perf test: Add header shell test

#!/bin/bash

# perf header tests

# SPDX-License-Identifier: GPL-2.0

set -e

err=0

perfdata=$(mktemp /tmp/__perf_test_header.perf.data.XXXXX)

script_output=$(mktemp /tmp/__perf_test_header.perf.data.XXXXX.script)

cleanup() {

  rm -f "${perfdata}"

  rm -f "${perfdata}".old

  rm -f "${script_output}"

  trap - EXIT TERM INT

}

trap_cleanup() {

  echo "Unexpected signal in ${FUNCNAME[1]}"

  cleanup

  exit 1

}

trap trap_cleanup EXIT TERM INT

check_header_output() {

  declare -a fields=(

    "captured"

    "hostname"

    "os release"

    "arch"

    "cpuid"

    "nrcpus"

    "event"

    "cmdline"

    "perf version"

    "sibling (cores|dies|threads)"

    "sibling threads"

    "total memory"

  )

  for i in "${fields[@]}"

  do

    if ! grep -q -E "$i" "${script_output}"

    then

      echo "Failed to find expect $i in output"

      err=1

    fi

  done

}

test_file() {

  echo "Test perf header file"

  perf record -o "${perfdata}" -g -- perf test -w noploop

  perf report --header-only -I -i "${perfdata}" > "${script_output}"

  check_header_output

  echo "Test perf header file [Done]"

}

test_pipe() {

  echo "Test perf header pipe"

  perf record -o - -g -- perf test -w noploop | perf report --header-only -I -i - > "${script_output}"

  check_header_output

  echo "Test perf header pipe [Done]"

}

test_file

test_pipe

cleanup

exit $err