# 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 1.23 2005/07/28 10:55:37 dkf 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 {[testConstraint 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}} # 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 {[testConstraint exec]} { exec [interpreter] $path(sleep) 3 } test exec-12.1 {reaping background processes} \ {exec unix nonPortable} { for {set i 0} {$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 unix 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 unix 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}}} # 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