vendor/rails/actionpack/test/controller/dispatcher_test.rb

   1 require 'abstract_unit'
   2
   3 uses_mocha 'dispatcher tests' do
   4
   5 require 'action_controller/dispatcher'
   6
   7 class DispatcherTest < Test::Unit::TestCase
   8   Dispatcher = ActionController::Dispatcher
   9
  10   def setup
  11     @output = StringIO.new
  12     ENV['REQUEST_METHOD'] = 'GET'
  13
  14     # Clear callbacks as they are redefined by Dispatcher#define_dispatcher_callbacks
  15     Dispatcher.instance_variable_set("@prepare_dispatch_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
  16     Dispatcher.instance_variable_set("@before_dispatch_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
  17     Dispatcher.instance_variable_set("@after_dispatch_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
  18
  19     Dispatcher.stubs(:require_dependency)
  20
  21     @dispatcher = Dispatcher.new(@output)
  22   end
  23
  24   def teardown
  25     ENV.delete 'REQUEST_METHOD'
  26   end
  27
  28   def test_clears_dependencies_after_dispatch_if_in_loading_mode
  29     ActiveSupport::Dependencies.expects(:clear).once
  30     dispatch(@output, false)
  31   end
  32
  33   def test_reloads_routes_before_dispatch_if_in_loading_mode
  34     ActionController::Routing::Routes.expects(:reload).once
  35     dispatch(@output, false)
  36   end
  37
  38   def test_clears_asset_tag_cache_before_dispatch_if_in_loading_mode
  39     ActionView::Helpers::AssetTagHelper::AssetTag::Cache.expects(:clear).once
  40     dispatch(@output, false)
  41   end
  42
  43   def test_leaves_dependencies_after_dispatch_if_not_in_loading_mode
  44     ActionController::Routing::Routes.expects(:reload).never
  45     ActiveSupport::Dependencies.expects(:clear).never
  46
  47     dispatch
  48   end
  49
  50   # Stub out dispatch error logger
  51   class << Dispatcher
  52     def log_failsafe_exception(status, exception); end
  53   end
  54
  55   def test_failsafe_response
  56     CGI.expects(:new).raises('some multipart parsing failure')
  57     Dispatcher.expects(:log_failsafe_exception)
  58
  59     assert_nothing_raised { dispatch }
  60
  61     assert_equal "Status: 400 Bad Request\r\nContent-Type: text/html\r\n\r\n<html><body><h1>400 Bad Request</h1></body></html>", @output.string
  62   end
  63
  64   def test_prepare_callbacks
  65     a = b = c = nil
  66     Dispatcher.to_prepare { |*args| a = b = c = 1 }
  67     Dispatcher.to_prepare { |*args| b = c = 2 }
  68     Dispatcher.to_prepare { |*args| c = 3 }
  69
  70     # Ensure to_prepare callbacks are not run when defined
  71     assert_nil a || b || c
  72
  73     # Run callbacks
  74     @dispatcher.send :run_callbacks, :prepare_dispatch
  75
  76     assert_equal 1, a
  77     assert_equal 2, b
  78     assert_equal 3, c
  79
  80     # Make sure they are only run once
  81     a = b = c = nil
  82     @dispatcher.send :dispatch
  83     assert_nil a || b || c
  84   end
  85
  86   def test_to_prepare_with_identifier_replaces
  87     a = b = nil
  88     Dispatcher.to_prepare(:unique_id) { |*args| a = b = 1 }
  89     Dispatcher.to_prepare(:unique_id) { |*args| a = 2 }
  90
  91     @dispatcher.send :run_callbacks, :prepare_dispatch
  92     assert_equal 2, a
  93     assert_equal nil, b
  94   end
  95
  96   private
  97     def dispatch(output = @output, cache_classes = true)
  98       controller = mock
  99       controller.stubs(:process).returns(controller)
 100       controller.stubs(:out).with(output).returns('response')
 101
 102       ActionController::Routing::Routes.stubs(:recognize).returns(controller)
 103
 104       Dispatcher.define_dispatcher_callbacks(cache_classes)
 105       Dispatcher.dispatch(nil, {}, output)
 106     end
 107
 108     def assert_subclasses(howmany, klass, message = klass.subclasses.inspect)
 109       assert_equal howmany, klass.subclasses.size, message
 110     end
 111 end
 112
 113 end