class RSpec::Core::Configuration

def last_run_statuses
  @last_run_statuses ||= Hash.new(UNKNOWN_STATUS).tap do |statuses|
    if (path = example_status_persistence_file_path)
      begin
        ExampleStatusPersister.load_from(path).inject(statuses) do |hash, example|
          status = example[:status]
          status = UNKNOWN_STATUS unless VALID_STATUSES.include?(status)
          hash[example.fetch(:example_id)] = status
          hash
        end
      rescue SystemCallError => e
        RSpec.warning "Could not read from #{path.inspect} (configured as " \
                      "`config.example_status_persistence_file_path`) due " \
                      "to a system error: #{e.inspect}. Please check that " \
                      "the config option is set to an accessible, valid " \
                      "file path", :call_site => nil
      end
    end
  end
end