Read dry-effect (component)

application_controller.rb

class ApplicationController < ActionController::Base
  include Dry::Effects::Handler.Reader(:current_user)
  around_action :set_current_user

  private

  def set_current_user
    with_current_user(current_user) { yield }
  end
end

spec_config.rb

##Any sort of rspec config file that would be loaded in the spec above
RSpec.configure do |rspec|
  rspec.include Dry::Effects::Handler.Reader(:current_user), type: :component
end

user_profile_component.erb

<h1>
  <%= logged_in_user_name %>
</h1>
<%= current_user.id %>

user_profile_component.rb

class UserProfileComponent < ViewComponent::Base
  include Dry::Effects.Reader(:current_user, default: nil)

  def logged_in_user_name
    'You are logged in as: ' + current_user.name
  end
end

user_profile_component_spec.rb

require "rails_helper"

RSpec.describe UserProfileComponent, type: :component do
  let(:current_user) { User.new(name: 'Dr. Brule') }
  before { with_current_user(current_user) { render_inline(component) } }
  
  it { is_expected.to have_text 'You are logged in as: Dr. Brule' }
end