Fixes User/CustomValue association broken by r2869 (#3978).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2905 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/custom_value_test.rb

@@ -18,7 +18,7 @@
 require File.dirname(__FILE__) + '/../test_helper'
 
 class CustomValueTest < ActiveSupport::TestCase
-  fixtures :custom_fields
+  fixtures :custom_fields, :custom_values, :users
 
   def test_string_field_validation_with_blank_value
     f = CustomField.new(:field_format => 'string')
@@ -114,4 +114,10 @@ class CustomValueTest < ActiveSupport::TestCase
     v = CustomValue.new(:custom_field => field, :value => 'Not empty')
     assert_equal 'Not empty', v.value
   end
+  
+  def test_sti_polymorphic_association
+    # Rails uses top level sti class for polymorphic association. See #3978.
+    assert !User.find(4).custom_values.empty?
+    assert !CustomValue.find(2).customized.nil?
+  end
 end