This repo demonstrates a bug with rails autoloading.
If we run this server with:
config.eager_load = true
Then we will display a page at the root when we navigate to it.
if we run this server with:
config.eager_load = false
Then we will get the following error message:
NameError (uninitialized constant TestClass::ChildClass):
app/models/test_d.rb:4:in `foobar'
app/controllers/test_controller.rb:3:in `test'
An explanation of what we are doing.
We have a class TestClass which includes a module IncludeModule. IncludeModule itself also includes a module called ContainerModule which contains a class ChildClass.
We simply want to access ChildClass from within TestClass to call a method on it. This does not seem to be allowed by rails constant autoloading.