_attr.value).blank?
+      end
+
       def project_wiki
         context[:project_wiki]
       end

spec/features/markdown_spec.rb

@@ -230,6 +230,7 @@ describe 'GitLab Markdown', feature: true do
       file = Gollum::File.new(@project_wiki.wiki)
       expect(file).to receive(:path).and_return('images/example.jpg')
       expect(@project_wiki).to receive(:find_file).with('images/example.jpg').and_return(file)
+      allow(@project_wiki).to receive(:wiki_base_path) { '/namespace1/gitlabhq/wikis' }
 
       @html = markdown(@feat.raw_markdown, { pipeline: :wiki, project_wiki: @project_wiki })
     end

spec/support/matchers/markdown_matchers.rb

@@ -72,14 +72,15 @@ module MarkdownMatchers
       have_css("img[src$='#{src}']")
     end
 
+    prefix = '/namespace1/gitlabhq/wikis'
     set_default_markdown_messages
 
     match do |actual|
-      expect(actual).to have_link('linked-resource', href: 'linked-resource')
-      expect(actual).to have_link('link-text', href: 'linked-resource')
+      expect(actual).to have_link('linked-resource', href: "#{prefix}/linked-resource")
+      expect(actual).to have_link('link-text', href: "#{prefix}/linked-resource")
       expect(actual).to have_link('http://example.com', href: 'http://example.com')
       expect(actual).to have_link('link-text', href: 'http://example.com/pdfs/gollum.pdf')
-      expect(actual).to have_image('/gitlabhq/wikis/images/example.jpg')
+      expect(actual).to have_image("#{prefix}/images/example.jpg")
       expect(actual).to have_image('http://example.com/images/example.jpg')
     end
   end