Ensure that the proper accept header value is set during tests.

Signed-off-by: Yehuda Katz <wycats@gmail.com>

actionpack/lib/action_controller/base/mime_responds.rb

@@ -146,12 +146,12 @@ module ActionController #:nodoc:
     #
     #   Mime::Type.register "image/jpg", :jpg
     def respond_to(*mimes, &block)
+      raise ArgumentError, "respond_to takes either types or a block, never both" if mimes.any? && block_given?
       responder = Responder.new
-
       block.call(responder) if block_given?
 
       mimes = collect_mimes_from_class_level if mimes.empty?
-      mimes.each { |mime| responder.send(mime) }
+      mimes.each { |mime| responder.custom(mime) }
 
       if format = request.negotiate_mime(responder.order)
         # TODO It should be just: self.formats = [ :foo ]

actionpack/test/dispatch/request_test.rb

@@ -338,16 +338,11 @@ class RequestTest < ActiveSupport::TestCase
   end
 
   test "XMLHttpRequest" do
-    begin
-      ActionController::Base.use_accept_header, old =
-        false, ActionController::Base.use_accept_header
-
+    with_accept_header false do
       request = stub_request 'HTTP_X_REQUESTED_WITH' => 'XMLHttpRequest'
       request.expects(:parameters).at_least_once.returns({})
       assert request.xhr?
       assert_equal Mime::JS, request.format
-    ensure
-      ActionController::Base.use_accept_header = old
     end
   end
 
@@ -396,7 +391,8 @@ class RequestTest < ActiveSupport::TestCase
     assert_equal({"bar" => 2}, request.query_parameters)
   end
 
-  test "formats" do
+  test "formats with accept header" do
+    with_accept_header true do
       request = stub_request 'HTTP_ACCEPT' => 'text/html'
       request.expects(:parameters).at_least_once.returns({})
       assert_equal [ Mime::HTML ], request.formats
@@ -404,20 +400,17 @@ class RequestTest < ActiveSupport::TestCase
       request = stub_request 'CONTENT_TYPE' => 'application/xml; charset=UTF-8'
       request.expects(:parameters).at_least_once.returns({})
       assert_equal with_set(Mime::XML, Mime::HTML), request.formats
+    end
 
-    begin
-      ActionController::Base.use_accept_header, old =
-        false, ActionController::Base.use_accept_header
-
+    with_accept_header false do
       request = stub_request
       request.expects(:parameters).at_least_once.returns({ :format => :txt })
       assert_equal with_set(Mime::TEXT), request.formats
-    ensure
-      ActionController::Base.use_accept_header = old
     end
   end
 
   test "negotiate_mime" do
+    with_accept_header true do
       request = stub_request 'HTTP_ACCEPT' => 'text/html'
       request.expects(:parameters).at_least_once.returns({})
 
@@ -430,6 +423,7 @@ class RequestTest < ActiveSupport::TestCase
       assert_equal Mime::XML, request.negotiate_mime([Mime::XML, Mime::CSV])
       assert_equal Mime::CSV, request.negotiate_mime([Mime::CSV, Mime::YAML])
     end
+  end
 
 protected
 
@@ -441,4 +435,10 @@ protected
     args + Mime::SET
   end
 
+  def with_accept_header(value)
+    ActionController::Base.use_accept_header, old = value, ActionController::Base.use_accept_header
+    yield
+  ensure
+    ActionController::Base.use_accept_header = old
+  end
 end