Rails 2.3.3.1

Update to latest Rails.
A little bit of jiggery-pokery is involved, since they
neglected to re-include vendored Rack in this release.

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

@@ -0,0 +1,60 @@
+require 'abstract_unit'
+require 'stringio'
+require 'logger'
+
+class FailsafeTest < ActionController::TestCase
+  FIXTURE_PUBLIC = "#{File.dirname(__FILE__)}/../fixtures/failsafe".freeze
+  
+  def setup
+    @old_error_file_path = ActionController::Failsafe.error_file_path
+    ActionController::Failsafe.error_file_path = FIXTURE_PUBLIC
+    @app = mock
+    @log_io = StringIO.new
+    @logger = Logger.new(@log_io)
+    @failsafe = ActionController::Failsafe.new(@app)
+    @failsafe.stubs(:failsafe_logger).returns(@logger)
+  end
+  
+  def teardown
+    ActionController::Failsafe.error_file_path = @old_error_file_path
+  end
+  
+  def app_will_raise_error!
+    @app.expects(:call).then.raises(RuntimeError.new("Printer on fire"))
+  end
+  
+  def test_calls_app_and_returns_its_return_value
+    @app.expects(:call).returns([200, { "Content-Type" => "text/html" }, "ok"])
+    assert_equal [200, { "Content-Type" => "text/html" }, "ok"], @failsafe.call({})
+  end
+  
+  def test_writes_to_log_file_on_exception
+    app_will_raise_error!
+    @failsafe.call({})
+    assert_match /Printer on fire/, @log_io.string     # Logs exception message.
+    assert_match /failsafe_test\.rb/, @log_io.string   # Logs backtrace.
+  end
+  
+  def test_returns_500_internal_server_error_on_exception
+    app_will_raise_error!
+    response = @failsafe.call({})
+    assert_equal 3, response.size    # It is a valid Rack response.
+    assert_equal 500, response[0]    # Status is 500.
+  end
+  
+  def test_renders_error_page_file_with_erb
+    app_will_raise_error!
+    response = @failsafe.call({})
+    assert_equal 500, response[0]
+    assert_equal "hello my world", response[2].join
+  end
+  
+  def test_returns_a_default_message_if_erb_rendering_failed
+    app_will_raise_error!
+    @failsafe.expects(:render_template).raises(RuntimeError.new("Harddisk is crashing"))
+    response = @failsafe.call({})
+    assert_equal 500, response[0]
+    assert_match /500 Internal Server Error/, response[2].join
+    assert_match %r(please read this web application's log file), response[2].join
+  end
+end