require "abstract_unit" class ReloaderTest < ActiveSupport::TestCase teardown do ActiveSupport::Reloader.reset_callbacks :prepare ActiveSupport::Reloader.reset_callbacks :complete end class MyBody < Array def initialize(&block) @on_close = block end def foo "foo" end def bar "bar" end def close @on_close.call if @on_close end end def test_prepare_callbacks a = b = c = nil reloader.to_prepare { |*args| a = b = c = 1 } reloader.to_prepare { |*args| b = c = 2 } reloader.to_prepare { |*args| c = 3 } # Ensure to_prepare callbacks are not run when defined assert_nil a || b || c # Run callbacks call_and_return_body assert_equal 1, a assert_equal 2, b assert_equal 3, c end def test_returned_body_object_always_responds_to_close body = call_and_return_body assert_respond_to body, :close end def test_returned_body_object_always_responds_to_close_even_if_called_twice body = call_and_return_body assert_respond_to body, :close body.close body = call_and_return_body assert_respond_to body, :close body.close end def test_condition_specifies_when_to_reload i, j = 0, 0, 0, 0 reloader = reloader(lambda { i < 3 }) reloader.to_prepare { |*args| i += 1 } reloader.to_complete { |*args| j += 1 } app = middleware(lambda { |env| [200, {}, []] }, reloader) 5.times do resp = app.call({}) resp[2].close end assert_equal 3, i assert_equal 3, j end def test_returned_body_object_behaves_like_underlying_object body = call_and_return_body do b = MyBody.new b << "hello" b << "world" [200, { "Content-Type" => "text/html" }, b] end assert_equal 2, body.size assert_equal "hello", body[0] assert_equal "world", body[1] assert_equal "foo", body.foo assert_equal "bar", body.bar end def test_it_calls_close_on_underlying_object_when_close_is_called_on_body close_called = false body = call_and_return_body do b = MyBody.new do close_called = true end [200, { "Content-Type" => "text/html" }, b] end body.close assert close_called end def test_returned_body_object_responds_to_all_methods_supported_by_underlying_object body = call_and_return_body do [200, { "Content-Type" => "text/html" }, MyBody.new] end assert_respond_to body, :size assert_respond_to body, :each assert_respond_to body, :foo assert_respond_to body, :bar end def test_complete_callbacks_are_called_when_body_is_closed completed = false reloader.to_complete { completed = true } body = call_and_return_body assert !completed body.close assert completed end def test_prepare_callbacks_arent_called_when_body_is_closed prepared = false reloader.to_prepare { prepared = true } body = call_and_return_body prepared = false body.close assert !prepared end def test_complete_callbacks_are_called_on_exceptions completed = false reloader.to_complete { completed = true } begin call_and_return_body do raise "error" end rescue end assert completed end private def call_and_return_body(&block) app = middleware(block || proc { [200, {}, "response"] }) _, _, body = app.call("rack.input" => StringIO.new("")) body end def middleware(inner_app, reloader = reloader()) ActionDispatch::Reloader.new(inner_app, reloader) end def reloader(check = lambda { true }) @reloader ||= begin reloader = Class.new(ActiveSupport::Reloader) reloader.check = check reloader end end end