#!/bin/sh

exec 2>&1

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

    assertEquals "fuser exit value" "1" "${rtrn}"
    grep -E '^No process specification given$' "${stderrF}" > /dev/null
    assertTrue 'error message' $?
}

test_no_process() {
    ( fuser "${testF}" >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "fuser exit value" "1" "${rtrn}"
    assertFalse "unexpected output to stderr" "[ -s '${stderrF}' ]"
}

test_a_no_process() {
    ( fuser -a "${testF}" >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "fuser exit value" "1" "${rtrn}"
    grep -qE "^${testF}:$" "${stderrF}"
    assertTrue 'File matches no process' $?
}

test_my_cwd() {
    myCWD=$(readlink "/proc/${myPID}/cwd" )
    ( fuser "${myCWD}" >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "fuser exit value" "0" "${rtrn}"
    grep -qE "${myPID}" "${stdoutF}"
    assertTrue 'STDOUT has my PID' $?
    grep -qE "^${myCWD}:.*c" "${stderrF}"
    assertTrue 'STDERR has my path and c' $?
}

test_my_exe() {
    myEXE=$(readlink "/proc/${myPID}/exe" )
    ( fuser "${myEXE}" >"${stdoutF}" 2>"${stderrF}" )
    rtrn=$?

    assertEquals "fuser exit value" "0" "${rtrn}"
    grep -qE "${myPID}" "${stdoutF}"
    assertTrue 'STDOUT has my PID' $?
    grep -qE "^${myEXE}:.*e" "${stderrF}"
    assertTrue 'STDERR has my path and e' $?
}
oneTimeSetUp() {
  # Define global variables for command output.
  stdoutF="${AUTOPKGTEST_TMP}/stdout"
  stderrF="${AUTOPKGTEST_TMP}/stderr"
  testF="${AUTOPKGTEST_TMP}/test-file"
  touch "${testF}"
  myPID=$$
}

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


# shellcheck disable=SC1091
. shunit2