diff options
Diffstat (limited to 'railties/lib/rails')
| -rw-r--r-- | railties/lib/rails/application/finisher.rb | 37 | ||||
| -rw-r--r-- | railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt | 15 |
2 files changed, 47 insertions, 5 deletions
diff --git a/railties/lib/rails/application/finisher.rb b/railties/lib/rails/application/finisher.rb index 1cf44a480c..109c560c80 100644 --- a/railties/lib/rails/application/finisher.rb +++ b/railties/lib/rails/application/finisher.rb @@ -1,5 +1,8 @@ # frozen_string_literal: true +require "active_support/core_ext/string/inflections" +require "active_support/core_ext/array/conversions" + module Rails class Application module Finisher @@ -21,6 +24,40 @@ module Rails end end + # This will become an error if/when we remove classic mode. The plan is + # autoloaders won't be configured up to this point in the finisher, so + # constants just won't be found, raising regular NameError exceptions. + initializer :warn_if_autoloaded, before: :let_zeitwerk_take_over do + next if config.cache_classes + next if ActiveSupport::Dependencies.autoloaded_constants.empty? + + autoloaded = ActiveSupport::Dependencies.autoloaded_constants + constants = "constant".pluralize(autoloaded.size) + enum = autoloaded.to_sentence + have = autoloaded.size == 1 ? "has" : "have" + these = autoloaded.size == 1 ? "This" : "These" + example = autoloaded.first + example_klass = example.constantize.class + + ActiveSupport::DescendantsTracker.clear + ActiveSupport::Dependencies.clear + + ActiveSupport::Deprecation.warn(<<~WARNING) + Initialization autoloaded the #{constants} #{enum}. + + Being able to do this is deprecated. Autoloading during initialization is going + to be an error condition in future versions of Rails. + + Reloading does not reboot the application, and therefore code executed during + initialization does not run again. So, if you reload #{example}, for example, + the expected changes won't be reflected in that stale #{example_klass} object. + + #{these} autoloaded #{constants} #{have} been unloaded. + + Please, check the "Autoloading and Reloading Constants" guide for solutions. + WARNING + end + initializer :let_zeitwerk_take_over do if config.autoloader == :zeitwerk require "active_support/dependencies/zeitwerk_integration" diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt index 63ed3fa952..c66e349442 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt @@ -1,11 +1,16 @@ +# The test environment is used exclusively to run your application's +# test suite. You never need to work with it otherwise. Remember that +# your test database is "scratch space" for the test suite and is wiped +# and recreated between test runs. Don't rely on the data there! + Rails.application.configure do # Settings specified here will take precedence over those in config/application.rb. - - # The test environment is used exclusively to run your application's - # test suite. You never need to work with it otherwise. Remember that - # your test database is "scratch space" for the test suite and is wiped - # and recreated between test runs. Don't rely on the data there! + <%# Spring executes the reloaders when files change. %> + <%- if spring_install? -%> + config.cache_classes = false + <%- else -%> config.cache_classes = true + <%- end -%> # Do not eager load code on boot. This avoids loading your whole application # just for the purpose of running a single test. If you are using a tool that |