- # Commands covered: upvar
- #
- # 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.
- # Copyright (c) 1994 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: upvar.test,v 1.7 2000/04/10 17:19:05 ericm Exp $
- if {[lsearch [namespace children] ::tcltest] == -1} {
- package require tcltest
- namespace import -force ::tcltest::*
- }
- test upvar-1.1 {reading variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2}
- proc p2 {} {upvar a x1 b x2 c x3 d x4; set a abc; list $x1 $x2 $x3 $x4 $a}
- p1 foo bar
- } {foo bar 22 33 abc}
- test upvar-1.2 {reading variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2}
- proc p2 {} {p3}
- proc p3 {} {upvar 2 a x1 b x2 c x3 d x4; set a abc; list $x1 $x2 $x3 $x4 $a}
- p1 foo bar
- } {foo bar 22 33 abc}
- test upvar-1.3 {reading variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2}
- proc p2 {} {p3}
- proc p3 {} {
- upvar #1 a x1 b x2 c x3 d x4
- set a abc
- list $x1 $x2 $x3 $x4 $a
- }
- p1 foo bar
- } {foo bar 22 33 abc}
- test upvar-1.4 {reading variables with upvar} {
- set x1 44
- set x2 55
- proc p1 {} {p2}
- proc p2 {} {
- upvar 2 x1 x1 x2 a
- upvar #0 x1 b
- set c $b
- incr b 3
- list $x1 $a $b
- }
- p1
- } {47 55 47}
- test upvar-1.5 {reading array elements with upvar} {
- proc p1 {} {set a(0) zeroth; set a(1) first; p2}
- proc p2 {} {upvar a(0) x; set x}
- p1
- } {zeroth}
- test upvar-2.1 {writing variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2; list $a $b $c $d}
- proc p2 {} {
- upvar a x1 b x2 c x3 d x4
- set x1 14
- set x4 88
- }
- p1 foo bar
- } {14 bar 22 88}
- test upvar-2.2 {writing variables with upvar} {
- set x1 44
- set x2 55
- proc p1 {x1 x2} {
- upvar #0 x1 a
- upvar x2 b
- set a $x1
- set b $x2
- }
- p1 newbits morebits
- list $x1 $x2
- } {newbits morebits}
- test upvar-2.3 {writing variables with upvar} {
- catch {unset x1}
- catch {unset x2}
- proc p1 {x1 x2} {
- upvar #0 x1 a
- upvar x2 b
- set a $x1
- set b $x2
- }
- p1 newbits morebits
- list [catch {set x1} msg] $msg [catch {set x2} msg] $msg
- } {0 newbits 0 morebits}
- test upvar-2.4 {writing array elements with upvar} {
- proc p1 {} {set a(0) zeroth; set a(1) first; list [p2] $a(0)}
- proc p2 {} {upvar a(0) x; set x xyzzy}
- p1
- } {xyzzy xyzzy}
- test upvar-3.1 {unsetting variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2; lsort [info vars]}
- proc p2 {} {
- upvar 1 a x1 d x2
- unset x1 x2
- }
- p1 foo bar
- } {b c}
- test upvar-3.2 {unsetting variables with upvar} {
- proc p1 {a b} {set c 22; set d 33; p2; lsort [info vars]}
- proc p2 {} {
- upvar 1 a x1 d x2
- unset x1 x2
- set x2 28
- }
- p1 foo bar
- } {b c d}
- test upvar-3.3 {unsetting variables with upvar} {
- set x1 44
- set x2 55
- proc p1 {} {p2}
- proc p2 {} {
- upvar 2 x1 a
- upvar #0 x2 b
- unset a b
- }
- p1
- list [info exists x1] [info exists x2]
- } {0 0}
- test upvar-3.4 {unsetting variables with upvar} {
- set x1 44
- set x2 55
- proc p1 {} {
- upvar x1 a x2 b
- unset a b
- set b 118
- }
- p1
- list [info exists x1] [catch {set x2} msg] $msg
- } {0 0 118}
- test upvar-3.5 {unsetting array elements with upvar} {
- proc p1 {} {
- set a(0) zeroth
- set a(1) first
- set a(2) second
- p2
- array names a
- }
- proc p2 {} {upvar a(0) x; unset x}
- p1
- } {1 2}
- test upvar-3.6 {unsetting then resetting array elements with upvar} {
- proc p1 {} {
- set a(0) zeroth
- set a(1) first
- set a(2) second
- p2
- list [array names a] [catch {set a(0)} msg] $msg
- }
- proc p2 {} {upvar a(0) x; unset x; set x 12345}
- p1
- } {{0 1 2} 0 12345}
- test upvar-4.1 {nested upvars} {
- set x1 88
- proc p1 {a b} {set c 22; set d 33; p2}
- proc p2 {} {global x1; upvar c x2; p3}
- proc p3 {} {
- upvar x1 a x2 b
- list $a $b
- }
- p1 14 15
- } {88 22}
- test upvar-4.2 {nested upvars} {
- set x1 88
- proc p1 {a b} {set c 22; set d 33; p2; list $a $b $c $d}
- proc p2 {} {global x1; upvar c x2; p3}
- proc p3 {} {
- upvar x1 a x2 b
- set a foo
- set b bar
- }
- list [p1 14 15] $x1
- } {{14 15 bar 33} foo}
- proc tproc {args} {global x; set x [list $args [uplevel info vars]]}
- test upvar-5.1 {traces involving upvars} {
- proc p1 {a b} {set c 22; set d 33; trace var c rw tproc; p2}
- proc p2 {} {upvar c x1; set x1 22}
- set x ---
- p1 foo bar
- set x
- } {{x1 {} w} x1}
- test upvar-5.2 {traces involving upvars} {
- proc p1 {a b} {set c 22; set d 33; trace var c rw tproc; p2}
- proc p2 {} {upvar c x1; set x1}
- set x ---
- p1 foo bar
- set x
- } {{x1 {} r} x1}
- test upvar-5.3 {traces involving upvars} {
- proc p1 {a b} {set c 22; set d 33; trace var c rwu tproc; p2}
- proc p2 {} {upvar c x1; unset x1}
- set x ---
- p1 foo bar
- set x
- } {{x1 {} u} x1}
- test upvar-6.1 {retargeting an upvar} {
- proc p1 {} {
- set a(0) zeroth
- set a(1) first
- set a(2) second
- p2
- }
- proc p2 {} {
- upvar a x
- set result {}
- foreach i [array names x] {
- upvar a($i) x
- lappend result $x
- }
- lsort $result
- }
- p1
- } {first second zeroth}
- test upvar-6.2 {retargeting an upvar} {
- set x 44
- set y abcde
- proc p1 {} {
- global x
- set result $x
- upvar y x
- lappend result $x
- }
- p1
- } {44 abcde}
- test upvar-6.3 {retargeting an upvar} {
- set x 44
- set y abcde
- proc p1 {} {
- upvar y x
- lappend result $x
- global x
- lappend result $x
- }
- p1
- } {abcde 44}
- test upvar-7.1 {upvar to same level} {
- set x 44
- set y 55
- catch {unset uv}
- upvar #0 x uv
- set uv abc
- upvar 0 y uv
- set uv xyzzy
- list $x $y
- } {abc xyzzy}
- test upvar-7.2 {upvar to same level} {
- set x 1234
- set y 4567
- proc p1 {x y} {
- upvar 0 x uv
- set uv $y
- return "$x $y"
- }
- p1 44 89
- } {89 89}
- test upvar-7.3 {upvar to same level} {
- set x 1234
- set y 4567
- proc p1 {x y} {
- upvar #1 x uv
- set uv $y
- return "$x $y"
- }
- p1 xyz abc
- } {abc abc}
- test upvar-7.4 {upvar to same level: tricky problems when deleting variable table} {
- proc tt {} {upvar #1 toto loc; return $loc}
- list [catch tt msg] $msg
- } {1 {can't read "loc": no such variable}}
- test upvar-7.5 {potential memory leak when deleting variable table} {
- proc leak {} {
- array set foo {1 2 3 4}
- upvar 0 foo(1) bar
- }
- leak
- } {}
- test upvar-8.1 {errors in upvar command} {
- list [catch upvar msg] $msg
- } {1 {wrong # args: should be "upvar ?level? otherVar localVar ?otherVar localVar ...?"}}
- test upvar-8.2 {errors in upvar command} {
- list [catch {upvar 1} msg] $msg
- } {1 {wrong # args: should be "upvar ?level? otherVar localVar ?otherVar localVar ...?"}}
- test upvar-8.3 {errors in upvar command} {
- proc p1 {} {upvar a b c}
- list [catch p1 msg] $msg
- } {1 {wrong # args: should be "upvar ?level? otherVar localVar ?otherVar localVar ...?"}}
- test upvar-8.4 {errors in upvar command} {
- proc p1 {} {upvar 0 b b}
- list [catch p1 msg] $msg
- } {1 {can't upvar from variable to itself}}
- test upvar-8.5 {errors in upvar command} {
- proc p1 {} {upvar 0 a b; upvar 0 b a}
- list [catch p1 msg] $msg
- } {1 {can't upvar from variable to itself}}
- test upvar-8.6 {errors in upvar command} {
- proc p1 {} {set a 33; upvar b a}
- list [catch p1 msg] $msg
- } {1 {variable "a" already exists}}
- test upvar-8.7 {errors in upvar command} {
- proc p1 {} {trace variable a w foo; upvar b a}
- list [catch p1 msg] $msg
- } {1 {variable "a" has traces: can't use for upvar}}
- test upvar-8.8 {create nested array with upvar} {
- proc p1 {} {upvar x(a) b; set b(2) 44}
- catch {unset x}
- list [catch p1 msg] $msg
- } {1 {can't set "b(2)": variable isn't array}}
- test upvar-8.9 {upvar won't create namespace variable that refers to procedure variable} {
- catch {eval namespace delete [namespace children :: test_ns_*]}
- catch {rename MakeLink ""}
- namespace eval ::test_ns_1 {}
- proc MakeLink {a} {
- namespace eval ::test_ns_1 {
- upvar a a
- }
- unset ::test_ns_1::a
- }
- list [catch {MakeLink 1} msg] $msg
- } {1 {bad variable name "a": upvar won't create namespace variable that refers to procedure variable}}
- test upvar-8.10 {upvar will create element alias for new array element} {
- catch {unset upvarArray}
- array set upvarArray {}
- catch {upvar 0 upvarArray(elem) upvarArrayElemAlias}
- } {0}
- if {[info commands testupvar] != {}} {
- test upvar-9.1 {Tcl_UpVar2 procedure} {
- list [catch {testupvar xyz a {} x global} msg] $msg
- } {1 {bad level "xyz"}}
- test upvar-9.2 {Tcl_UpVar2 procedure} {
- catch {unset a}
- catch {unset x}
- set a 44
- list [catch {testupvar #0 a 1 x global} msg] $msg
- } {1 {can't access "a(1)": variable isn't array}}
- test upvar-9.3 {Tcl_UpVar2 procedure} {
- proc foo {} {
- testupvar 1 a {} x local
- set x
- }
- catch {unset a}
- catch {unset x}
- set a 44
- foo
- } {44}
- test upvar-9.4 {Tcl_UpVar2 procedure} {
- proc foo {} {
- testupvar 1 a {} _up_ global
- list [catch {set x} msg] $msg
- }
- catch {unset a}
- catch {unset _up_}
- set a 44
- concat [foo] $_up_
- } {1 {can't read "x": no such variable} 44}
- test upvar-9.5 {Tcl_UpVar2 procedure} {
- proc foo {} {
- testupvar 1 a b x local
- set x
- }
- catch {unset a}
- catch {unset x}
- set a(b) 1234
- foo
- } {1234}
- test upvar-9.6 {Tcl_UpVar procedure} {
- proc foo {} {
- testupvar 1 a x local
- set x
- }
- catch {unset a}
- catch {unset x}
- set a xyzzy
- foo
- } {xyzzy}
- test upvar-9.7 {Tcl_UpVar procedure} {
- proc foo {} {
- testupvar #0 a(b) x local
- set x
- }
- catch {unset a}
- catch {unset x}
- set a(b) 1234
- foo
- } {1234}
- }
- catch {unset a}
- # cleanup
- ::tcltest::cleanupTests
- return