view tests/test-utils.sh @ 284:cacad987d785

Really finish with the sampling branch, this time merging all of it,
yes, even the last revision.  (The last revision was one that seeded the
RNG with the current time, which is helpful when trying to get multiple
independent-ish samples from the same database...)

# no shebang line: this file should be sourced by run-test.sh files

set -E

trap "exit 1" ERR

if [ -z "${AUDIODB}" ]; then
  AUDIODB=../../audioDB
fi

# FIXME: maybe generalize to multiple arguments?  Also, implement it
# properly, rather than just for a few floats that we know how to
# encode.  This might involve writing some C code, as Bash doesn't do
# Floating Point.  (scanf() is probably enough).

expect_clean_error_exit() {
  trap - ERR
  "$@"
  exit_code=$?
  trap "exit 1" ERR
  if [ $exit_code -eq 0 ]; then
    exit 1
  elif [ $exit_code -ge 126 ]; then
    exit 1
  fi
}

floatstring() {
  for arg in "$@"; do
    case ${arg} in
      0)
        printf "\x00\x00\x00\x00\x00\x00\x00\x00";;
      -0.5)
        printf "\x00\x00\x00\x00\x00\x00\xe0\xbf";;
      0.5)
        printf "\x00\x00\x00\x00\x00\x00\xe0\x3f";;
      -1)
        printf "\x00\x00\x00\x00\x00\x00\xf0\xbf";;
      1)
        printf "\x00\x00\x00\x00\x00\x00\xf0\x3f";;
      *)
        echo "bad arg to floatstring(): ${arg}"
        exit 1;;
    esac
  done
}

# FIXME: likewise.  And endianness issues (which are a reflection of
# the endianness of audioDB as of 2007-09-18, unfortunately).

intstring() {
  # works up to 9 for now
  if [ $1 -ge 10 ]; then echo "intstring() arg too large: ${1}"; exit 1; fi
  printf "%b\x00\x00\x00" "\\x${1}"
}

# Web services utilities
start_server() {
  $1 -s $2 &
  # HACK: deal with race on process creation
  sleep 1
  trap 'kill $!; exit 1' ERR
}

stop_server() {
  grep "${AUDIODB}" /proc/$1/cmdline > /dev/null
  kill $1
  # HACK: deal with race on process exit
  sleep 1
  expect_clean_error_exit grep ${AUDIODB} /proc/$1/cmdline
}

check_server() {
  grep "${AUDIODB}" /proc/$1/cmdline > /dev/null
}

expect_client_failure() {
  # FIXME: work out whether and how the client should report server
  # errors.  At present, the client exits with a zero exit code.
  "$@"
}