ruby on rails - How could I test customized object under lib folder -

let's have custom object put @ /lib folder

i want test it's functionality under rspec, how ?

how create test function ? should go ? thanks

first of all,
lib path added in autoload path. if not, add config.autoload_paths << rails.root.join('lib')

you have spec directory /spec. create lib directory /spec/lib , create {lib_test_name}_spec.rb

and write code same other spec.