1 files changed, 9 insertions, 7 deletions
diff --git a/activesupport/test/abstract_unit.rb b/activesupport/test/abstract_unit.rb
index da157a81c8..2cfa245bc8 100644
--- a/activesupport/test/abstract_unit.rb
+++ b/activesupport/test/abstract_unit.rb
@@ -5,13 +5,15 @@ $:.unshift File.dirname(__FILE__)
 require 'active_support'
 
 # Wrap tests that use Mocha and skip if unavailable.
-def uses_mocha(test_name)
-  require 'rubygems'
-  gem 'mocha', '>= 0.5.5'
-  require 'mocha'
-  yield
-rescue LoadError
-  $stderr.puts "Skipping #{test_name} tests. `gem install mocha` and try again."
+unless defined? uses_mocha
+  def uses_mocha(test_name)
+    require 'rubygems'
+    gem 'mocha', '>= 0.5.5'
+    require 'mocha'
+    yield
+  rescue LoadError
+    $stderr.puts "Skipping #{test_name} tests. `gem install mocha` and try again."
+  end
 end
 
 # Show backtraces for deprecated behavior for quicker cleanup.