Standardise on double quoted strings

test/helpers/application_helper_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class ApplicationHelperTest < ActionView::TestCase
   fixtures :users, :user_roles

test/helpers/asset_helper_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class AssetHelperTest < ActionView::TestCase
   def test_assets

test/helpers/browse_helper_test.rb

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-require 'test_helper'
+require "test_helper"
 
 class BrowseHelperTest < ActionView::TestCase
   include ERB::Util

test/helpers/changeset_helper_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class ChangesetHelperTest < ActionView::TestCase
   fixtures :changesets, :users

test/helpers/note_helper_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class NoteHelperTest < ActionView::TestCase
   include ERB::Util

test/helpers/title_helper_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class TitleHelperTest < ActionView::TestCase
   def test_set_title