Uploads to wiki stored inside the wiki git repository

10 files changed, 635 insertions, 36 deletions

diff --git a/spec/features/projects/wiki/user_creates_wiki_page_spec.rb b/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
index 149eeb4f9ba..b30286e4446 100644
--- a/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
+++ b/spec/features/projects/wiki/user_creates_wiki_page_spec.rb
@@ -146,6 +146,8 @@ describe "User creates wiki page" do
           expect(page).to have_selector(".katex", count: 3).and have_content("2+2 is 4")
         end
       end
+
+      it_behaves_like 'wiki file attachments'
     end
 
     context "in a group namespace", :js do
diff --git a/spec/features/projects/wiki/user_updates_wiki_page_spec.rb b/spec/features/projects/wiki/user_updates_wiki_page_spec.rb
index 2840d28cf30..2ce5ee0e87d 100644
--- a/spec/features/projects/wiki/user_updates_wiki_page_spec.rb
+++ b/spec/features/projects/wiki/user_updates_wiki_page_spec.rb
@@ -3,6 +3,7 @@ require 'spec_helper'
 describe 'User updates wiki page' do
   shared_examples 'wiki page user update' do
     let(:user) { create(:user) }
+
     before do
       project.add_maintainer(user)
       sign_in(user)
@@ -55,6 +56,8 @@ describe 'User updates wiki page' do
 
           expect(page).to have_content('Updated Wiki Content')
         end
+
+        it_behaves_like 'wiki file attachments'
       end
     end
 
@@ -64,14 +67,14 @@ describe 'User updates wiki page' do
 
       before do
         visit(project_wikis_path(project))
+
+        click_link('Edit')
       end
 
       context 'in a user namespace' do
         let(:project) { create(:project, :wiki_repo, namespace: user.namespace) }
 
         it 'updates a page' do
-          click_link('Edit')
-
           # Commit message field should have correct value.
           expect(page).to have_field('wiki[message]', with: 'Update home')
 
@@ -84,8 +87,6 @@ describe 'User updates wiki page' do
         end
 
         it 'shows a validation error message' do
-          click_link('Edit')
-
           fill_in(:wiki_content, with: '')
           click_button('Save changes')
 
@@ -97,8 +98,6 @@ describe 'User updates wiki page' do
         end
 
         it 'shows the emoji autocompletion dropdown', :js do
-          click_link('Edit')
-
           find('#wiki_content').native.send_keys('')
           fill_in(:wiki_content, with: ':')
 
@@ -106,8 +105,6 @@ describe 'User updates wiki page' do
         end
 
         it 'shows the error message' do
-          click_link('Edit')
-
           wiki_page.update(content: 'Update')
 
           click_button('Save changes')
@@ -116,30 +113,27 @@ describe 'User updates wiki page' do
         end
 
         it 'updates a page' do
-          click_on('Edit')
           fill_in('Content', with: 'Updated Wiki Content')
           click_on('Save changes')
 
           expect(page).to have_content('Updated Wiki Content')
         end
 
-        it 'cancels edititng of a page' do
-          click_on('Edit')
-
+        it 'cancels editing of a page' do
           page.within(:css, '.wiki-form .form-actions') do
             click_on('Cancel')
           end
 
           expect(current_path).to eq(project_wiki_path(project, wiki_page))
         end
+
+        it_behaves_like 'wiki file attachments'
       end
 
       context 'in a group namespace' do
         let(:project) { create(:project, :wiki_repo, namespace: create(:group, :public)) }
 
         it 'updates a page' do
-          click_link('Edit')
-
           # Commit message field should have correct value.
           expect(page).to have_field('wiki[message]', with: 'Update home')
 
@@ -151,6 +145,8 @@ describe 'User updates wiki page' do
           expect(page).to have_content("Last edited by #{user.name}")
           expect(page).to have_content('My awesome wiki!')
         end
+
+        it_behaves_like 'wiki file attachments'
       end
     end
 
@@ -222,6 +218,8 @@ describe 'User updates wiki page' do
 
         expect(current_path).to eq(project_wiki_path(project, "foo1/bar1/#{page_name}"))
       end
+
+      it_behaves_like 'wiki file attachments'
     end
   end
 
diff --git a/spec/features/projects/wiki/user_views_wiki_page_spec.rb b/spec/features/projects/wiki/user_views_wiki_page_spec.rb
index 760324adacc..747406efc8b 100644
--- a/spec/features/projects/wiki/user_views_wiki_page_spec.rb
+++ b/spec/features/projects/wiki/user_views_wiki_page_spec.rb
@@ -93,7 +93,7 @@ describe 'User views a wiki page' do
         allow(wiki_file).to receive(:mime_type).and_return('image/jpeg')
         allow_any_instance_of(ProjectWiki).to receive(:find_file).with('image.jpg', nil).and_return(wiki_file)
 
-        expect(page).to have_xpath('//img[@data-src="image.jpg"]')
+        expect(page).to have_xpath("//img[@data-src='#{project.wiki.wiki_base_path}/image.jpg']")
         expect(page).to have_link('image', href: "#{project.wiki.wiki_base_path}/image.jpg")
 
         click_on('image')
diff --git a/spec/lib/banzai/filter/wiki_link_filter_spec.rb b/spec/lib/banzai/filter/wiki_link_filter_spec.rb
index 50d053011b3..b9059b85fdc 100644
--- a/spec/lib/banzai/filter/wiki_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/wiki_link_filter_spec.rb
@@ -7,6 +7,7 @@ describe Banzai::Filter::WikiLinkFilter do
   let(:project)   { build_stubbed(:project, :public, name: "wiki_link_project", namespace: namespace) }
   let(:user) { double }
   let(:wiki) { ProjectWiki.new(project, user) }
+  let(:repository_upload_folder) { Wikis::CreateAttachmentService::ATTACHMENT_PATH }
 
   it "doesn't rewrite absolute links" do
     filtered_link = filter("<a href='http://example.com:8000/'>Link</a>", project_wiki: wiki).children[0]
@@ -20,6 +21,45 @@ describe Banzai::Filter::WikiLinkFilter do
     expect(filtered_link.attribute('href').value).to eq('/uploads/a.test')
   end
 
+  describe "when links point to the #{Wikis::CreateAttachmentService::ATTACHMENT_PATH} folder" do
+    context 'with an "a" html tag' do
+      it 'rewrites links' do
+        filtered_link = filter("<a href='#{repository_upload_folder}/a.test'>Link</a>", project_wiki: wiki).children[0]
+
+        expect(filtered_link.attribute('href').value).to eq("#{wiki.wiki_base_path}/#{repository_upload_folder}/a.test")
+      end
+    end
+
+    context 'with "img" html tag' do
+      let(:path) { "#{wiki.wiki_base_path}/#{repository_upload_folder}/a.jpg" }
+
+      context 'inside an "a" html tag' do
+        it 'rewrites links' do
+          filtered_elements = filter("<a href='#{repository_upload_folder}/a.jpg'><img src='#{repository_upload_folder}/a.jpg'>example</img></a>", project_wiki: wiki)
+
+          expect(filtered_elements.search('img').first.attribute('src').value).to eq(path)
+          expect(filtered_elements.search('a').first.attribute('href').value).to eq(path)
+        end
+      end
+
+      context 'outside an "a" html tag' do
+        it 'rewrites links' do
+          filtered_link = filter("<img src='#{repository_upload_folder}/a.jpg'>example</img>", project_wiki: wiki).children[0]
+
+          expect(filtered_link.attribute('src').value).to eq(path)
+        end
+      end
+    end
+
+    context 'with "video" html tag' do
+      it 'rewrites links' do
+        filtered_link = filter("<video src='#{repository_upload_folder}/a.mp4'></video>", project_wiki: wiki).children[0]
+
+        expect(filtered_link.attribute('src').value).to eq("#{wiki.wiki_base_path}/#{repository_upload_folder}/a.mp4")
+      end
+    end
+  end
+
   describe "invalid links" do
     invalid_links = ["http://:8080", "http://", "http://:8080/path"]
 
diff --git a/spec/lib/gitlab/file_markdown_link_builder_spec.rb b/spec/lib/gitlab/file_markdown_link_builder_spec.rb
new file mode 100644
index 00000000000..feb2776c5d0
--- /dev/null
+++ b/spec/lib/gitlab/file_markdown_link_builder_spec.rb
@@ -0,0 +1,80 @@
+# frozen_string_literal: true
+require 'rails_helper'
+
+describe Gitlab::FileMarkdownLinkBuilder do
+  let(:custom_class) do
+    Class.new do
+      include Gitlab::FileMarkdownLinkBuilder
+    end.new
+  end
+
+  before do
+    allow(custom_class).to receive(:filename).and_return(filename)
+  end
+
+  describe 'markdown_link' do
+    let(:url) { "/uploads/#{filename}"}
+
+    before do
+      allow(custom_class).to receive(:secure_url).and_return(url)
+    end
+
+    context 'when file name has the character ]' do
+      let(:filename) { 'd]k.png' }
+
+      it 'escapes the character' do
+        expect(custom_class.markdown_link).to eq '![d\\]k](/uploads/d]k.png)'
+      end
+    end
+
+    context 'when file is an image or video' do
+      let(:filename) { 'dk.png' }
+
+      it 'returns preview markdown link' do
+        expect(custom_class.markdown_link).to eq '![dk](/uploads/dk.png)'
+      end
+    end
+
+    context 'when file is not an image or video' do
+      let(:filename) { 'dk.zip' }
+
+      it 'returns markdown link' do
+        expect(custom_class.markdown_link).to eq '[dk.zip](/uploads/dk.zip)'
+      end
+    end
+
+    context 'when file name is blank' do
+      let(:filename) { nil }
+
+      it 'returns nil' do
+        expect(custom_class.markdown_link).to eq nil
+      end
+    end
+  end
+
+  describe 'mardown_name' do
+    context 'when file is an image or video' do
+      let(:filename) { 'dk.png' }
+
+      it 'retrieves the name without the extension' do
+        expect(custom_class.markdown_name).to eq 'dk'
+      end
+    end
+
+    context 'when file is not an image or video' do
+      let(:filename) { 'dk.zip' }
+
+      it 'retrieves the name with the extesion' do
+        expect(custom_class.markdown_name).to eq 'dk.zip'
+      end
+    end
+
+    context 'when file name is blank' do
+      let(:filename) { nil }
+
+      it 'returns nil' do
+        expect(custom_class.markdown_name).to eq nil
+      end
+    end
+  end
+end
diff --git a/spec/lib/gitlab/file_type_detection_spec.rb b/spec/lib/gitlab/file_type_detection_spec.rb
new file mode 100644
index 00000000000..5e9b8988cc8
--- /dev/null
+++ b/spec/lib/gitlab/file_type_detection_spec.rb
@@ -0,0 +1,82 @@
+# frozen_string_literal: true
+require 'rails_helper'
+
+describe Gitlab::FileTypeDetection do
+  def upload_fixture(filename)
+    fixture_file_upload(File.join('spec', 'fixtures', filename))
+  end
+
+  describe '#image_or_video?' do
+    context 'when class is an uploader' do
+      let(:uploader) do
+        example_uploader = Class.new(CarrierWave::Uploader::Base) do
+          include Gitlab::FileTypeDetection
+
+          storage :file
+        end
+
+        example_uploader.new
+      end
+
+      it 'returns true for an image file' do
+        uploader.store!(upload_fixture('dk.png'))
+
+        expect(uploader).to be_image_or_video
+      end
+
+      it 'returns true for a video file' do
+        uploader.store!(upload_fixture('video_sample.mp4'))
+
+        expect(uploader).to be_image_or_video
+      end
+
+      it 'returns false for other extensions' do
+        uploader.store!(upload_fixture('doc_sample.txt'))
+
+        expect(uploader).not_to be_image_or_video
+      end
+
+      it 'returns false if filename is blank' do
+        uploader.store!(upload_fixture('dk.png'))
+
+        allow(uploader).to receive(:filename).and_return(nil)
+
+        expect(uploader).not_to be_image_or_video
+      end
+    end
+
+    context 'when class is a regular class' do
+      let(:custom_class) do
+        custom_class = Class.new do
+          include Gitlab::FileTypeDetection
+        end
+
+        custom_class.new
+      end
+
+      it 'returns true for an image file' do
+        allow(custom_class).to receive(:filename).and_return('dk.png')
+
+        expect(custom_class).to be_image_or_video
+      end
+
+      it 'returns true for a video file' do
+        allow(custom_class).to receive(:filename).and_return('video_sample.mp4')
+
+        expect(custom_class).to be_image_or_video
+      end
+
+      it 'returns false for other extensions' do
+        allow(custom_class).to receive(:filename).and_return('doc_sample.txt')
+
+        expect(custom_class).not_to be_image_or_video
+      end
+
+      it 'returns false if filename is blank' do
+        allow(custom_class).to receive(:filename).and_return(nil)
+
+        expect(custom_class).not_to be_image_or_video
+      end
+    end
+  end
+end
diff --git a/spec/requests/api/wikis_spec.rb b/spec/requests/api/wikis_spec.rb
index 489cb001b82..c40d01e1a14 100644
--- a/spec/requests/api/wikis_spec.rb
+++ b/spec/requests/api/wikis_spec.rb
@@ -139,6 +139,27 @@ describe API::Wikis do
     end
   end
 
+  shared_examples_for 'uploads wiki attachment' do
+    it 'pushes attachment to the wiki repository' do
+      allow(SecureRandom).to receive(:hex).and_return('fixed_hex')
+
+      post(api(url, user), payload)
+
+      expect(response).to have_gitlab_http_status(201)
+      expect(json_response).to eq result_hash.deep_stringify_keys
+    end
+
+    it 'responds with validation error on empty file' do
+      payload.delete(:file)
+
+      post(api(url, user), payload)
+
+      expect(response).to have_gitlab_http_status(400)
+      expect(json_response.size).to eq(1)
+      expect(json_response['error']).to eq('file is missing')
+    end
+  end
+
   describe 'GET /projects/:id/wikis' do
     let(:url) { "/projects/#{project.id}/wikis" }
 
@@ -698,4 +719,107 @@ describe API::Wikis do
       include_examples '204 No Content'
     end
   end
+
+  describe 'POST /projects/:id/wikis/attachments' do
+    let(:payload) { { file: fixture_file_upload('spec/fixtures/dk.png') } }
+    let(:url) { "/projects/#{project.id}/wikis/attachments" }
+    let(:file_path) { "#{Wikis::CreateAttachmentService::ATTACHMENT_PATH}/fixed_hex/dk.png" }
+    let(:result_hash) do
+      {
+        file_name: 'dk.png',
+        file_path: file_path,
+        branch: 'master',
+        link: {
+          url: file_path,
+          markdown: "![dk](#{file_path})"
+        }
+      }
+    end
+
+    context 'when wiki is disabled' do
+      let(:project) { create(:project, :wiki_disabled, :wiki_repo) }
+
+      context 'when user is guest' do
+        before do
+          post(api(url), payload)
+        end
+
+        include_examples '404 Project Not Found'
+      end
+
+      context 'when user is developer' do
+        before do
+          project.add_developer(user)
+          post(api(url, user), payload)
+        end
+
+        include_examples '403 Forbidden'
+      end
+
+      context 'when user is maintainer' do
+        before do
+          project.add_maintainer(user)
+          post(api(url, user), payload)
+        end
+
+        include_examples '403 Forbidden'
+      end
+    end
+
+    context 'when wiki is available only for team members' do
+      let(:project) { create(:project, :wiki_private, :wiki_repo) }
+
+      context 'when user is guest' do
+        before do
+          post(api(url), payload)
+        end
+
+        include_examples '404 Project Not Found'
+      end
+
+      context 'when user is developer' do
+        before do
+          project.add_developer(user)
+        end
+
+        include_examples 'uploads wiki attachment'
+      end
+
+      context 'when user is maintainer' do
+        before do
+          project.add_maintainer(user)
+        end
+
+        include_examples 'uploads wiki attachment'
+      end
+    end
+
+    context 'when wiki is available for everyone with access' do
+      let(:project) { create(:project, :wiki_repo) }
+
+      context 'when user is guest' do
+        before do
+          post(api(url), payload)
+        end
+
+        include_examples '404 Project Not Found'
+      end
+
+      context 'when user is developer' do
+        before do
+          project.add_developer(user)
+        end
+
+        include_examples 'uploads wiki attachment'
+      end
+
+      context 'when user is maintainer' do
+        before do
+          project.add_maintainer(user)
+        end
+
+        include_examples 'uploads wiki attachment'
+      end
+    end
+  end
 end
diff --git a/spec/services/wikis/create_attachment_service_spec.rb b/spec/services/wikis/create_attachment_service_spec.rb
new file mode 100644
index 00000000000..3f4da873ce4
--- /dev/null
+++ b/spec/services/wikis/create_attachment_service_spec.rb
@@ -0,0 +1,202 @@
+# frozen_string_literal: true
+require 'spec_helper'
+
+describe Wikis::CreateAttachmentService do
+  let(:project) { create(:project, :wiki_repo) }
+  let(:user) { create(:user) }
+  let(:file_name) { 'filename.txt' }
+  let(:file_path_regex) { %r{#{described_class::ATTACHMENT_PATH}/\h{32}/#{file_name}} }
+
+  let(:file_opts) do
+    {
+      file_name: file_name,
+      file_content: 'Content of attachment'
+    }
+  end
+  let(:opts) { file_opts }
+
+  subject(:service) { described_class.new(project, user, opts) }
+
+  before do
+    project.add_developer(user)
+  end
+
+  describe 'initialization' do
+    context 'author commit info' do
+      it 'does not raise error if user is nil' do
+        service = described_class.new(project, nil, opts)
+
+        expect(service.instance_variable_get(:@author_email)).to be_nil
+        expect(service.instance_variable_get(:@author_name)).to be_nil
+      end
+
+      it 'fills file_path from the repository uploads folder' do
+        expect(service.instance_variable_get(:@file_path)).to match(file_path_regex)
+      end
+
+      context 'when no author info provided' do
+        it 'fills author_email and author_name from current_user info' do
+          expect(service.instance_variable_get(:@author_email)).to eq user.email
+          expect(service.instance_variable_get(:@author_name)).to eq user.name
+        end
+      end
+
+      context 'when author info provided' do
+        let(:author_email) { 'author_email' }
+        let(:author_name) { 'author_name' }
+        let(:opts) { file_opts.merge(author_email: author_email, author_name: author_name) }
+
+        it 'fills author_email and author_name from params' do
+          expect(service.instance_variable_get(:@author_email)).to eq author_email
+          expect(service.instance_variable_get(:@author_name)).to eq author_name
+        end
+      end
+    end
+
+    context 'commit message' do
+      context 'when no commit message provided' do
+        it 'sets a default commit message' do
+          expect(service.instance_variable_get(:@commit_message)).to eq "Upload attachment #{opts[:file_name]}"
+        end
+      end
+
+      context 'when commit message provided' do
+        let(:commit_message) { 'whatever' }
+        let(:opts) { file_opts.merge(commit_message: commit_message) }
+
+        it 'use the commit message from params' do
+          expect(service.instance_variable_get(:@commit_message)).to eq commit_message
+        end
+      end
+    end
+
+    context 'branch name' do
+      context 'when no branch provided' do
+        it 'sets the branch from the wiki default_branch' do
+          expect(service.instance_variable_get(:@branch_name)).to eq project.wiki.default_branch
+        end
+      end
+
+      context 'when branch provided' do
+        let(:branch_name) { 'whatever' }
+        let(:opts) { file_opts.merge(branch_name: branch_name) }
+
+        it 'use the commit message from params' do
+          expect(service.instance_variable_get(:@branch_name)).to eq branch_name
+        end
+      end
+    end
+  end
+
+  describe 'validations' do
+    context 'when file_name' do
+      context 'is not present' do
+        let(:file_name) { nil }
+
+        it 'returns error' do
+          result = service.execute
+
+          expect(result[:status]).to eq :error
+          expect(result[:message]).to eq 'The file name cannot be empty'
+        end
+      end
+
+      context 'length' do
+        context 'is bigger than 255' do
+          let(:file_name) { "#{'0' * 256}.jpg" }
+
+          it 'truncates file name' do
+            result = service.execute
+
+            expect(result[:status]).to eq :success
+            expect(result[:result][:file_name].length).to eq 255
+            expect(result[:result][:file_name]).to match(/0{251}\.jpg/)
+          end
+        end
+
+        context 'is less or equal to 255 does not return error' do
+          let(:file_name) { '0' * 255 }
+
+          it 'does not return error' do
+            result = service.execute
+
+            expect(result[:status]).to eq :success
+          end
+        end
+      end
+    end
+
+    context 'when user' do
+      shared_examples 'wiki attachment user validations' do
+        it 'returns error' do
+          result = described_class.new(project, user2, opts).execute
+
+          expect(result[:status]).to eq :error
+          expect(result[:message]).to eq 'You are not allowed to push to the wiki'
+        end
+      end
+
+      context 'does not have permission' do
+        let(:user2) { create(:user) }
+
+        it_behaves_like 'wiki attachment user validations'
+      end
+
+      context 'is nil' do
+        let(:user2) { nil }
+
+        it_behaves_like 'wiki attachment user validations'
+      end
+    end
+  end
+
+  describe '#execute' do
+    let(:wiki) { project.wiki }
+    subject(:service_execute) { service.execute[:result] }
+
+    context 'creates branch if it does not exists' do
+      let(:branch_name) { 'new_branch' }
+      let(:opts) { file_opts.merge(branch_name: branch_name) }
+
+      it do
+        expect(wiki.repository.branches).to be_empty
+        expect { service.execute }.to change { wiki.repository.branches.count }.by(1)
+        expect(wiki.repository.branches.first.name).to eq branch_name
+      end
+    end
+
+    it 'adds file to the repository' do
+      expect(wiki.repository.ls_files('HEAD')).to be_empty
+
+      service.execute
+
+      files = wiki.repository.ls_files('HEAD')
+      expect(files.count).to eq 1
+      expect(files.first).to match(file_path_regex)
+    end
+
+    context 'returns' do
+      before do
+        allow(SecureRandom).to receive(:hex).and_return('fixed_hex')
+
+        service_execute
+      end
+
+      it 'returns the file name' do
+        expect(service_execute[:file_name]).to eq file_name
+      end
+
+      it 'returns the path where file was stored' do
+        expect(service_execute[:file_path]).to eq 'uploads/fixed_hex/filename.txt'
+      end
+
+      it 'returns the branch where the file was pushed' do
+        expect(service_execute[:branch]).to eq wiki.default_branch
+      end
+
+      it 'returns the commit id' do
+        expect(service_execute[:commit]).not_to be_empty
+      end
+    end
+  end
+end
diff --git a/spec/support/shared_examples/wiki_file_attachments_examples.rb b/spec/support/shared_examples/wiki_file_attachments_examples.rb
new file mode 100644
index 00000000000..b6fb2a66b0e
--- /dev/null
+++ b/spec/support/shared_examples/wiki_file_attachments_examples.rb
@@ -0,0 +1,88 @@
+# frozen_string_literal: true
+
+# Requires a context containing:
+#   project
+
+shared_examples 'wiki file attachments' do
+  include DropzoneHelper
+
+  context 'uploading attachments', :js do
+    let(:wiki) { project.wiki }
+
+    def attach_with_dropzone(wait = false)
+      dropzone_file([Rails.root.join('spec', 'fixtures', 'dk.png')], 0, wait)
+    end
+
+    context 'before uploading' do
+      it 'shows "Attach a file" button' do
+        expect(page).to have_button('Attach a file')
+        expect(page).not_to have_selector('.uploading-progress-container', visible: true)
+      end
+    end
+
+    context 'uploading is in progress' do
+      it 'cancels uploading on clicking to "Cancel" button' do
+        slow_requests do
+          attach_with_dropzone
+
+          click_button 'Cancel'
+        end
+
+        expect(page).to have_button('Attach a file')
+        expect(page).not_to have_button('Cancel')
+        expect(page).not_to have_selector('.uploading-progress-container', visible: true)
+      end
+
+      it 'shows "Attaching a file" message on uploading 1 file' do
+        slow_requests do
+          attach_with_dropzone
+
+          expect(page).to have_selector('.attaching-file-message', visible: true, text: 'Attaching a file -')
+        end
+      end
+    end
+
+    context 'uploading is complete' do
+      it 'shows "Attach a file" button on uploading complete' do
+        attach_with_dropzone
+        wait_for_requests
+
+        expect(page).to have_button('Attach a file')
+        expect(page).not_to have_selector('.uploading-progress-container', visible: true)
+      end
+
+      it 'the markdown link is added to the page' do
+        fill_in(:wiki_content, with: '')
+        attach_with_dropzone(true)
+        wait_for_requests
+
+        expect(page.find('#wiki_content').value)
+          .to match(%r{\!\[dk\]\(uploads/\h{32}/dk\.png\)$})
+      end
+
+      it 'the links point to the wiki root url' do
+        attach_with_dropzone(true)
+        wait_for_requests
+
+        find('.js-md-preview-button').click
+        file_path = page.find('input[name="files[]"]', visible: :hidden).value
+        link = page.find('a.no-attachment-icon')['href']
+        img_link = page.find('a.no-attachment-icon img')['src']
+
+        expect(link).to eq img_link
+        expect(URI.parse(link).path).to eq File.join(wiki.wiki_base_path, file_path)
+      end
+
+      it 'the file has been added to the wiki repository' do
+        expect do
+          attach_with_dropzone(true)
+          wait_for_requests
+        end.to change { wiki.repository.ls_files('HEAD').count }.by(1)
+
+        file_path = page.find('input[name="files[]"]', visible: :hidden).value
+
+        expect(wiki.find_file(file_path, 'HEAD').path).not_to be_nil
+      end
+    end
+  end
+end
diff --git a/spec/uploaders/uploader_helper_spec.rb b/spec/uploaders/uploader_helper_spec.rb
index 33da93cc9d0..fd6712d4645 100644
--- a/spec/uploaders/uploader_helper_spec.rb
+++ b/spec/uploaders/uploader_helper_spec.rb
@@ -11,27 +11,10 @@ describe UploaderHelper do
     example_uploader.new
   end
 
-  def upload_fixture(filename)
-    fixture_file_upload(File.join('spec', 'fixtures', filename))
-  end
-
-  describe '#image_or_video?' do
-    it 'returns true for an image file' do
-      uploader.store!(upload_fixture('dk.png'))
-
-      expect(uploader).to be_image_or_video
-    end
-
-    it 'it returns true for a video file' do
-      uploader.store!(upload_fixture('video_sample.mp4'))
-
-      expect(uploader).to be_image_or_video
-    end
-
-    it 'returns false for other extensions' do
-      uploader.store!(upload_fixture('doc_sample.txt'))
-
-      expect(uploader).not_to be_image_or_video
+  describe '#extension_match?' do
+    it 'returns false if file does not exists' do
+      expect(uploader.file).to be_nil
+      expect(uploader.send(:extension_match?, 'jpg')).to eq false
     end
   end
 end