Add a failing test case for an implicit action with a before filter.

Signed-off-by: NAndrew White <andyw@pixeltrix.co.uk>

actionpack/test/controller/filters_test.rb

@@ -505,6 +505,16 @@ def show
     end
   end
 
+  class ImplicitActionsController < ActionController::Base
+    before_filter :find_user, :only => :edit
+
+    private
+
+    def find_user
+      @user = 'Jenny'
+    end
+  end
+
   def test_sweeper_should_not_block_rendering
     response = test_process(SweeperTestController)
     assert_equal 'hello world', response.body
@@ -783,6 +793,18 @@ def test_a_rescuing_around_filter
     assert_equal("I rescued this: #<FilterTest::ErrorToRescue: Something made the bad noise.>", response.body)
   end
 
+  def test_filter_runs_for_implicitly_defined_action_when_needed
+    test_process(ImplicitActionsController, 'edit')
+    assert_equal 'Jenny', assigns(:user)
+    assert_equal 'edit', response.body
+  end
+
+  def test_filter_does_not_run_for_implicity_defined_action_when_not_needed
+    test_process(ImplicitActionsController, 'show')
+    assert_nil assigns(:user)
+    assert_equal 'show', response.body
+  end
+
   private
     def test_process(controller, action = "show")
       @controller = controller.is_a?(Class) ? controller.new : controller

actionpack/test/fixtures/filter_test/implicit_actions/edit.html.erb

+edit
\ No newline at end of file

actionpack/test/fixtures/filter_test/implicit_actions/show.html.erb

+show
\ No newline at end of file