class RSpec::Core::Bisect::ExampleMinimizer

def prep
  notify(:bisect_starting, :original_cli_args => shell_command.original_cli_args,
                           :bisect_runner => runner.class.name)
  _, duration = track_duration do
    original_results    = runner.original_results
    @all_example_ids    = original_results.all_example_ids
    @failed_example_ids = original_results.failed_example_ids
    @remaining_ids      = non_failing_example_ids
  end
  if @failed_example_ids.empty?
    raise BisectFailedError, "\n\nNo failures found. Bisect only works " \
          "in the presence of one or more failing examples."
  else
    notify(:bisect_original_run_complete, :failed_example_ids => failed_example_ids,
                                          :non_failing_example_ids => non_failing_example_ids,
                                          :duration => duration)
  end
end