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913
 
# Tests for both trap builtin and TRAP* functions.

%prep

  setopt localtraps
  mkdir traps.tmp && cd traps.tmp

%test

  fn1() {
    trap 'print EXIT1' EXIT
    fn2() { trap 'print EXIT2' EXIT; }
    fn2
  }
  fn1
0:Nested `trap ... EXIT'
>EXIT2
>EXIT1

  fn1() {
    TRAPEXIT() { print EXIT1; }
    fn2() { TRAPEXIT() { print EXIT2; }; }
    fn2
  }
  fn1
0: Nested TRAPEXIT
>EXIT2
>EXIT1

  fn1() {
    trap 'print EXIT1' EXIT
    fn2() { trap - EXIT; }
    fn2
  }
  fn1
0:Nested `trap - EXIT' on `trap ... EXIT'
>EXIT1

  fn1() {
    TRAPEXIT() { print EXIT1; }
    fn2() { trap - EXIT; }
    fn2
  }
  fn1
0:Nested `trap - EXIT' on `TRAPEXIT'
>EXIT1

# We can't test an EXIT trap for the shell as a whole, because
# we're inside a function scope which we don't leave when the
# subshell exits.  Not sure if that's the correct behaviour, but
# it's sort of consistent.
  ( fn1() { trap 'print Function 1 going' EXIT; exit; print Not reached; }
    fn2() { trap 'print Function 2 going' EXIT; fn1; print Not reached; }
    fn2
  )
0:EXIT traps on functions when exiting from function
>Function 1 going
>Function 2 going

# $ZTST_exe is relative to the parent directory.
# We ought to fix this in ztst.zsh...
  (cd ..
  $ZTST_exe -fc 'TRAPEXIT() { print Exited.; }')
0:EXIT traps on a script
>Exited.

  trap -
  trap
  trap int INT
  trap sigterm SIGTERM
  trap quit 3
  trap
0: Outputting traps correctly
>trap -- int INT
>trap -- quit QUIT
>trap -- sigterm TERM

  fn1() {
    trap -
    trap
    trap 'print INT1' INT
    fn2() { trap 'print INT2' INT; trap; }
    trap
    fn2
    trap
  }
  fn1
0: Nested `trap ... INT', not triggered
>trap -- 'print INT1' INT
>trap -- 'print INT2' INT
>trap -- 'print INT1' INT

   fn1() {
    trap -
    trap
    TRAPINT() { print INT1; }
    fn2() { TRAPINT() { print INT2; }; trap; }
    trap
    fn2
    trap
  }
  fn1
0: Nested TRAPINT, not triggered
>TRAPINT () {
>	print INT1
>}
>TRAPINT () {
>	print INT2
>}
>TRAPINT () {
>	print INT1
>}

  fn1() {
    trap -
    trap 'print INT1' INT
    fn2() { trap - INT; trap; }
    trap
    fn2
    trap
  }
  fn1
0: Nested `trap - INT' on untriggered `trap ... INT'
>trap -- 'print INT1' INT
>trap -- 'print INT1' INT

# Testing the triggering of traps here is very unpleasant.
# The delays are attempts to avoid race conditions, though there is
# no guarantee that they will work.  Note the subtlety that the
# `sleep' in the function which receives the trap does *not* get the
# signal, only the parent shell, which is waiting for a SIGCHILD.
# (At least, that's what I think is happening.) Thus we have to wait at
# least the full two seconds to make sure we have got the output from the
# execution of the trap.

  print -u $ZTST_fd 'This test takes at least three seconds...'
  fn1() {
    trap 'print TERM1' TERM
    fn2() { trap 'print TERM2; return 1' TERM; sleep 2; }
    fn2 &
    sleep 1
    kill -TERM $!
    sleep 2
  }
  fn1
0: Nested `trap ... TERM', triggered on inner loop
>TERM2

  print -u $ZTST_fd 'This test, too, takes at least three seconds...'
  fn1() {
    trap 'print TERM1; return 1' TERM
    fn2() { trap 'print TERM2; return 1' TERM; }
    fn2
    sleep 2
  }
  fn1 &
  sleep 1
  kill -TERM $!
  sleep 2
0: Nested `trap ... TERM', triggered on outer loop
>TERM1

  TRAPZERR() { print error activated; }
  fn() { print start of fn; false; print end of fn; }
  fn
  fn() {
    setopt localoptions localtraps
    unfunction TRAPZERR
    print start of fn
    false
    print end of fn
  }
  fn
  unfunction TRAPZERR
  print finish
0: basic localtraps handling
>start of fn
>error activated
>end of fn
>start of fn
>end of fn
>finish

  TRAPZERR() { print 'ERR-or!'; }
  f() { print f; false; }
  t() { print t; }
  f
  f && t
  t && f && true
  t && f
  testunset() {
    setopt localtraps
    unset -f TRAPZERR
    print testunset
    false
    true
  }
  testunset
  f
  print status $?
  unfunction TRAPZERR
0: more sophisticated error trapping
>f
>ERR-or!
>f
>t
>f
>t
>f
>ERR-or!
>testunset
>f
>ERR-or!
>status 1

  f() {
    setopt localtraps
    TRAPWINCH() { print "Window changed.  That wrecked the test."; }
  }
  f
  f
  functions TRAPWINCH
1:Unsetting ordinary traps with localtraps.

#
# Returns from within traps are a perennial problem.
# The following two apply to returns in and around standard
# ksh-style traps.  The intention is that a return value from
# within the function is preserved (i.e. statuses set by the trap
# are ignored) unless the trap explicitly executes `return', which makes
# it return from the enclosing function.
#
  fn() { trap 'true' EXIT; return 1; }
  fn
1: ksh-style EXIT traps preserve return value

  inner() { trap 'return 3' EXIT; return 2; }
  outer() { inner; return 1; }
  outer
3: ksh-style EXIT traps can force return status of enclosing function

# Autoloaded traps are horrid, but unfortunately people expect
# them to work if we support them.
  echo "print Running exit trap" >TRAPEXIT
  ${${ZTST_exe##[^/]*}:-$ZTST_testdir/$ZTST_exe} -fc '
    fpath=(. $fpath)
    autoload TRAPEXIT
    print "Exiting, attempt 1"
    exit
    print "What?"
  '
  ${${ZTST_exe##[^/]*}:-$ZTST_testdir/$ZTST_exe} -fc '
    fpath=(. $fpath)
    autoload TRAPEXIT;
    fn() { print Some function }
    fn
    print "Exiting, attempt 2"
    exit
  '
0: autoloaded TRAPEXIT (exit status > 128 indicates an old bug is back)
>Exiting, attempt 1
>Running exit trap
>Some function
>Exiting, attempt 2
>Running exit trap

  print -u $ZTST_fd Another test that takes three seconds
  gotsig=0
  signal_handler() {
   echo "parent received signal"
   gotsig=1
  }
  child() {
   sleep 1
   echo "child sending signal"
   kill -15 $parentpid
   sleep 2
   echo "child exiting" 
   exit 33
  } 
  parentpid=$$
  child &
  childpid=$!
  trap signal_handler 15
  echo "parent waiting"
  wait $childpid
  cstatus=$?
  echo "wait #1 finished, gotsig=$gotsig, status=$cstatus"
  gotsig=0
  wait $childpid
  cstatus=$?
  echo "wait #2 finished, gotsig=$gotsig, status=$cstatus"
0:waiting for trapped signal
>parent waiting
>child sending signal
>parent received signal
>wait #1 finished, gotsig=1, status=143
>child exiting
>wait #2 finished, gotsig=0, status=33

  fn1() {
    setopt errexit
    trap 'echo error1' ZERR
    false
    print Shouldn\'t get here 1a
  }
  fn2() {
    setopt errexit
    trap 'echo error2' ZERR
    return 1
    print Shouldn\'t get here 2a
  }
  fn3() {
    setopt errexit
    TRAPZERR() { echo error3; }
    false
    print Shouldn\'t get here 3a
  }
  fn4() {
    setopt errexit
    TRAPZERR() { echo error4; }
    return 1
    print Shouldn\'t get here 4a
  }
  (fn1; print Shouldn\'t get here 1b)
  (fn2; print Shouldn\'t get here 2b)
  (fn3; print Shouldn\'t get here 3b)
  (fn4; print Shouldn\'t get here 4b)
1: Combination of ERR_EXIT and ZERR trap
>error1
>error2
>error3
>error4

   fn1() { TRAPZERR() { print trap; return 42; }; false; print Broken; }
   (fn1)
   print Working $?
0: Force return of containing function from TRAPZERR.
>trap
>Working 42

   fn2() { trap 'print trap; return 42' ZERR; false; print Broken }
   (fn2)
   print Working $?
0: Return with non-zero status triggered from within trap '...' ZERR.
>trap
>Working 42

   fn3() { TRAPZERR() { print trap; return 0; }; false; print OK this time; }
   (fn3)
   print Working $?
0: Normal return from TRAPZERR.
>trap
>OK this time
>Working 0

   fn4() { trap 'print trap; return 0' ZERR; false; print Broken; }
   (fn4)
   print Working $?
0: Return with zero status triggered from within trap '...' ZERR.
>trap
>Working 0

   { trap 'echo This subshell is exiting' EXIT; } | cat
0: EXIT trap set in current shell at left of pipeline
>This subshell is exiting

   ( trap 'echo This subshell is also exiting' EXIT; ) | cat
0: EXIT trap set in subshell at left of pipeline
>This subshell is also exiting

   ( trap 'echo Should only appear once at the end' EXIT
     ( : trap reset here ) | cat
     : trap not reset but not part of shell command list | cat
     echo nothing after this should appear $( : trap reset here too)
   )
0: EXIT trap set in subshell reset in subsubshell
>nothing after this should appear
>Should only appear once at the end

   echo $( trap 'echo command substitution exited' EXIT )
0: EXIT trap set in command substitution
>command substitution exited

   (cd ..; $ZTST_exe -fc 'setopt posixtraps;
   TRAPEXIT() { print Exited; }
   fn1() { trap; }
   setopt localtraps # should be ignored by EXIT
   fn2() { TRAPEXIT() { print No, really exited; } }
   fn1
   fn2
   fn1')
0:POSIX_TRAPS option
>TRAPEXIT () {
>	print Exited
>}
>TRAPEXIT () {
>	print No, really exited
>}
>No, really exited

   (cd ..; $ZTST_exe -fc 'unsetopt posixtraps;
   echo start program
   emulate sh -c '\''testfn() {
     echo start function
     set -o | grep posixtraps
     trap "echo EXIT TRAP TRIGGERED" EXIT
     echo end function
   }'\''
   testfn
   echo program continuing
   echo end of program')
0:POSIX_TRAPS effect on EXIT trap is sticky
>start program
>start function
>noposixtraps          off
>end function
>program continuing
>end of program
>EXIT TRAP TRIGGERED

   (cd ..; $ZTST_exe -fc '
     echo entering program
     emulate sh -c '\''trap "echo POSIX exit trap triggered" EXIT'\''
     fn() {
        trap "echo native zsh function-local exit trap triggered" EXIT
        echo entering native zsh function
     }
     fn
     echo exiting program
   ')
0:POSIX EXIT trap can have nested native mode EXIT trap
>entering program
>entering native zsh function
>native zsh function-local exit trap triggered
>exiting program
>POSIX exit trap triggered

   (cd ..; $ZTST_exe -fc '
     echo entering program
     emulate sh -c '\''spt() { trap "echo POSIX exit trap triggered" EXIT; }'\''
     fn() {
	trap "echo native zsh function-local exit trap triggered" EXIT
	echo entering native zsh function
     }
     spt
     fn
     echo exiting program
   ')
0:POSIX EXIT trap not replaced if defined within function
>entering program
>entering native zsh function
>native zsh function-local exit trap triggered
>exiting program
>POSIX exit trap triggered

    (set -e
    printf "a\nb\n" | while read line
    do
       [[ $line = a* ]] || continue
       ((ctr++))
       [[ $line = foo ]]
    done
    echo "ctr = $ctr"
   )
1:ERREXIT in loop with simple commands

  (set -e
  f()
  {
    false && false
  }
  if false; then
    :
  else
    # ERR_EXIT should trigger on return from function, not in function.
    f
    echo Fail 1
    echo Fail 2
    f
    echo Fail 3
  fi)
1:ERREXIT with false from inside && within function

  (set -e
  f()
  {
  }
  if false; then
    :
  else
    f
    echo Succeed 1
    echo Succeed 2
    f
    echo Succeed 3
  fi)
0:ERREXIT not triggered on empty function after false in if.
>Succeed 1
>Succeed 2
>Succeed 3

  (set -e
   if false; then
   else
       a=$(false)
       print This should not appear
   fi
  )
1:ERREXIT is triggered in an else block after a cmd subst returning false

  fn() {
    emulate -L zsh
    setopt errreturn
    if false; then
      false
      print No.
    else
      print Oh, yes
    fi
  }
  fn
0:ERR_RETURN not triggered in if condition
>Oh, yes

  fn() {
    emulate -L zsh
    setopt errreturn
    if true; then
      false
      print No.
    else
      print No, no.
    fi
  }
  fn
1:ERR_RETURN in "if"

  fn() {
    emulate -L zsh
    setopt errreturn
    if false; then
      print No.
    else
      false
      print No, no.
    fi
  }
  fn
1:ERR_RETURN in "else" branch (regression test)

  $ZTST_testdir/../Src/zsh -f =(<<<"
  if false; then
    :
  else
    if [[ -n '' ]]; then
        a=2  
    fi
    print Yes
  fi
  ")
0:ERR_RETURN when false "if" is the first statement in an "else" (regression)
>Yes
F:Must be tested with a top-level script rather than source or function

  fn() {
      emulate -L zsh
      setopt errreturn
      print before
      false
      print after
  }
  fn
1:ERR_RETURN, basic case
>before

  fn() {
      emulate -L zsh
      setopt errreturn
      print before
      ! true
      ! false
      print after
  }
  fn
0:ERR_RETURN with "!"
>before
>after

  fn() {
      emulate -L zsh
      setopt errreturn
      print before
      ! true
      ! false
      false
      print after
  }
  fn
1:ERR_RETURN with "!" and a following false
>before

  fn() {
      emulate -L zsh
      setopt errreturn
      print before
      ! if true; then
        false
      fi
      print after
  }
  fn
0:ERR_RETURN with "!" suppressed inside complex structure
>before
>after

  fn() {
      emulate -L zsh
      setopt errreturn
      print before
      if true; then
        false
      fi
      print after
  }
  fn
1:ERR_RETURN with no "!" suppression (control case)
>before

  (setopt err_return
    fn() {
      print before-in
      false && false
    }
    print before-out
    fn
    print after-out
  )
1:ERR_RETURN with "&&" in function (regression test)
>before-out
>before-in

  (setopt err_return
    fn() {
      print before-in
      false && false
      print after-in
    }
    print before-out
    fn
    print after-out
  )
0:ERR_RETURN not triggered on LHS of "&&" in function
>before-out
>before-in
>after-in
>after-out

  (setopt err_return
    fn() {
      print before-in
      true && false
      print after-in
    }
    print before-out
    fn
    print after-out
  )
1:ERR_RETURN triggered on RHS of "&&" in function
>before-out
>before-in

  mkdir -p zdotdir
  print >zdotdir/.zshenv '
  setopt norcs errreturn
  fn() {
    if false; then
      print Bad
    else
      print Good
    fi
    print Better
  }
  fn
  print In .zshenv'
  ZDOTDIR=$PWD/zdotdir $ZTST_testdir/../Src/zsh -c 'true'
0:ERR_RETURN within initialisation code with special flags
>Good
>Better
>In .zshenv

  unsetopt errreturn
  fn2() {
    if true; then
      false
    fi
  }
  fn1() {
    setopt localoptions errreturn
    fn2
    print $?
  }
  fn1
  print fn1 done
0:ERR_RETURN caused by function returning false from within shell construct
>fn1 done

  fn2() {
    if false; then
      print Bad
    else
      print Good
    fi
  }
  fn() {
    setopt err_return
    fn2 || true
  }
  fn
0:ERR_RETURN in "else" branch in nested function
>Good

  (setopt err_exit
  for x in y; do
    false && true
  done
  print OK
  )
0:ERR_EXIT not triggered by status 1 at end of for
>OK

  (setopt err_exit
  integer x=0
  while (( ! x++ )); do
    false && true
  done
  print OK
  )
0:ERR_EXIT not triggered by status 1 at end of while
>OK

  (setopt err_exit
  repeat 1; do
    false && true
  done
  print OK
  )
0:ERR_EXIT not triggered by status 1 at end of repeat
>OK

  (setopt err_exit
  if true; then
    false && true
  fi
  print OK
  )
0:ERR_EXIT not triggered by status 1 at end of if
>OK

  (setopt err_exit
  {
    false && true
  }
  print OK
  )
0:ERR_EXIT not triggered by status 1 at end of { }
>OK

  unsetopt err_exit err_return
  (setopt err_exit
  for x in y; do
    false
  done
  print OK
  )
1:ERR_EXIT triggered by status 1 within for

  (setopt err_exit
  integer x=0
  while (( ! x++ )); do
    false
  done
  print OK
  )
1:ERR_EXIT triggered by status 1 within while

  (setopt err_exit
  repeat 1; do
    false
  done
  print OK
  )
1:ERR_EXIT triggered by status 1 within repeat

  (setopt err_exit
  if true; then
    false
  fi
  print OK
  )
1:ERR_EXIT triggered by status 1 within if

  (setopt err_exit
  {
    false
  }
  print OK
  )
1:ERR_EXIT triggered by status 1 within { }

  (setopt err_exit
  () {
     false && true
     print Still functioning
     false && true
  }
  print OK
  )
1:ERR_EXIT triggered by status 1 at end of anon func
>Still functioning

  if zmodload zsh/system 2>/dev/null; then
  (
    trap 'echo TERM; exit 2' TERM
    trap 'echo EXIT' EXIT
    kill -s TERM "$sysparams[pid]"
    echo 'FATAL: we should never get here!' 1>&2
    exit 1
  )
  else
    ZTST_skip="zsh/system library not found."
  fi
2:EXIT trap from TERM trap
>TERM
>EXIT

  # Should not get "hello" in the single quotes.
  (
    trap "echo hello" EXIT;
    { :; } | { read line; print "'$line'"; }
  )
0:EXIT trap not called in LHS of pipeline: Shell construct on LHS
>''
>hello

  (
    trap "echo hello" EXIT;
    cat </dev/null | { read line; print "'$line'"; }
  )
0:EXIT trap not called in LHS of pipeline: External command on LHS
>''
>hello

  $ZTST_testdir/../Src/zsh -f =(<<<"
    trap handler EXIT
    handler() {
      echoa
      echo b
    }
    echoa() {
      echo a
    }
    exit0() {
      exit
    }
    main() {
      exit0
    }
    main
  ")
0:No early exit from nested function in EXIT trap.
>a
>b

  $ZTST_testdir/../Src/zsh -fc 'fn() { exit 13; }; trap fn EXIT; exit'
13:Explicit exit in exit trap overrides status

  $ZTST_testdir/../Src/zsh -fc 'fn() { exit $?+8; }; trap fn EXIT; exit 7'
15:Progated exit status through exit trap

  $ZTST_testdir/../Src/zsh -fc 'fn() { exit 13; }; trap fn EXIT'
13:Explicit exit in exit trap overrides implicit exit status

  $ZTST_testdir/../Src/zsh -fc 'fn() { exit 0; }; trap fn EXIT; false'
0:Explicit exit status 0 in exit trap overrides implicit non-zero status

  $ZTST_testdir/../Src/zsh -f <<<'fn() { exit 13; }; trap fn EXIT; false'
13:Exit status from exit trap, script-like path

  $ZTST_testdir/../Src/zsh -f <<<'fn() { exit 0; }; trap fn EXIT; false'
0:Explicit exit status overrides implicit: script-like code path

 $ZTST_testdir/../Src/zsh -f <<<$'
 trap \'echo $1; exit; echo $2\' USR1
 fn() {
         echo fn1
         kill -s USR1 $$
         echo fn2
 }
 echo out1
 fn trap1 trap2
 echo out2
 '
-:'exit' in trap causes calling function to return
>out1
>fn1
>trap1
# As of 5.7.1-test-2, the output was "out1 fn1 trap1 fn2" (on separate lines).

%clean

  rm -f TRAPEXIT

debug log:

solving 8d1283552 ...
found 8d1283552 in https://git.vuxu.org/mirror/zsh/

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