class Tryouts::ExpectationEvaluators::Registry

def evaluator_for(expectation, test_case, context)
  evaluator_class = find_evaluator_class(expectation.type)
  unless evaluator_class
    raise ArgumentError, "No evaluator found for expectation type: #{expectation.type}"
  end
  evaluator_class.new(expectation, test_case, context)
end

def find_evaluator_class(expectation_type)
  @evaluators.find { |evaluator_class| evaluator_class.handles?(expectation_type) }
end

def register(evaluator_class)
  unless evaluator_class < Base
    raise ArgumentError, 'Evaluator must inherit from ExpectationEvaluators::Base'
  end
  @evaluators << evaluator_class unless @evaluators.include?(evaluator_class)
end

def registered_evaluators
  @evaluators.dup
end