authenticate_user! disables all other callbacks, doesn't authenticate at all

[samnissen]

Similar to #277 but worse because I can't write any code to route around, since attempting to authenticate is the last callback that can execute. (Note in the below example this_fn_does_not_exist! truly does not exist.)

class ApplicationController < ActionController::API
  acts_as_token_authentication_handler_for User, fallback: :none
  # ...

class MyModelsController < ApplicationController
  before_action :authenticate_user!
  before_action :this_fn_does_not_exist!
  # ...

require 'rails_helper'

RSpec.describe MyModelsController, type: :controller do
  # ...
  let(:invalid_session) { { } }

  describe "GET #show" do
    it "does not assign the requested my_model as @my_model" do
      @my_model = create(:my_model, valid_attributes)
      get :show, format: :json, params: { id: @my_model.id }, session: invalid_session
      expect(assigns(:my_model)).to eq(nil)
    end
  end
  # ...

$ rspec spec/controllers/my_models_controller.rb
F

Failures:

  1) MyModelsController GET #show does not assign the requested my_model as @my_model
     Failure/Error: expect(assigns(:my_model)).to eq(nil)

       expected: nil
            got: #<my_model id: 123, #...