#within_frame method

lib/capybara/driver/base.rb

@@ -27,6 +27,10 @@ class Capybara::Driver::Base
     raise NotImplementedError
   end
 
+  def within_frame frame_id
+      raise Capybara::NotSupportedByDriverError
+  end
+
   def source
     raise NotImplementedError
   end

lib/capybara/driver/selenium_driver.rb

@@ -103,7 +103,12 @@ class Capybara::Driver::Selenium < Capybara::Driver::Base
   def browser
     self.class.driver
   end
-
+  def with_frame(frame_id)
+      old_window = browser.window_handle
+      browser.switch_to.frame(frame_id)
+      yield
+      browser.switch_to.window old_window
+  end
 private
 
   def url(path)

spec/driver/selenium_driver_spec.rb

@@ -8,5 +8,5 @@ describe Capybara::Driver::Selenium do
   it_should_behave_like "driver"
   it_should_behave_like "driver with javascript support"
   it_should_behave_like "driver without node path support"
-  
+  it_should_behave_like "driver with frame support"
 end

spec/drivers_spec.rb

@@ -1,5 +1,8 @@
 require File.expand_path('spec_helper', File.dirname(__FILE__))
 
+shared_examples_for 'driver with frame support' do
+    it_should_behave_like 'within_frame'
+end
 shared_examples_for 'driver' do
 
   describe '#visit' do