Fix for Ruby 1.9.2.

It appears that it is no longer possible to subvert the protection
of a method by calling it via send in Ruby 1.9.2.

test/acceptance/stub_any_instance_method_test.rb

@@ -47,13 +47,16 @@ def my_instance_method
         :original_return_value
       end
       protected :my_instance_method
+      def my_unprotected_instance_method
+        my_instance_method
+      end
     end
     instance = klass.new
     run_as_test do
       klass.any_instance.stubs(:my_instance_method).returns(:new_return_value)
     end
     assert instance.protected_methods(false).any? { |m| m.to_s == 'my_instance_method' }
-    assert_equal :original_return_value, instance.send(:my_instance_method)
+    assert_equal :original_return_value, instance.my_unprotected_instance_method
   end
 
   def test_should_leave_stubbed_private_method_unchanged_after_test

test/acceptance/stub_class_method_test.rb

@@ -50,13 +50,16 @@ def my_class_method
           :original_return_value
         end
         protected :my_class_method
+        def my_unprotected_class_method
+          my_class_method
+        end
       end
     end
     run_as_test do
       klass.stubs(:my_class_method).returns(:new_return_value)
     end
     assert klass.protected_methods(false).any? { |m| m.to_s == 'my_class_method' }
-    assert_equal :original_return_value, klass.send(:my_class_method)
+    assert_equal :original_return_value, klass.my_unprotected_class_method
   end
 
   def test_should_leave_stubbed_private_method_unchanged_after_test

test/acceptance/stub_instance_method_test.rb

@@ -32,12 +32,15 @@ def my_instance_method
         :original_return_value
       end
       protected :my_instance_method
+      def my_unprotected_instance_method
+        my_instance_method
+      end
     end.new
     run_as_test do
       instance.stubs(:my_instance_method).returns(:new_return_value)
     end
     assert instance.protected_methods(false).any? { |m| m.to_s == 'my_instance_method' }
-    assert_equal :original_return_value, instance.send(:my_instance_method)
+    assert_equal :original_return_value, instance.my_unprotected_instance_method
   end
 
   def test_should_leave_stubbed_private_method_unchanged_after_test

test/acceptance/stub_module_method_test.rb

@@ -32,12 +32,12 @@ def test_should_leave_stubbed_public_method_unchanged_after_test
   end
 
   def test_should_leave_stubbed_protected_method_unchanged_after_test
-    mod = Module.new { class << self; def my_module_method; :original_return_value; end; protected :my_module_method; end }
+    mod = Module.new { class << self; def my_module_method; :original_return_value; end; protected :my_module_method; def my_unprotected_module_method; my_module_method; end; end }
     run_as_test do
       mod.stubs(:my_module_method).returns(:new_return_value)
     end
     assert mod.protected_methods(false).any? { |m| m.to_s == 'my_module_method' }
-    assert_equal :original_return_value, mod.send(:my_module_method)
+    assert_equal :original_return_value, mod.my_unprotected_module_method
   end
 
   def test_should_leave_stubbed_private_method_unchanged_after_test