exec.test

linux系统下的音频通信

set a [concat $a $a $a $a]
test exec-8.1 {long input and output} {
    exec $tcltest cat << $a
} $a

# Commands that return errors.

test exec-9.1 {commands returning errors} {
    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} {
    string tolower [list [catch {exec $tcltest 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} {
    list [catch {exec $tcltest sleep 1 | $tcltest exit 43 | $tcltest sleep 1} msg] $msg
} {1 {child process exited abnormally}}
test exec-9.4 {commands returning errors} {
    list [catch {exec $tcltest exit 43 | $tcltest echo "foo bar"} msg] $msg
} {1 {foo bar
child process exited abnormally}}
test exec-9.5 {commands returning errors} {
    list [catch {exec gorp456 | $tcltest 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} {
    list [catch {exec $tcltest sh -c "echo error msg 1>&2"} msg] $msg
} {1 {error msg}}
test exec-9.7 {commands returning errors} {
    list [catch {exec $tcltest sh -c "echo error msg 1>&2" \
		     | $tcltest sh -c "echo error msg 1>&2"} msg] $msg
} {1 {error msg
error msg}}

# Errors in executing the Tcl command, as opposed to errors in the
# processes that are invoked.

test exec-10.1 {errors in exec invocation} {
    list [catch {exec} msg] $msg
} {1 {wrong # args: should be "exec ?switches? arg ?arg ...?"}}
test exec-10.2 {errors in exec invocation} {
    list [catch {exec | cat} msg] $msg
} {1 {illegal use of | or |& in command}}
test exec-10.3 {errors in exec invocation} {
    list [catch {exec cat |} msg] $msg
} {1 {illegal use of | or |& in command}}
test exec-10.4 {errors in exec invocation} {
    list [catch {exec cat | | cat} msg] $msg
} {1 {illegal use of | or |& in command}}
test exec-10.5 {errors in exec invocation} {
    list [catch {exec cat | |& cat} msg] $msg
} {1 {illegal use of | or |& in command}}
test exec-10.6 {errors in exec invocation} {
    list [catch {exec cat |&} msg] $msg
} {1 {illegal use of | or |& in command}}
test exec-10.7 {errors in exec invocation} {
    list [catch {exec cat <} msg] $msg
} {1 {can't specify "<" as last word in command}}
test exec-10.8 {errors in exec invocation} {
    list [catch {exec cat >} msg] $msg
} {1 {can't specify ">" as last word in command}}
test exec-10.9 {errors in exec invocation} {
    list [catch {exec cat <<} msg] $msg
} {1 {can't specify "<<" as last word in command}}
test exec-10.10 {errors in exec invocation} {
    list [catch {exec cat >>} msg] $msg
} {1 {can't specify ">>" as last word in command}}
test exec-10.11 {errors in exec invocation} {
    list [catch {exec cat >&} msg] $msg
} {1 {can't specify ">&" as last word in command}}
test exec-10.12 {errors in exec invocation} {
    list [catch {exec cat >>&} msg] $msg
} {1 {can't specify ">>&" as last word in command}}
test exec-10.13 {errors in exec invocation} {
    list [catch {exec cat >@} msg] $msg
} {1 {can't specify ">@" as last word in command}}
test exec-10.14 {errors in exec invocation} {
    list [catch {exec cat <@} msg] $msg
} {1 {can't specify "<@" as last word in command}}
test exec-10.15 {errors in exec invocation} {
    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} {
    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} {
    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 gorp.file w]
test exec-10.18 {errors in exec invocation} {
    list [catch {exec cat <@ $f} msg] $msg
} "1 {channel \"$f\" wasn't opened for reading}"
close $f
set f [open gorp.file r]
test exec-10.19 {errors in exec invocation} {
    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} {
    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} {
    list [catch {exec $tcltest 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} {
    set x [lindex [time {exec $tcltest sleep 2 &}] 0]
    expr $x<1000000
} 1
test exec-11.2 {commands in background} {
    list [catch {exec $tcltest echo a &b} msg] $msg
} {0 {a &b}}
test exec-11.3 {commands in background} {
    llength [exec $tcltest sleep 1 &]
} 1
test exec-11.4 {commands in background} {
    llength [exec $tcltest sleep 1 | $tcltest sleep 1 | $tcltest sleep 1 &]
} 3
test exec-11.5 {commands in background} {
    set f [open gorp.file w]
    puts $f { catch { exec [info nameofexecutable] echo foo & } }
    close $f
    string compare "foo" [exec $tcltest gorp.file]
} 0

# Make sure that background commands are properly reaped when
# they eventually die.

exec $tcltest sleep 3
test exec-12.1 {reaping background processes} {unixOnly nonPortable} {
    for {set i 0} {$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} {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} {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} {
    list [catch {exec $tcltest cat < a/b/c} msg] [string tolower $errorCode]
} {1 {posix enoent {no such file or directory}}}
test exec-13.2 {setting errorCode variable} {
    list [catch {exec $tcltest cat > a/b/c} msg] [string tolower $errorCode]
} {1 {posix enoent {no such file or directory}}}
test exec-13.3 {setting errorCode variable} {
    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 -keepnewline $tcltest echo foo
} "foo\n"
test exec-14.2 {-keepnewline switch} {
    list [catch {exec -keepnewline} msg] $msg
} {1 {wrong # args: should be "exec ?switches? arg ?arg ...?"}}
test exec-14.3 {unknown switch} {
    list [catch {exec -gorp} msg] $msg
} {1 {bad switch "-gorp": must be -keepnewline or --}}
test exec-14.4 {-- switch} {
    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 $tcltest echo "First line" > gorp.file
    list [exec $tcltest sh -c "echo foo bar 1>&2" 2> gorp.file] \
	    [exec $tcltest cat gorp.file]
} {{} {foo bar}}
test exec-15.2 {standard error redirection} {
    list [exec $tcltest sh -c "echo foo bar 1>&2" \
		| $tcltest echo biz baz >gorp.file 2> gorp.file2] \
	    [exec $tcltest cat gorp.file] \
	    [exec $tcltest cat gorp.file2]
} {{} {biz baz} {foo bar}}
test exec-15.3 {standard error redirection} {
    list [exec $tcltest sh -c "echo foo bar 1>&2" \
	        | $tcltest echo biz baz 2>gorp.file > gorp.file2] \
	    [exec $tcltest cat gorp.file] \
	    [exec $tcltest cat gorp.file2]
} {{} {foo bar} {biz baz}}
test exec-15.4 {standard error redirection} {
    set f [open gorp.file w]
    puts $f "Line 1"
    flush $f
    exec $tcltest sh -c "echo foo bar 1>&2" 2>@ $f
    puts $f "Line 3"
    close $f
    exec $tcltest cat gorp.file
} {Line 1
foo bar
Line 3}
test exec-15.5 {standard error redirection} {
    exec $tcltest echo "First line" > gorp.file
    exec $tcltest sh -c "echo foo bar 1>&2" 2>> gorp.file
    exec $tcltest cat gorp.file
} {First line
foo bar}
test exec-15.6 {standard error redirection} {
    exec $tcltest sh -c "echo foo bar 1>&2" > gorp.file2 2> gorp.file \
	    >& gorp.file 2> gorp.file2 | $tcltest echo biz baz
    list [exec $tcltest cat gorp.file] [exec $tcltest cat gorp.file2]
} {{biz baz} {foo bar}}

test exec-16.1 {flush output before exec} {
    set f [open gorp.file w]
    puts $f "First line"
    exec $tcltest echo "Second line" >@ $f
    puts $f "Third line"
    close $f
    exec $tcltest cat gorp.file
} {First line
Second line
Third line}
test exec-16.2 {flush output before exec} {} {
    set f [open gorp.file w]
    puts $f "First line"
    exec $tcltest << {puts stderr {Second line}} >&@ $f > gorp.file2
    puts $f "Third line"
    close $f
    exec $tcltest cat gorp.file
} {First line
Second line
Third line}

test exec-17.1 { inheriting standard I/O } {
    set f [open script w]
    puts $f {close stdout
	set f [open gorp.file w]
	catch {exec [info nameofexecutable] echo foobar &}
	exec [info nameofexecutable] sleep 2
	close $f
    }
    close $f
    catch {exec $tcltest script} result
    set f [open gorp.file r]
    lappend result [read $f]
    close $f
    set result
} {{foobar
}}

file delete script gorp.file gorp.file2
file delete echo cat wc sh sleep exit