# Commands covered:  exec

 #

 # This file contains a collection of tests for one or more of the Tcl

 # built-in commands.  Sourcing this file into Tcl runs the tests and

 # generates output for errors.  No output means no errors were found.

 #

 # Copyright (c) 1991-1994 The Regents of the University of California.

 # Copyright (c) 1994-1997 Sun Microsystems, Inc.

 # Copyright (c) 1998-1999 by Scriptics Corporation.

 #

 # See the file "license.terms" for information on usage and redistribution

 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 #

 # RCS: @(#) $Id: exec.test,v 1.16.2.7 2006/01/16 19:31:19 rmax Exp $

 package require tcltest 2

 namespace import -force ::tcltest::*

 # All tests require the "exec" command.

 # Skip them if exec is not defined.

 testConstraint exec [llength [info commands exec]]

 unset -nocomplain path

 set path(echo) [makeFile {

     puts -nonewline [lindex $argv 0]

     foreach str [lrange $argv 1 end] {

 	puts -nonewline " $str"

     }

     puts {}

     exit

 } echo]

 set path(cat) [makeFile {

     if {$argv == {}} {

 	set argv -

     }

     foreach name $argv {

 	if {$name == "-"} {

 	    set f stdin

 	} elseif {[catch {open $name r} f] != 0} {

 	    puts stderr $f

 	    continue

 	}

 	while {[eof $f] == 0} {

 	    puts -nonewline [read $f]

 	}

 	if {$f != "stdin"} {

 	    close $f

 	}

     }

     exit

 } cat]

 set path(wc) [makeFile {

     set data [read stdin]

     set lines [regsub -all "\n" $data {} dummy]

     set words [regsub -all "\[^ \t\n]+" $data {} dummy]

     set chars [string length $data]

     puts [format "%8.d%8.d%8.d" $lines $words $chars]

     exit

 } wc]

 set path(sh) [makeFile {

     if {[lindex $argv 0] != "-c"} {

 	error "sh: unexpected arguments $argv"

     }

     set cmd [lindex $argv 1]

     lappend cmd ";"

     set newcmd {}

     foreach arg $cmd {

 	if {$arg == ";"} {

 	    eval exec >@stdout 2>@stderr [list [info nameofexecutable]] $newcmd

 	    set newcmd {}

 	    continue

 	}

 	if {$arg == "1>&2"} {

 	    set arg >@stderr

 	}

 	lappend newcmd $arg

     }

     exit

 } sh]

 set path(sleep) [makeFile {

     after [expr $argv*1000]

     exit

 } sleep]

 set path(exit) [makeFile {

     exit $argv

 } exit]

 # Basic operations.

 test exec-1.1 {basic exec operation} {exec} {

     exec [interpreter] $path(echo) a b c

 } "a b c"

 test exec-1.2 {pipelining} {exec stdio} {

     exec [interpreter] $path(echo) a b c d | [interpreter] $path(cat) | [interpreter] $path(cat)

 } "a b c d"

 test exec-1.3 {pipelining} {exec stdio} {

     set a [exec [interpreter] $path(echo) a b c d | [interpreter] $path(cat) | [interpreter] $path(wc)]

     list [scan $a "%d %d %d" b c d] $b $c

 } {3 1 4}

 set arg {12345678901234567890123456789012345678901234567890}

 set arg "$arg$arg$arg$arg$arg$arg"

 test exec-1.4 {long command lines} {exec} {

     exec [interpreter] $path(echo) $arg

 } $arg

 set arg {}

 # I/O redirection: input from Tcl command.

 test exec-2.1 {redirecting input from immediate source} {exec stdio} {

     exec [interpreter] $path(cat) << "Sample text"

 } {Sample text}

 test exec-2.2 {redirecting input from immediate source} {exec stdio} {

     exec << "Sample text" [interpreter] $path(cat) | [interpreter] $path(cat)

 } {Sample text}

 test exec-2.3 {redirecting input from immediate source} {exec stdio} {

     exec [interpreter] $path(cat) << "Sample text" | [interpreter] $path(cat)

 } {Sample text}

 test exec-2.4 {redirecting input from immediate source} {exec stdio} {

     exec [interpreter] $path(cat) | [interpreter] $path(cat) << "Sample text"

 } {Sample text}

 test exec-2.5 {redirecting input from immediate source} {exec} {

     exec [interpreter] $path(cat) "<<Joined to arrows"

 } {Joined to arrows}

 test exec-2.6 {redirecting input from immediate source, with UTF} {exec} {

     # If this fails, it may give back:

     # "\uC3\uA9\uC3\uA0\uC3\uBC\uC3\uB1"

     # If it does, this means that the UTF -> external conversion did not 

     # occur before writing out the temp file.

     exec [interpreter] $path(cat) << "\uE9\uE0\uFC\uF1"

 } "\uE9\uE0\uFC\uF1"

 # I/O redirection: output to file.

 set path(gorp.file) [makeFile {} gorp.file]

 file delete $path(gorp.file)

 test exec-3.1 {redirecting output to file} {exec} {

     exec [interpreter] $path(echo) "Some simple words" > $path(gorp.file)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "Some simple words"

 test exec-3.2 {redirecting output to file} {exec stdio} {

     exec [interpreter] $path(echo) "More simple words" | >$path(gorp.file) [interpreter] $path(cat) | [interpreter] $path(cat)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "More simple words"

 test exec-3.3 {redirecting output to file} {exec stdio} {

     exec > $path(gorp.file) [interpreter] $path(echo) "Different simple words" | [interpreter] $path(cat) | [interpreter] $path(cat)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "Different simple words"

 test exec-3.4 {redirecting output to file} {exec} {

     exec [interpreter] $path(echo) "Some simple words" >$path(gorp.file)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "Some simple words"

 test exec-3.5 {redirecting output to file} {exec} {

     exec [interpreter] $path(echo) "First line" >$path(gorp.file)

     exec [interpreter] $path(echo) "Second line" >> $path(gorp.file)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "First line\nSecond line"

 test exec-3.6 {redirecting output to file} {exec} {

     exec [interpreter] $path(echo) "First line" >$path(gorp.file)

     exec [interpreter] $path(echo) "Second line" >>$path(gorp.file)

     exec [interpreter] $path(cat) $path(gorp.file)

 } "First line\nSecond line"

 test exec-3.7 {redirecting output to file} {exec} {

     set f [open $path(gorp.file) w]

     puts $f "Line 1"

     flush $f

     exec [interpreter] $path(echo) "More text" >@ $f

     exec [interpreter] $path(echo) >@$f "Even more"

     puts $f "Line 3"

     close $f

     exec [interpreter] $path(cat) $path(gorp.file)

 } "Line 1\nMore text\nEven more\nLine 3"

 # I/O redirection: output and stderr to file.

 file delete $path(gorp.file)

 test exec-4.1 {redirecting output and stderr to file} {exec} {

     exec [interpreter] "$path(echo)" "test output" >& $path(gorp.file)

     exec [interpreter] "$path(cat)" "$path(gorp.file)"

 } "test output"

 test exec-4.2 {redirecting output and stderr to file} {exec} {

     list [exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" >&$path(gorp.file)] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file)"]

 } {{} {foo bar}}

 test exec-4.3 {redirecting output and stderr to file} {exec} {

     exec [interpreter] $path(echo) "first line" > $path(gorp.file)

     list [exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" >>&$path(gorp.file)] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file)"]

 } "{} {first line\nfoo bar}"

 test exec-4.4 {redirecting output and stderr to file} {exec} {

     set f [open "$path(gorp.file)" w]

     puts $f "Line 1"

     flush $f

     exec [interpreter] "$path(echo)" "More text" >&@ $f

     exec [interpreter] "$path(echo)" >&@$f "Even more"

     puts $f "Line 3"

     close $f

     exec [interpreter] "$path(cat)" "$path(gorp.file)"

 } "Line 1\nMore text\nEven more\nLine 3"

 test exec-4.5 {redirecting output and stderr to file} {exec} {

     set f [open "$path(gorp.file)" w]

     puts $f "Line 1"

     flush $f

     exec >&@ $f [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2"

     exec >&@$f [interpreter] "$path(sh)" -c "\"$path(echo)\" xyzzy 1>&2"

     puts $f "Line 3"

     close $f

     exec [interpreter] "$path(cat)" "$path(gorp.file)"

 } "Line 1\nfoo bar\nxyzzy\nLine 3"

 # I/O redirection: input from file.

 if { [set ::tcltest::testConstraints(exec)] } {

 exec [interpreter] $path(echo) "Just a few thoughts" > $path(gorp.file)

 }

 test exec-5.1 {redirecting input from file} {exec} {

     exec [interpreter] $path(cat) < $path(gorp.file)

 } {Just a few thoughts}

 test exec-5.2 {redirecting input from file} {exec stdio} {

     exec [interpreter] $path(cat) | [interpreter] $path(cat) < $path(gorp.file)

 } {Just a few thoughts}

 test exec-5.3 {redirecting input from file} {exec stdio} {

     exec [interpreter] $path(cat) < $path(gorp.file) | [interpreter] $path(cat)

 } {Just a few thoughts}

 test exec-5.4 {redirecting input from file} {exec stdio} {

     exec < $path(gorp.file) [interpreter] $path(cat) | [interpreter] $path(cat)

 } {Just a few thoughts}

 test exec-5.5 {redirecting input from file} {exec} {

     exec [interpreter] $path(cat) <$path(gorp.file)

 } {Just a few thoughts}

 test exec-5.6 {redirecting input from file} {exec} {

     set f [open $path(gorp.file) r]

     set result [exec [interpreter] $path(cat) <@ $f]

     close $f

     set result

 } {Just a few thoughts}

 test exec-5.7 {redirecting input from file} {exec} {

     set f [open $path(gorp.file) r]

     set result [exec <@$f [interpreter] $path(cat)]

     close $f

     set result

 } {Just a few thoughts}

 # I/O redirection: standard error through a pipeline.

 test exec-6.1 {redirecting stderr through a pipeline} {exec stdio} {

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar" |& [interpreter] "$path(cat)"

 } "foo bar"

 test exec-6.2 {redirecting stderr through a pipeline} {exec stdio} {

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" |& [interpreter] "$path(cat)"

 } "foo bar"

 test exec-6.3 {redirecting stderr through a pipeline} {exec stdio} {

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" \

 	|& [interpreter] "$path(sh)" -c "\"$path(echo)\" second msg 1>&2 ; \"$path(cat)\"" |& [interpreter] "$path(cat)"

 } "second msg\nfoo bar"

 # I/O redirection: combinations.

 set path(gorp.file2) [makeFile {} gorp.file2]

 file delete $path(gorp.file2)

 test exec-7.1 {multiple I/O redirections} {exec} {

     exec << "command input" > $path(gorp.file2) [interpreter] $path(cat) < $path(gorp.file)

     exec [interpreter] $path(cat) $path(gorp.file2)

 } {Just a few thoughts}

 test exec-7.2 {multiple I/O redirections} {exec} {

     exec < $path(gorp.file) << "command input" [interpreter] $path(cat)

 } {command input}

 # Long input to command and output from command.

 set a "0123456789 xxxxxxxxx abcdefghi ABCDEFGHIJK\n"

 set a [concat $a $a $a $a]

 set a [concat $a $a $a $a]

 set a [concat $a $a $a $a]

 set a [concat $a $a $a $a]

 test exec-8.1 {long input and output} {exec} {

     exec [interpreter] $path(cat) << $a

 } $a

 # More than 20 arguments to exec.

 test exec-8.2 {long input and output} {exec} {

     exec [interpreter] $path(echo) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

 } {1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23}

 # Commands that return errors.

 test exec-9.1 {commands returning errors} {exec} {

     set x [catch {exec gorp456} msg]

     list $x [string tolower $msg] [string tolower $errorCode]

 } {1 {couldn't execute "gorp456": no such file or directory} {posix enoent {no such file or directory}}}

 test exec-9.2 {commands returning errors} {exec} {

     string tolower [list [catch {exec [interpreter] echo foo | foo123} msg] $msg $errorCode]

 } {1 {couldn't execute "foo123": no such file or directory} {posix enoent {no such file or directory}}}

 test exec-9.3 {commands returning errors} {exec stdio} {

     list [catch {exec [interpreter] $path(sleep) 1 | [interpreter] $path(exit) 43 | [interpreter] $path(sleep) 1} msg] $msg

 } {1 {child process exited abnormally}}

 test exec-9.4 {commands returning errors} {exec stdio} {

     list [catch {exec [interpreter] $path(exit) 43 | [interpreter] $path(echo) "foo bar"} msg] $msg

 } {1 {foo bar

 child process exited abnormally}}

 test exec-9.5 {commands returning errors} {exec stdio} {

     list [catch {exec gorp456 | [interpreter] echo a b c} msg] [string tolower $msg]

 } {1 {couldn't execute "gorp456": no such file or directory}}

 test exec-9.6 {commands returning errors} {exec} {

     list [catch {exec [interpreter] "$path(sh)" -c "\"$path(echo)\" error msg 1>&2"} msg] $msg

 } {1 {error msg}}

 test exec-9.7 {commands returning errors} {exec stdio} {

     list [catch {exec [interpreter] "$path(sh)" -c "\"$path(echo)\" error msg 1>&2" \

 		     | [interpreter] "$path(sh)" -c "\"$path(echo)\" error msg 1>&2"} msg] $msg

 } {1 {error msg

 error msg}}

 set path(err) [makeFile {} err]

 test exec-9.8 {commands returning errors} {exec} {

     set f [open $path(err) w]

     puts $f {

 	puts stdout out

 	puts stderr err

     }

     close $f

     list [catch {exec [interpreter] $path(err)} msg] $msg

 } {1 {out

 err}}

 # Errors in executing the Tcl command, as opposed to errors in the

 # processes that are invoked.

 test exec-10.1 {errors in exec invocation} {exec} {

     list [catch {exec} msg] $msg

 } {1 {wrong # args: should be "exec ?switches? arg ?arg ...?"}}

 test exec-10.2 {errors in exec invocation} {exec} {

     list [catch {exec | cat} msg] $msg

 } {1 {illegal use of | or |& in command}}

 test exec-10.3 {errors in exec invocation} {exec} {

     list [catch {exec cat |} msg] $msg

 } {1 {illegal use of | or |& in command}}

 test exec-10.4 {errors in exec invocation} {exec} {

     list [catch {exec cat | | cat} msg] $msg

 } {1 {illegal use of | or |& in command}}

 test exec-10.5 {errors in exec invocation} {exec} {

     list [catch {exec cat | |& cat} msg] $msg

 } {1 {illegal use of | or |& in command}}

 test exec-10.6 {errors in exec invocation} {exec} {

     list [catch {exec cat |&} msg] $msg

 } {1 {illegal use of | or |& in command}}

 test exec-10.7 {errors in exec invocation} {exec} {

     list [catch {exec cat <} msg] $msg

 } {1 {can't specify "<" as last word in command}}

 test exec-10.8 {errors in exec invocation} {exec} {

     list [catch {exec cat >} msg] $msg

 } {1 {can't specify ">" as last word in command}}

 test exec-10.9 {errors in exec invocation} {exec} {

     list [catch {exec cat <<} msg] $msg

 } {1 {can't specify "<<" as last word in command}}

 test exec-10.10 {errors in exec invocation} {exec} {

     list [catch {exec cat >>} msg] $msg

 } {1 {can't specify ">>" as last word in command}}

 test exec-10.11 {errors in exec invocation} {exec} {

     list [catch {exec cat >&} msg] $msg

 } {1 {can't specify ">&" as last word in command}}

 test exec-10.12 {errors in exec invocation} {exec} {

     list [catch {exec cat >>&} msg] $msg

 } {1 {can't specify ">>&" as last word in command}}

 test exec-10.13 {errors in exec invocation} {exec} {

     list [catch {exec cat >@} msg] $msg

 } {1 {can't specify ">@" as last word in command}}

 test exec-10.14 {errors in exec invocation} {exec} {

     list [catch {exec cat <@} msg] $msg

 } {1 {can't specify "<@" as last word in command}}

 test exec-10.15 {errors in exec invocation} {exec} {

     list [catch {exec cat < a/b/c} msg] [string tolower $msg]

 } {1 {couldn't read file "a/b/c": no such file or directory}}

 test exec-10.16 {errors in exec invocation} {exec} {

     list [catch {exec cat << foo > a/b/c} msg] [string tolower $msg]

 } {1 {couldn't write file "a/b/c": no such file or directory}}

 test exec-10.17 {errors in exec invocation} {exec} {

     list [catch {exec cat << foo > a/b/c} msg] [string tolower $msg]

 } {1 {couldn't write file "a/b/c": no such file or directory}}

 set f [open $path(gorp.file) w]

 test exec-10.18 {errors in exec invocation} {exec} {

     list [catch {exec cat <@ $f} msg] $msg

 } "1 {channel \"$f\" wasn't opened for reading}"

 close $f

 set f [open $path(gorp.file) r]

 test exec-10.19 {errors in exec invocation} {exec} {

     list [catch {exec cat >@ $f} msg] $msg

 } "1 {channel \"$f\" wasn't opened for writing}"

 close $f

 test exec-10.20 {errors in exec invocation} {exec} {

     list [catch {exec ~non_existent_user/foo/bar} msg] $msg

 } {1 {user "non_existent_user" doesn't exist}}

 test exec-10.21 {errors in exec invocation} {exec} {

     list [catch {exec [interpreter] true | ~xyzzy_bad_user/x | false} msg] $msg

 } {1 {user "xyzzy_bad_user" doesn't exist}}

 test exec-10.22 {errors in exec invocation} \

 -constraints exec \

 -returnCodes 1 \

 -body {exec echo test > ~non_existent_user/foo/bar} \

 -result {user "non_existent_user" doesn't exist}

 # Commands in background.

 test exec-11.1 {commands in background} {exec} {

     set x [lindex [time {exec [interpreter] $path(sleep) 2 &}] 0]

     expr $x<1000000

 } 1

 test exec-11.2 {commands in background} {exec} {

     list [catch {exec [interpreter] $path(echo) a &b} msg] $msg

 } {0 {a &b}}

 test exec-11.3 {commands in background} {exec} {

     llength [exec [interpreter] $path(sleep) 1 &]

 } 1

 test exec-11.4 {commands in background} {exec stdio} {

     llength [exec [interpreter] $path(sleep) 1 | [interpreter] $path(sleep) 1 | [interpreter] $path(sleep) 1 &]

 } 3

 test exec-11.5 {commands in background} {exec} {

     set f [open $path(gorp.file) w]

     puts $f [list catch [list exec [info nameofexecutable] $path(echo) foo &]]

     close $f

     string compare "foo" [exec [interpreter] $path(gorp.file)]

 } 0

 # Make sure that background commands are properly reaped when

 # they eventually die.

 if { [set ::tcltest::testConstraints(exec)] } {

 exec [interpreter] $path(sleep) 3

 }

 test exec-12.1 {reaping background processes} \

 	{exec unixOnly nonPortable} {

     for {set i 0} {$i < 20} {incr i} {

 	exec echo foo > /dev/null &

     }

     exec sleep 1

     catch {exec ps | fgrep "echo foo" | fgrep -v fgrep | wc} msg

     lindex $msg 0

 } 0

 test exec-12.2 {reaping background processes} \

 	{exec unixOnly nonPortable} {

     exec sleep 2 | sleep 2 | sleep 2 &

     catch {exec ps | fgrep -i "sleep" | fgrep -i -v fgrep | wc} msg

     set x [lindex $msg 0]

     exec sleep 3

     catch {exec ps | fgrep -i "sleep" | fgrep -i -v fgrep | wc} msg

     list $x [lindex $msg 0]

 } {3 0}

 test exec-12.3 {reaping background processes} \

 	{exec unixOnly nonPortable} {

     exec sleep 1000 &

     exec sleep 1000 &

     set x [exec ps | fgrep "sleep" | fgrep -v fgrep]

     set pids {}

     foreach i [split $x \n] {

 	lappend pids [lindex $i 0]

     }

     foreach i $pids {

 	catch {exec kill -STOP $i}

     }

     catch {exec ps | fgrep "sleep" | fgrep -v fgrep | wc} msg

     set x [lindex $msg 0]

     foreach i $pids {

 	catch {exec kill -KILL $i}

     }

     catch {exec ps | fgrep "sleep" | fgrep -v fgrep | wc} msg

     list $x [lindex $msg 0]

 } {2 0}

 # Make sure "errorCode" is set correctly.

 test exec-13.1 {setting errorCode variable} {exec} {

     list [catch {exec [interpreter] $path(cat) < a/b/c} msg] [string tolower $errorCode]

 } {1 {posix enoent {no such file or directory}}}

 test exec-13.2 {setting errorCode variable} {exec} {

     list [catch {exec [interpreter] $path(cat) > a/b/c} msg] [string tolower $errorCode]

 } {1 {posix enoent {no such file or directory}}}

 test exec-13.3 {setting errorCode variable} {exec} {

     set x [catch {exec _weird_cmd_} msg]

     list $x [string tolower $msg] [lindex $errorCode 0] \

 	    [string tolower [lrange $errorCode 2 end]]

 } {1 {couldn't execute "_weird_cmd_": no such file or directory} POSIX {{no such file or directory}}}

 test exec-13.4 {extended exit result codes} {

     -constraints {win}

     -setup {

         set tmp [makeFile {exit 0x00000101} tmpfile.exec-13.4]

     }

     -body {

         list [catch {exec [interpreter] $tmp} err]\

             [lreplace $::errorCode 1 1 {}]

     }

     -cleanup {

         removeFile $tmp

     }

     -result {1 {CHILDSTATUS {} 257}}

 }

 test exec-13.5 {extended exit result codes: max value} {

     -constraints {win}

     -setup {

         set tmp [makeFile {exit 0x3fffffff} tmpfile.exec-13.5]

     }

     -body {

         list [catch {exec [interpreter] $tmp} err]\

             [lreplace $::errorCode 1 1 {}]

     }

     -cleanup {

         removeFile $tmp

     }

     -result {1 {CHILDSTATUS {} 1073741823}}

 }

 test exec-13.6 {extended exit result codes: signalled} {   

     -constraints {win}

     -setup {

         set tmp [makeFile {exit 0xffffffff} tmpfile.exec-13.6]

     }

     -body {

         list [catch {exec [interpreter] $tmp} err]\

             [lreplace $::errorCode 1 1 {}]

     }

     -cleanup {

         removeFile $tmp

     }

     -result {1 {CHILDKILLED {} SIGABRT SIGABRT}}

 }

 # Switches before the first argument

 test exec-14.1 {-keepnewline switch} {exec} {

     exec -keepnewline [interpreter] $path(echo) foo

 } "foo\n"

 test exec-14.2 {-keepnewline switch} {exec} {

     list [catch {exec -keepnewline} msg] $msg

 } {1 {wrong # args: should be "exec ?switches? arg ?arg ...?"}}

 test exec-14.3 {unknown switch} {exec} {

     list [catch {exec -gorp} msg] $msg

 } {1 {bad switch "-gorp": must be -keepnewline or --}}

 test exec-14.4 {-- switch} {exec} {

     list [catch {exec -- -gorp} msg] [string tolower $msg]

 } {1 {couldn't execute "-gorp": no such file or directory}}

 # Redirecting standard error separately from standard output

 test exec-15.1 {standard error redirection} {exec} {

     exec [interpreter] "$path(echo)" "First line" > "$path(gorp.file)"

     list [exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" 2> "$path(gorp.file)"] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file)"]

 } {{} {foo bar}}

 test exec-15.2 {standard error redirection} {exec stdio} {

     list [exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" \

 		| [interpreter] "$path(echo)" biz baz >$path(gorp.file) 2> "$path(gorp.file2)"] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file)"] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file2)"]

 } {{} {biz baz} {foo bar}}

 test exec-15.3 {standard error redirection} {exec stdio} {

     list [exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" \

 	        | [interpreter] "$path(echo)" biz baz 2>$path(gorp.file) > "$path(gorp.file2)"] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file)"] \

 	    [exec [interpreter] "$path(cat)" "$path(gorp.file2)"]

 } {{} {foo bar} {biz baz}}

 test exec-15.4 {standard error redirection} {exec} {

     set f [open "$path(gorp.file)" w]

     puts $f "Line 1"

     flush $f

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" 2>@ $f

     puts $f "Line 3"

     close $f

     exec [interpreter] "$path(cat)" "$path(gorp.file)"

 } {Line 1

 foo bar

 Line 3}

 test exec-15.5 {standard error redirection} {exec} {

     exec [interpreter] "$path(echo)" "First line" > "$path(gorp.file)"

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" 2>> "$path(gorp.file)"

     exec [interpreter] "$path(cat)" "$path(gorp.file)"

 } {First line

 foo bar}

 test exec-15.6 {standard error redirection} {exec stdio} {

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" > "$path(gorp.file2)" 2> "$path(gorp.file)" \

 	    >& "$path(gorp.file)" 2> "$path(gorp.file2)" | [interpreter] "$path(echo)" biz baz

     list [exec [interpreter] "$path(cat)" "$path(gorp.file)"] [exec [interpreter] "$path(cat)" "$path(gorp.file2)"]

 } {{biz baz} {foo bar}}

 test exec-15.7 {standard error redirection 2>@1} {exec stdio} {

     # This redirects stderr output into normal result output from exec

     exec [interpreter] "$path(sh)" -c "\"$path(echo)\" foo bar 1>&2" 2>@1

 } {foo bar}

 test exec-16.1 {flush output before exec} {exec} {

     set f [open $path(gorp.file) w]

     puts $f "First line"

     exec [interpreter] $path(echo) "Second line" >@ $f

     puts $f "Third line"

     close $f

     exec [interpreter] $path(cat) $path(gorp.file)

 } {First line

 Second line

 Third line}

 test exec-16.2 {flush output before exec} {exec} {

     set f [open $path(gorp.file) w]

     puts $f "First line"

     exec [interpreter] << {puts stderr {Second line}} >&@ $f > $path(gorp.file2)

     puts $f "Third line"

     close $f

     exec [interpreter] $path(cat) $path(gorp.file)

 } {First line

 Second line

 Third line}

 set path(script) [makeFile {} script]

 test exec-17.1 { inheriting standard I/O } {exec} {

     set f [open $path(script) w]

     puts -nonewline $f {close stdout

 	set f [}

     puts $f [list open $path(gorp.file) w]]

     puts $f [list catch \

 	    [list exec [info nameofexecutable] $path(echo) foobar &]]

     puts $f [list exec [info nameofexecutable] $path(sleep) 2]

     puts $f {close $f}

     close $f

     catch {exec [interpreter] $path(script)} result

     set f [open $path(gorp.file) r]

     lappend result [read $f]

     close $f

     set result

 } {{foobar

 }}

 test exec-18.1 { exec cat deals with weird file names} {exec tempNotWin} {

     # This is cross-platform, but the cat isn't predictably correct on

     # Windows.

     set f "foo\[\{blah"

     set path(fooblah) [makeFile {} $f]

     set fout [open $path(fooblah) w]

     puts $fout "contents"

     close $fout

     set res [list [catch {exec cat $path(fooblah)} msg] $msg]

     removeFile $f

     set res

 } {0 contents}

 # Note that this test cannot be adapted to work on Windows; that platform has

 # no kernel support for an analog of O_APPEND.

 test exec-19.1 {exec >> uses O_APPEND} {

     -constraints {exec unix}

     -setup {

 	set tmpfile [makeFile {0} tmpfile.exec-19.1]

     }

     -body {

 	# Note that we have to allow for the current contents of the

 	# temporary file, which is why the result is 14 and not 12

 	exec /bin/sh -c \

 	    {for a in 1 2 3; do sleep 1; echo $a; done} >>$tmpfile &

 	exec /bin/sh -c \

 	    {for a in a b c; do sleep 1; echo $a; done} >>$tmpfile &

 	# The above two shell invokations take about 3 seconds to

 	# finish, so allow 5s (in case the machine is busy)

 	after 5000

 	# Check that no bytes have got lost through mixups with

 	# overlapping appends, which is only guaranteed to work when

 	# we set O_APPEND on the file descriptor in the [exec >>...]

 	file size $tmpfile

     }

     -cleanup {

 	removeFile $tmpfile

     }

     -result 14

 }

 # cleanup

 foreach file {script gorp.file gorp.file2 echo cat wc sh sleep exit err} {

     removeFile $file

 }

 unset -nocomplain path

 ::tcltest::cleanupTests

 return