class RSpec::Expectations::PositiveExpectationHandler

def self.handle_matcher(actual, initial_matcher, custom_message=nil, &block)
  ExpectationHelper.with_matcher(self, initial_matcher, custom_message) do |matcher|
    return ::RSpec::Matchers::BuiltIn::PositiveOperatorMatcher.new(actual) unless initial_matcher
    match_result = matcher.matches?(actual, &block)
    if custom_message && match_result.respond_to?(:error_generator)
      match_result.error_generator.opts[:message] = custom_message
    end
    match_result || ExpectationHelper.handle_failure(matcher, custom_message, :failure_message)
  end
end