an_example_class_with_callbacks.rb

# frozen_string_literal: true

# RSpec example that tests for defined [ActiveSupport::Callbacks](https://apidock.com/rails/ActiveSupport/Callbacks)
#
#     class Klass
#       include ActiveSupport::Callbacks
#       define_callbacks :kallback, :on_error
#     end
#
#     RSpec.describe Klass do
#       it_behaves_like "an example class with callbacks", described_class, %i[kallback on_error]
#     end

RSpec.shared_examples_for "an example class with callbacks" do |callback_module, callbacks|
  subject(:example_class) { Class.new.include callback_module }

  it { is_expected.to include_module ActiveSupport::Callbacks }

  describe "__callbacks" do
    subject { example_class.__callbacks.keys }

    it { is_expected.to match_array Array.wrap(callbacks) }
  end
end