Added follow_redirect method for functional tests that'll get-request the redirect that was made.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@585 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

 *SVN*
 
+* Added follow_redirect method for functional tests that'll get-request the redirect that was made. Example:
+
+    def test_create_post
+      post :create, "post" => { "title" => "Exciting!" }
+      assert_redirected_to :action => "show"
+      
+      follow_redirect
+      assert_rendered_file "post/show"
+    end
+  
+  Limitation: Only works for redirects to other actions within the same controller.
+
 * Fixed double requiring of models with the same name as the controller
 
 * Fixed that query params could be forced to nil on a POST due to the raw post fix #562 [moriq@moriq.com]

actionpack/lib/action_controller/test_process.rb

@@ -251,6 +251,14 @@ def #{method}(action, parameters = nil, session = nil)
             end
           EOV
         end
+
+        def follow_redirect
+          if @response.redirected_to[:controller]
+            raise "Can't follow redirects outside of current controller (#{@response.redirected_to[:controller]})"
+          end
+          
+          get(@response.redirected_to.delete(:action), @response.redirected_to)
+        end
     end
   end
-end
+end
\ No newline at end of file

actionpack/test/controller/action_pack_assertions_test.rb

@@ -15,6 +15,10 @@ def hello_xml_world() render "test/hello_xml_world"; end
   # a redirect to an internal location
   def redirect_internal() redirect_to "nothing"; end
 
+  def redirect_to_action() redirect_to :action => "flash_me"; end
+
+  def redirect_to_controller() redirect_to :controller => "elsewhere", :action => "flash_me"; end
+
   # a redirect to an external location
   def redirect_external() redirect_to_url "http://www.rubyonrails.org"; end
   
@@ -342,6 +346,21 @@ def test_array_of_elements_in_xpath_match
     process :hello_xml_world
     assert_template_xpath_match('//p', %w( abes monks wiseguys ))
   end
+
+  def test_follow_redirect
+    process :redirect_to_action
+    assert_redirected_to :action => "flash_me"
+    
+    follow_redirect
+    assert "Inconceivable!", @response.body
+  end
+  
+  def test_follow_redirect_outside_current_action
+    process :redirect_to_controller
+    assert_redirected_to :controller => "elsewhere", :action => "flash_me"
+
+    assert_raises(RuntimeError, "Can't follow redirects outside of current controller (elsewhere)") { follow_redirect }
+  end
 end
 
 class ActionPackHeaderTest < Test::Unit::TestCase