#!/bin/sh

exec 2>&1

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

    assertEquals "free exit value" "0" "${rtrn}"
    grep -E '^[[:space:]]+total[[:space:]]+used[[:space:]]+free[[:space:]]+shared[[:space:]]+buff/cache[[:space:]]+available$' "${stdoutF}" > /dev/null
    assertTrue 'header line' $?

    grep -E '^Mem:([[:space:]]+[[:digit:]]+){6}$' "${stdoutF}" > /dev/null
    assertTrue 'Mem line' $?
    grep -E '^Swap:([[:space:]]+[[:digit:]]+){3}$' "${stdoutF}" > /dev/null
    assertTrue 'Swap line' $?
}

test_total() {
    ( free -t >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "free exit value" "0" "${rtrn}"
    grep -E '^[[:space:]]+total[[:space:]]+used[[:space:]]+free[[:space:]]+shared[[:space:]]+buff/cache[[:space:]]+available$' "${stdoutF}" > /dev/null
    assertTrue 'header line' $?

    grep -E '^Mem:([[:space:]]+[[:digit:]]+){6}$' "${stdoutF}" > /dev/null
    assertTrue 'Mem line' $?
    grep -E '^Swap:([[:space:]]+[[:digit:]]+){3}$' "${stdoutF}" > /dev/null
    assertTrue 'Swap line' $?
    grep -E '^Total:([[:space:]]+[[:digit:]]+){3}$' "${stdoutF}" > /dev/null
    assertTrue 'Total 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