comptestinit () {
  setopt extendedglob
  [[ -d $ZTST_testdir/Modules/zsh ]] && module_path=( $ZTST_testdir/Modules )
  fpath=( $ZTST_srcdir/../Functions/*~*/CVS(/)
          $ZTST_srcdir/../Completion
          $ZTST_srcdir/../Completion/*/*~*/CVS(/) )

  zmodload -i zsh/zpty || return $?

  comptest_zsh=${ZSH:-zsh}
  comptest_keymap=e

  while getopts vz: opt; do
    case $opt in
      z) comptest_zsh="$OPTARG";;
      v) comptest_keymap="v";;
    esac
  done
  (( OPTIND > 1 )) && shift $(( OPTIND - 1 ))

  export PS1="<PROMPT>"
  zpty zsh "$comptest_zsh -f +Z"

  zpty -r zsh log1 "*<PROMPT>*" || { 
    print "first prompt hasn't appeared."
    return 1
  }

  comptesteval \
"export LC_ALL=C" \
"emulate -R zsh" \
"export ZDOTDIR=$ZTST_testdir" \
"module_path=( $module_path )" \
"fpath=( $fpath )" \
"bindkey -$comptest_keymap" \
'LISTMAX=10000000
stty 38400 columns 80 rows 24 tabs -icanon -iexten
TERM=vt100
KEYTIMEOUT=1
setopt zle
autoload -U compinit
compinit -u
zstyle ":completion:*:default" list-colors "no=<NO>" "fi=<FI>" "di=<DI>" "ln=<LN>" "pi=<PI>" "so=<SO>" "bd=<BD>" "cd=<CD>" "ex=<EX>" "mi=<MI>" "tc=<TC>" "sp=<SP>" "lc=<LC>" "ec=<EC>\n" "rc=<RC>"
zstyle ":completion:*" group-name ""
zstyle ":completion:*:messages" format "<MESSAGE>%d</MESSAGE>
"
zstyle ":completion:*:descriptions" format "<DESCRIPTION>%d</DESCRIPTION>
"
zstyle ":completion:*:options" verbose yes
zstyle ":completion:*:values" verbose yes
setopt noalwayslastprompt listrowsfirst completeinword
zmodload zsh/complist
expand-or-complete-with-report () {
  print -lr "<WIDGET><expand-or-complete>"
  zle expand-or-complete
  print -lr - "<LBUFFER>$LBUFFER</LBUFFER>" "<RBUFFER>$RBUFFER</RBUFFER>"
  zle clear-screen
  zle -R
}
list-choices-with-report () {
  print -lr "<WIDGET><list-choices>"
  zle list-choices
  zle clear-screen
  zle -R
}
comp-finish () {
  print "<WIDGET><finish>"
  zle kill-whole-line
  zle clear-screen
  zle -R
}
zle-finish () {
  local buffer="$BUFFER" cursor="$CURSOR" mark="$MARK"
  (( region_active)) || unset mark
  BUFFER=""
  zle -I
  zle clear-screen
  zle redisplay
  print -lr "<WIDGET><finish>" "BUFFER: $buffer" "CURSOR: $cursor"
  (( $+mark )) && print -lr "MARK: $mark"
  zle accept-line
}
zle -N expand-or-complete-with-report
zle -N list-choices-with-report
zle -N comp-finish
zle -N zle-finish
bindkey "^I" expand-or-complete-with-report
bindkey "^D" list-choices-with-report
bindkey "^Z" comp-finish
bindkey "^X" zle-finish
bindkey -a "^X" zle-finish
'
}

zpty_flush() {
  local junk
  if zpty -r -t zsh junk \*; then
    (( ZTST_verbose > 2 )) && print -n -u $ZTST_fd "$*: ${(V)junk}"
    while zpty -r -t zsh junk \* ; do
      (( ZTST_verbose > 2 )) && print -n -u $ZTST_fd "${(V)junk}"
    done
    (( ZTST_verbose > 2 )) && print -u $ZTST_fd ''
  fi
}

zpty_run() {
  zpty -w zsh "$*"
  zpty -r -m zsh log "*<PROMPT>*" || {
    print "prompt hasn't appeared."
    return 1
  }
}

comptesteval () {
  local tmp=/tmp/comptest.$$

  print -lr - "$@" > $tmp
  # zpty_flush Before comptesteval
  zpty -w zsh ". $tmp"
  zpty -r -m zsh log_eval "*<PROMPT>*" || {
    print "prompt hasn't appeared."
    return 1
  }
  zpty_flush After comptesteval
  rm $tmp
}

comptest () {
  input="$*"
  zpty -n -w zsh "$input"$'\C-Z'
  zpty -r -m zsh log "*<WIDGET><finish>*<PROMPT>*" || {
    print "failed to invoke finish widget."
    return 1
  }

  logs=(${(s:<WIDGET>:)log})
  shift logs

  for log in "$logs[@]"; do
    if [[ "$log" = (#b)*$'<LBUFFER>'(*)$'</LBUFFER>\r\n<RBUFFER>'(*)$'</RBUFFER>'* ]]; then
      print -lr "line: {$match[1]}{$match[2]}"
    fi
    while (( ${(N)log#*(#b)(<LC><(??)><RC>(*)<EC>|<DESCRIPTION>(*)</DESCRIPTION>|<MESSAGE>(*)</MESSAGE>|<COMPADD>(*)</COMPADD>|<INSERT_POSITIONS>(*)</INSERT_POSITIONS>)} )); do
      log="${log[$mend[1]+1,-1]}"
      if (( 0 <= $mbegin[2] )); then
	if [[ $match[2] != TC && $match[3] != \ # ]]; then
	  print -lr "$match[2]:{${match[3]%${(%):-%E}}}"
	fi
      elif (( 0 <= $mbegin[4] )); then
	print -lr "DESCRIPTION:{$match[4]}"
      elif (( 0 <= $mbegin[5] )); then
	print -lr "MESSAGE:{$match[5]}"
      elif (( 0 <= $mbegin[6] )); then
        print -lr "COMPADD:{${${match[6]}//[$'\r\n']/}}"
      elif (( 0 <= $mbegin[7] )); then
        print -lr "INSERT_POSITIONS:{${${match[7]}//[$'\r\n']/}}"
      fi
    done
  done
}

zletest () {
  local first=0
  for input; do
    # zpty_flush Before zletest
    # sleep for $KEYTIMEOUT
    (( first++ )) && { sleep 2 & } | read -t 0.011 -u 0 -k 1
    zpty -n -w zsh "$input"
  done
  zpty -n -w zsh $'\C-X'
  zpty -r -m zsh log "*<WIDGET><finish>*<PROMPT>*" || {
    print "failed to invoke finish widget."
    return 1
  }
  # zpty_flush After zletest
  print -lr "${(@)${(@ps:\r\n:)log##*<WIDGET><finish>}[2,-2]}"
}