RSpec: Stub private method
should_receive(:method) works whether the visibility of :method is public or private.
You can use allow_any_instance_of method to stub or mock any instance of a classfor e.g. you have a class named Foo with some private methods than you can do something like this
allow_any_instance_of(Foo).to receive(:private_method) do #do somethingend In case if there you have module also, you can do something like this
allow_any_instance_of(Module::Foo).to receive(:private_method) do #do somethingendYou can find more details about allow_any_instance_of() method at Official Documentation
Why do you want to test the private methods? They're private for a reason; to prevent access from external calls. Testing the public methods that rely on the private methods should be sufficient.