#!/bin/sh

exec 2>&1

test_no_arguments() {
    ( vmstat >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "vmstat exit value" "0" "${rtrn}"

    grep -E '^procs[ -]+memory[ -]+swap[ -]+io[ -]+system[ -]+cpu[ -]+$' "${stdoutF}" > /dev/null
    assertTrue 'header line' $?
    grep -E '^ +r +b +swpd +free +buff +cache +si +so +bi +bo +in +cs us sy id wa st gu$' "${stdoutF}" >/dev/null
    assertTrue 'header second line' $?
    grep -E '^([[:space:]]+[[:digit:]]+){18}$' "${stdoutF}" >/dev/null
    assertTrue 'value line' $?
}

test_forks() {
    ( vmstat -f >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "vmstat -f exit value" "0" "${rtrn}"

    grep -E '^[[:space:]]+[[:digit:]]+ forks$' "${stdoutF}" > /dev/null
    assertTrue 'fork output' $?
}

test_disk() {
    ( vmstat -d >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "vmstat -d exit value" "0" "${rtrn}"

    grep -E '^disk[ -]+reads[ -]+writes[ -]+IO[ -]+$' "${stdoutF}" > /dev/null
    assertTrue 'header line' $?
    grep -E '^ +total +merged +sectors +ms +total +merged +sectors +ms +cur +sec$' "${stdoutF}" >/dev/null
    assertTrue 'header second line' $?
    grep -E '^[[:alnum:]]+([[:space:]]+[[:digit:]]+){10}$' "${stdoutF}" >/dev/null
    assertTrue 'value line' $?
}

oneTimeSetUp() {
  # Define global variables for command output.
  stdoutF="${AUTOPKGTEST_TMP}/stdout"
  stderrF="${AUTOPKGTEST_TMP}/stderr"
}

setUp() {
  # Truncate the output files.
  cp /dev/null "${stdoutF}"
  cp /dev/null "${stderrF}"
}


# shellcheck disable=SC1091
. shunit2