exec.test

tcl是工具命令语言

# 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 2003/02/04 18:23:35 vincentdarley 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]]
catch {unset 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]
removeFile 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.

removeFile 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]
removeFile 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} {