class ParallelTests::Test::Runner

def self.execute_command(cmd, process_number,  num_processes, options)
  env = (options[:env] || {}).merge(
    "TEST_ENV_NUMBER" => test_env_number(process_number),
    "PARALLEL_TEST_GROUPS" => num_processes
  )
  execute_command_and_capture_output(env, cmd, options[:serialize_stdout])
end