Upgrade to Rails 2.2.0

As a side benefit, fix an (non-user-visible) bug in display_s5().
Also fixed a bug where removing orphaned pages did not expire cached summary pages.

vendor/rails/actionpack/test/template/compiled_templates_test.rb

@@ -0,0 +1,47 @@
+require 'abstract_unit'
+require 'controller/fake_models'
+
+uses_mocha 'TestTemplateRecompilation' do
+  class CompiledTemplatesTest < Test::Unit::TestCase
+    def setup
+      @compiled_templates = ActionView::Base::CompiledTemplates
+      @compiled_templates.instance_methods.each do |m|
+        @compiled_templates.send(:remove_method, m) if m =~ /^_run_/
+      end
+    end
+
+    def test_template_gets_compiled
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render("test/hello_world.erb")
+      assert_equal 1, @compiled_templates.instance_methods.size
+    end
+
+    def test_template_gets_recompiled_when_using_different_keys_in_local_assigns
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render("test/hello_world.erb")
+      assert_equal "Hello world!", render("test/hello_world.erb", {:foo => "bar"})
+      assert_equal 2, @compiled_templates.instance_methods.size
+    end
+
+    def test_compiled_template_will_not_be_recompiled_when_rendered_with_identical_local_assigns
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render("test/hello_world.erb")
+      ActionView::Template.any_instance.expects(:compile!).never
+      assert_equal "Hello world!", render("test/hello_world.erb")
+    end
+
+    def test_compiled_template_will_always_be_recompiled_when_eager_loaded_templates_is_off
+      ActionView::PathSet::Path.expects(:eager_load_templates?).times(4).returns(false)
+      assert_equal 0, @compiled_templates.instance_methods.size
+      assert_equal "Hello world!", render("#{FIXTURE_LOAD_PATH}/test/hello_world.erb")
+      ActionView::Template.any_instance.expects(:compile!).times(3)
+      3.times { assert_equal "Hello world!", render("#{FIXTURE_LOAD_PATH}/test/hello_world.erb") }
+      assert_equal 1, @compiled_templates.instance_methods.size
+    end
+
+    private
+      def render(*args)
+        ActionView::Base.new(ActionController::Base.view_paths, {}).render(*args)
+      end
+  end
+end