active_model_serializers/test/no_serialization_scope_test.rb

require "test_helper"

class NoSerializationScopeTest < ActionController::TestCase
  class ScopeSerializer
    def initialize(object, options)
      @object, @options = object, options
    end

    def as_json(*)
      { scope: @options[:scope].as_json }
    end
  end

  class ScopeSerializable
    def active_model_serializer
      ScopeSerializer
    end
  end

  class NoSerializationScopeController < ActionController::Base
    serialization_scope nil

    def index
      render json: ScopeSerializable.new
    end
  end

  tests NoSerializationScopeController

  def test_disabled_serialization_scope
    get :index, format: :json
    assert_equal '{"scope":null}', @response.body
  end
end