diff --git a/actionpack/test/abstract_unit.rb b/actionpack/test/abstract_unit.rb
index bc7c80f1ce..2733ed95da 100644
--- a/actionpack/test/abstract_unit.rb
+++ b/actionpack/test/abstract_unit.rb
@@ -18,8 +18,10 @@ ActionController::Routing::Routes.reload rescue nil
 
 # Wrap tests that use Mocha and skip if unavailable.
 def uses_mocha(test_name)
-  require 'mocha'
-  require 'stubba'
+  unless Object.const_defined?(:Mocha)
+    require 'mocha'
+    require 'stubba'
+  end
   yield
 rescue LoadError
   $stderr.puts "Skipping #{test_name} tests. `gem install mocha` and try again."
diff --git a/actionpack/test/template/base_test.rb b/actionpack/test/template/base_test.rb
new file mode 100644
index 0000000000..754c38f393
--- /dev/null
+++ b/actionpack/test/template/base_test.rb
@@ -0,0 +1,38 @@
+require "#{File.dirname(__FILE__)}/../abstract_unit"
+require "#{File.dirname(__FILE__)}/../testing_sandbox"
+
+class ActionViewTemplateTest < Test::Unit::TestCase
+  include TestingSandbox
+  
+  uses_mocha "Action View Templates" do
+    def setup
+      @template = ActionView::Base.new
+    end
+    
+    def test_should_find_delegated_extension
+      @template.expects(:delegate_template_exists?).with('foo').returns(['foo'])
+      assert_equal :foo, @template.send(:find_template_extension_for, 'foo')
+    end
+    
+    def test_should_find_erb_extension
+      @template.expects(:delegate_template_exists?).with('foo').returns(nil)
+      @template.expects(:erb_template_exists?).with('foo').returns(:erb)
+      assert_equal :erb, @template.send(:find_template_extension_for, 'foo')
+    end
+    
+    def test_should_find_builder_extension
+      @template.expects(:delegate_template_exists?).with('foo').returns(nil)
+      @template.expects(:erb_template_exists?).with('foo').returns(nil)
+      @template.expects(:builder_template_exists?).with('foo').returns(:builder)
+      assert_equal :builder, @template.send(:find_template_extension_for, 'foo')
+    end
+    
+    def test_should_find_javascript_extension
+      @template.expects(:delegate_template_exists?).with('foo').returns(nil)
+      @template.expects(:erb_template_exists?).with('foo').returns(nil)
+      @template.expects(:builder_template_exists?).with('foo').returns(nil)
+      @template.expects(:javascript_template_exists?).with('foo').returns(true)
+      assert_equal :rjs, @template.send(:find_template_extension_for, 'foo')
+    end
+  end
+end
\ No newline at end of file