Rails4: replace deprecated Relation#first with finder options at IssueCategoryTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12525 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/issue_category_test.rb

@@ -26,13 +26,13 @@ class IssueCategoryTest < ActiveSupport::TestCase
 
   def test_create
     assert IssueCategory.new(:project_id => 2, :name => 'New category').save
-    category = IssueCategory.first(:order => 'id DESC')
+    category = IssueCategory.order('id DESC').first
     assert_equal 'New category', category.name
   end
 
   def test_create_with_group_assignment
     assert IssueCategory.new(:project_id => 2, :name => 'Group assignment', :assigned_to_id => 11).save
-    category = IssueCategory.first(:order => 'id DESC')
+    category = IssueCategory.order('id DESC').first
     assert_kind_of Group, category.assigned_to
     assert_equal Group.find(11), category.assigned_to
   end