6 files changed, 17 insertions, 6 deletions
diff --git a/actionmailer/test/abstract_unit.rb b/actionmailer/test/abstract_unit.rb
index fcbaa9e186..e84b3b0d23 100644
--- a/actionmailer/test/abstract_unit.rb
+++ b/actionmailer/test/abstract_unit.rb
@@ -4,9 +4,11 @@ begin
 rescue LoadError
   $:.unshift("#{root}/activesupport/lib")
   $:.unshift("#{root}/actionpack/lib")
-  $:.unshift("#{root}/actionmailer/lib")
 end
 
+lib = File.expand_path("#{File.dirname(__FILE__)}/../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
+
 require 'rubygems'
 require 'test/unit'
 
diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index 32c5743382..775cfc82bf 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -6,7 +6,9 @@ rescue LoadError
   $:.unshift "#{root}/activemodel/lib"
 end
 
-$:.unshift(File.dirname(__FILE__) + '/../lib')
+lib = File.expand_path("#{File.dirname(__FILE__)}/../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
+
 $:.unshift(File.dirname(__FILE__) + '/lib')
 $:.unshift(File.dirname(__FILE__) + '/fixtures/helpers')
 $:.unshift(File.dirname(__FILE__) + '/fixtures/alternate_helpers')
diff --git a/activemodel/test/cases/helper.rb b/activemodel/test/cases/helper.rb
index 49783c2735..c1a3f6a4a7 100644
--- a/activemodel/test/cases/helper.rb
+++ b/activemodel/test/cases/helper.rb
@@ -3,9 +3,11 @@ begin
   require "#{root}/vendor/gems/environment"
 rescue LoadError
   $:.unshift("#{root}/activesupport/lib")
-  $:.unshift("#{root}/activemodel/lib")
 end
 
+lib = File.expand_path("#{File.dirname(__FILE__)}/../../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
+
 require 'config'
 require 'active_model'
 
diff --git a/activerecord/test/cases/helper.rb b/activerecord/test/cases/helper.rb
index 871cfa6468..25613da912 100644
--- a/activerecord/test/cases/helper.rb
+++ b/activerecord/test/cases/helper.rb
@@ -3,9 +3,11 @@ begin
   require "#{root}/vendor/gems/environment"
 rescue LoadError
   $:.unshift("#{root}/activesupport/lib")
-  $:.unshift("#{root}/activerecord/lib")
 end
 
+lib = File.expand_path("#{File.dirname(__FILE__)}/../../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
+
 require 'config'
 
 require 'rubygems'
diff --git a/activeresource/test/abstract_unit.rb b/activeresource/test/abstract_unit.rb
index ee12f785b5..10849be20c 100644
--- a/activeresource/test/abstract_unit.rb
+++ b/activeresource/test/abstract_unit.rb
@@ -3,9 +3,11 @@ begin
   require "#{root}/vendor/gems/environment"
 rescue LoadError
   $:.unshift("#{root}/activesupport/lib")
-  $:.unshift("#{root}/activeresource/lib")
 end
 
+lib = File.expand_path("#{File.dirname(__FILE__)}/../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
+
 require 'rubygems'
 require 'test/unit'
 require 'active_support'
diff --git a/activesupport/test/abstract_unit.rb b/activesupport/test/abstract_unit.rb
index d640c9bc63..dda139372e 100644
--- a/activesupport/test/abstract_unit.rb
+++ b/activesupport/test/abstract_unit.rb
@@ -5,7 +5,8 @@ begin
 rescue LoadError
 end
 
-$:.unshift(File.dirname(__FILE__) + '/../lib')
+lib = File.expand_path("#{File.dirname(__FILE__)}/../lib")
+$:.unshift(lib) unless $:.include?('lib') || $:.include?(lib)
 
 require 'test/unit'
 require 'mocha'