archie/tcl7.3/tests/uplevel.test

# Commands covered:  uplevel
#
# 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) 1991-1993 The Regents of the University of California.
# All rights reserved.
#
# Permission is hereby granted, without written agreement and without
# license or royalty fees, to use, copy, modify, and distribute this
# software and its documentation for any purpose, provided that the
# above copyright notice and the following two paragraphs appear in
# all copies of this software.
#
# IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
# DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
# OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
# CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
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# $Header: /user6/ouster/tcl/tests/RCS/uplevel.test,v 1.11 93/07/17 14:38:22 ouster Exp $ (Berkeley)

if {[string compare test [info procs test]] == 1} then {source defs}

proc a {x y} {
    newset z [expr $x+$y]
    return $z
}
proc newset {name value} {
    uplevel set $name $value
    uplevel 1 {uplevel 1 {set xyz 22}}
}

test uplevel-1.1 {simple operation} {
    set xyz 0
    a 22 33
} 55
test uplevel-1.2 {command is another uplevel command} {
    set xyz 0
    a 22 33
    set xyz
} 22

proc a1 {} {
    b1
    global a a1
    set a $x
    set a1 $y
}
proc b1 {} {
    c1
    global b b1
    set b $x
    set b1 $y
}
proc c1 {} {
    uplevel 1 set x 111
    uplevel #2 set y 222
    uplevel 2 set x 333
    uplevel #1 set y 444
    uplevel 3 set x 555
    uplevel #0 set y 666
}
a1
test uplevel-2.1 {relative and absolute uplevel} {set a} 333
test uplevel-2.2 {relative and absolute uplevel} {set a1} 444
test uplevel-2.3 {relative and absolute uplevel} {set b} 111
test uplevel-2.4 {relative and absolute uplevel} {set b1} 222
test uplevel-2.5 {relative and absolute uplevel} {set x} 555
test uplevel-2.6 {relative and absolute uplevel} {set y} 666

test uplevel-3.1 {uplevel to same level} {
    set x 33
    uplevel #0 set x 44
    set x
} 44
test uplevel-3.2 {uplevel to same level} {
    set x 33
    uplevel 0 set x
} 33
test uplevel-3.3 {uplevel to same level} {
    set y xxx
    proc a1 {} {set y 55; uplevel 0 set y 66; return $y}
    a1
} 66
test uplevel-3.4 {uplevel to same level} {
    set y zzz
    proc a1 {} {set y 55; uplevel #1 set y}
    a1
} 55

test uplevel-4.1 {error: non-existent level} {
    list [catch c1 msg] $msg
} {1 {bad level "#2"}}
test uplevel-4.2 {error: non-existent level} {
    proc c2 {} {uplevel 3 {set a b}}
    list [catch c2 msg] $msg
} {1 {bad level "3"}}
test uplevel-4.3 {error: not enough args} {
    list [catch uplevel msg] $msg
} {1 {wrong # args: should be "uplevel ?level? command ?arg ...?"}}
test uplevel-4.4 {error: not enough args} {
    proc upBug {} {uplevel 1}
    list [catch upBug msg] $msg
} {1 {wrong # args: should be "uplevel ?level? command ?arg ...?"}}

proc a2 {} {
    uplevel a3
}
proc a3 {} {
    global x y
    set x [info level]
    set y [info level 1]
}
a2
test uplevel-5.1 {info level} {set x} 1
test uplevel-5.2 {info level} {set y} a3