Add switch_to.parent_frame support to Ruby bindings

Signed-off-by: Jari Bakken <jari.bakken@gmail.com>

rb/lib/selenium/webdriver/common/target_locator.rb

@@ -18,6 +18,14 @@ def frame(id)
         @bridge.switchToFrame id
       end
 
+      #
+      # switch to the parent frame
+      #
+
+      def parent_frame
+        @bridge.switchToParentFrame
+      end
+
       #
       # switch to the given window handle
       #

rb/lib/selenium/webdriver/remote/bridge.rb

@@ -190,6 +190,10 @@ def switchToFrame(id)
           execute :switchToFrame, {}, :id => id
         end
 
+        def switchToParentFrame
+          execute :switchToParentFrame
+        end
+
         def switchToDefaultContent
           execute :switchToFrame, {}, :id => nil
         end

rb/lib/selenium/webdriver/remote/commands.rb

@@ -65,6 +65,7 @@ class Selenium::WebDriver::Remote::Bridge
   #
 
   command :switchToFrame,                          :post,    "session/:session_id/frame"
+  command :switchToParentFrame,                    :post,    "session/:session_id/frame/parent"
   command :switchToWindow,                         :post,    "session/:session_id/window"
 
   #

rb/spec/integration/selenium/webdriver/target_locator_spec.rb

@@ -26,6 +26,18 @@
     end
   end
 
+  it "should switch to parent frame" do
+    driver.navigate.to url_for("iframes.html")
+
+    iframe = driver.find_element(:tag_name => "iframe")
+    driver.switch_to.frame(iframe)
+
+    driver.find_element(:name, 'login').should be_kind_of(WebDriver::Element)
+
+    driver.switch_to.parent_frame
+    driver.find_element(:id, 'iframe_page_heading').should be_kind_of(WebDriver::Element)
+  end
+
   # switching by name not yet supported by safari
   not_compliant_on :browser => [:ie, :iphone, :safari] do
     it "should switch to a window and back when given a block" do