Speed up development by only reloading classes if dependencies files changed.

This can be turned off by setting `config.reload_classes_only_on_change` to false.

Extensions like Active Record should add their respective files like db/schema.rb and db/structure.sql to `config.watchable_files` if they want their changes to affect classes reloading.

Thanks to https://github.com/paneq/active_reload and Pastorino for the inspiration. <3

2 files changed, 3 insertions, 1 deletions

diff --git a/railties/test/application/console_test.rb b/railties/test/application/console_test.rb
index 2073c780bf..6f9d8d57b1 100644
--- a/railties/test/application/console_test.rb
+++ b/railties/test/application/console_test.rb
@@ -61,7 +61,8 @@ class ConsoleTest < Test::Unit::TestCase
 
     load_environment
     assert User.new.respond_to?(:name)
-    assert !User.new.respond_to?(:age)
+
+    sleep(1)
 
     app_file "app/models/user.rb", <<-MODEL
       class User
diff --git a/railties/test/application/loading_test.rb b/railties/test/application/loading_test.rb
index 47c6fd5c6e..c4908915dc 100644
--- a/railties/test/application/loading_test.rb
+++ b/railties/test/application/loading_test.rb
@@ -66,6 +66,7 @@ class LoadingTest < Test::Unit::TestCase
   def test_descendants_are_cleaned_on_each_request_without_cache_classes
     add_to_config <<-RUBY
       config.cache_classes = false
+      config.reload_classes_only_on_change = false
     RUBY
 
     app_file "app/models/post.rb", <<-MODEL