Added exception handling of missing layouts (closes #5373) [chris@ozmm.org]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4550 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added exception handling of missing layouts #5373 [chris@ozmm.org]
+
 * Fixed that real files and symlinks should be treated the same when compiling templates #5438 [zachary@panandscan.com]
 
 * Fixed that the flash should be reset when reset_session is called #5584 [shugo@ruby-lang.org]

actionpack/lib/action_controller/layout.rb

@@ -236,6 +236,8 @@ module ActionController #:nodoc:
       template_with_options = options.is_a?(Hash)
 
       if apply_layout?(template_with_options, options) && (layout = pick_layout(template_with_options, options, deprecated_layout))
+        assert_existence_of_template_file(layout)
+
         options = options.merge :layout => false if template_with_options
         logger.info("Rendering #{options} within #{layout}") if logger
 

actionpack/test/controller/layout_test.rb

@@ -121,4 +121,23 @@ class LayoutSetInResponseTest < Test::Unit::TestCase
     get :hello
     assert_nil @response.layout
   end
-end
+end
+
+
+class SetsNonExistentLayoutFile < LayoutTest
+  layout "nofile.rhtml"
+end
+
+class LayoutExceptionRaised < Test::Unit::TestCase
+  def setup
+    @request    = ActionController::TestRequest.new
+    @response   = ActionController::TestResponse.new
+  end
+
+  def test_exception_raised_when_layout_file_not_found
+    @controller = SetsNonExistentLayoutFile.new
+    get :hello
+    @response.template.class.module_eval { attr_accessor :exception }
+    assert_equal ActionController::MissingTemplate, @response.template.exception.class
+  end
+end