Add fixture_file helper.

spec/lib/gitlab/email/attachment_uploader_spec.rb

 require "spec_helper"
 describe Gitlab::Email::AttachmentUploader do
-  def fixture_file(filename)
-    return '' if filename.blank?
-    file_path = File.expand_path(Rails.root + 'spec/fixtures/' + filename)
-    File.read(file_path)
-  end
-
   describe "#execute" do
     let(:project) { build(:project) }
     let(:message_raw) { fixture_file("emails/attachment.eml") }
     let(:message) { Mail::Message.new(message_raw) }
-    it "creates a post with an attachment" do
+    it "uploads all attachments and returns their links" do
       links = described_class.new(message).execute(project)
       link = links.first

spec/lib/gitlab/email/receiver_spec.rb

 require "spec_helper"
 describe Gitlab::Email::Receiver do
-  def fixture_file(filename)
-    return '' if filename.blank?
-    file_path = File.expand_path(Rails.root + 'spec/fixtures/' + filename)
-    File.read(file_path)
-  end
-
   before do
     allow(Gitlab.config.reply_by_email).to receive(:enabled).and_return(true)
     allow(Gitlab.config.reply_by_email).to receive(:address).and_return("reply+%{reply_key}@appmail.adventuretime.ooo")

spec/lib/gitlab/email/reply_parser_spec.rb

@@ -2,12 +2,6 @@ require "spec_helper"
 # Inspired in great part by Discourse's Email::Receiver
 describe Gitlab::Email::ReplyParser do
-  def fixture_file(filename)
-    return '' if filename.blank?
-    file_path = File.expand_path(Rails.root + 'spec/fixtures/' + filename)
-    File.read(file_path)
-  end
-
   describe '#execute' do
     def test_parse_body(mail_string)
       described_class.new(Mail::Message.new(mail_string)).execute

spec/lib/gitlab/google_code_import/client_spec.rb

 require "spec_helper"
 describe Gitlab::GoogleCodeImport::Client do
-  let(:raw_data) { JSON.parse(File.read(Rails.root.join("spec/fixtures/GoogleCodeProjectHosting.json"))) }
+  let(:raw_data) { JSON.parse(fixture_file("GoogleCodeProjectHosting.json")) }
   subject { described_class.new(raw_data) }
   describe "#valid?" do

spec/lib/gitlab/google_code_import/importer_spec.rb

@@ -2,7 +2,7 @@ require "spec_helper"
 describe Gitlab::GoogleCodeImport::Importer do
   let(:mapped_user) { create(:user, username: "thilo123") }
-  let(:raw_data) { JSON.parse(File.read(Rails.root.join("spec/fixtures/GoogleCodeProjectHosting.json"))) }
+  let(:raw_data) { JSON.parse(fixture_file("GoogleCodeProjectHosting.json")) }
   let(:client) { Gitlab::GoogleCodeImport::Client.new(raw_data) }
   let(:import_data) do
     {

spec/support/fixture_helpers.rb

+module FixtureHelpers
+  def fixture_file(filename)
+    return '' if filename.blank?
+    file_path = File.expand_path(Rails.root.join('spec/fixtures/', filename))
+    File.read(file_path)
+  end
+end
+
+RSpec.configure do |config|
+  config.include FixtureHelpers
+end

spec/support/markdown_feature.rb

@@ -100,7 +100,7 @@ class MarkdownFeature
   end
   def raw_markdown
-    fixture = Rails.root.join('spec/fixtures/markdown.md.erb')
-    ERB.new(File.read(fixture)).result(binding)
+    markdown = fixture_file('markdown.md.erb')
+    ERB.new(markdown).result(binding)
   end
 end

spec/workers/email_receiver_worker_spec.rb

 require "spec_helper"
 describe EmailReceiverWorker do
-  def fixture_file(filename)
-    return '' if filename.blank?
-    file_path = File.expand_path(Rails.root + 'spec/fixtures/' + filename)
-    File.read(file_path)
-  end
-
   let(:raw_message) { fixture_file('emails/valid_reply.eml') }
   context "when reply by email is enabled" do