# frozen_string_literal: true

require 'fast_spec_helper'
require 'rubocop'
require_relative '../../../rubocop/cop/prefer_class_methods_over_module'

RSpec.describe RuboCop::Cop::PreferClassMethodsOverModule do
  subject(:cop) { described_class.new }

  it 'flags violation when using module ClassMethods and corrects', :aggregate_failures do
    expect_offense(<<~RUBY)
      module Foo
        extend ActiveSupport::Concern

        module ClassMethods
        ^^^^^^^^^^^^^^^^^^^ Do not use module ClassMethods, use class_methods block instead.
          def a_class_method
          end
        end
      end
    RUBY

    expect_correction(<<~RUBY)
      module Foo
        extend ActiveSupport::Concern

        class_methods do
          def a_class_method
          end
        end
      end
    RUBY
  end

  it "doesn't flag violation when using class_methods" do
    expect_no_offenses(<<~RUBY)
      module Foo
        extend ActiveSupport::Concern

        class_methods do
          def a_class_method
          end
        end
      end
    RUBY
  end

  it "doesn't flag violation when module is not extending ActiveSupport::Concern" do
    expect_no_offenses(<<~RUBY)
      module Foo
        module ClassMethods
          def a_class_method
          end
        end
      end
    RUBY
  end

  it "doesn't flag violation when ClassMethods is used inside a class" do
    expect_no_offenses(<<~RUBY)
      class Foo
        module ClassMethods
          def a_class_method
          end
        end
      end
    RUBY
  end

  it "doesn't flag violation when not using either class_methods or ClassMethods" do
    expect_no_offenses(<<~RUBY)
      module Foo
        extend ActiveSupport::Concern

        def a_method
        end
      end
    RUBY
  end
end
