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-# Commands covered: 'upvar', 'namespace 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.
-
-if {[lsearch [namespace children] ::tcltest] == -1} {
- package require tcltest 2
- namespace import -force ::tcltest::*
-}
-
-::tcltest::loadTestedCommands
-catch [list package require -exact Tcltest [info patchlevel]]
-
-testConstraint testupvar [llength [info commands testupvar]]
-
-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}
- lsort [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 [lsort [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} -returnCodes error -body {
- upvar
-} -result {wrong # args: should be "upvar ?level? otherVar localVar ?otherVar localVar ...?"}
-test upvar-8.2 {errors in upvar command} -returnCodes error -body {
- upvar 1
-} -result {wrong # args: should be "upvar ?level? otherVar localVar ?otherVar localVar ...?"}
-test upvar-8.2.1 {upvar with numeric first argument} {
- apply {{} {set 0 ok; apply {{} {upvar 0 x; return $x}}}}
-} ok
-test upvar-8.3 {errors in upvar command} -returnCodes error -body {
- proc p1 {} {upvar a b c}
- p1
-} -result {bad level "a"}
-test upvar-8.4 {errors in upvar command} -returnCodes error -body {
- proc p1 {} {upvar 0 b b}
- p1
-} -result {can't upvar from variable to itself}
-test upvar-8.5 {errors in upvar command} -returnCodes error -body {
- proc p1 {} {upvar 0 a b; upvar 0 b a}
- p1
-} -result {can't upvar from variable to itself}
-test upvar-8.6 {errors in upvar command} -returnCodes error -body {
- proc p1 {} {set a 33; upvar b a}
- p1
-} -result {variable "a" already exists}
-test upvar-8.7 {errors in upvar command} -returnCodes error -body {
- proc p1 {} {trace variable a w foo; upvar b a}
- p1
-} -result {variable "a" has traces: can't use for upvar}
-test upvar-8.8 {create nested array with upvar} -body {
- proc p1 {} {upvar x(a) b; set b(2) 44}
- catch {unset x}
- p1
-} -returnCodes error -cleanup {
- unset x
-} -result {can't set "b(2)": variable isn't array}
-test upvar-8.9 {upvar won't create namespace variable that refers to procedure variable} -setup {
- catch {namespace delete {*}[namespace children :: test_ns_*]}
- catch {rename MakeLink ""}
- namespace eval ::test_ns_1 {}
-} -returnCodes error -body {
- proc MakeLink {a} {
- namespace eval ::test_ns_1 {
- upvar a a
- }
- unset ::test_ns_1::a
- }
- MakeLink 1
-} -result {bad variable name "a": can't create namespace variable that refers to procedure variable}
-test upvar-8.10 {upvar will create element alias for new array element} -setup {
- catch {unset upvarArray}
-} -body {
- array set upvarArray {}
- catch {upvar 0 upvarArray(elem) upvarArrayElemAlias}
-} -result {0}
-test upvar-8.11 {upvar will not create a variable that looks like an array} -setup {
- catch {unset upvarArray}
-} -body {
- array set upvarArray {}
- upvar 0 upvarArray(elem) upvarArrayElemAlias(elem)
-} -returnCodes 1 -match glob -result *
-
-test upvar-9.1 {Tcl_UpVar2 procedure} testupvar {
- list [catch {testupvar xyz a {} x global} msg] $msg
-} {1 {bad level "xyz"}}
-test upvar-9.2 {Tcl_UpVar2 procedure} testupvar {
- 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} testupvar {
- 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} testupvar {
- 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} testupvar {
- 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} testupvar {
- 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} testupvar {
- 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}
-
-test upvar-10.1 {CompileWord OBOE} -setup {
- proc linenumber {} {dict get [info frame -1] line}
-} -body {
- apply {n {
- upvar 1 {*}{
- } [return [incr n -[linenumber]]] x
- }} [linenumber]
-} -cleanup {
- rename linenumber {}
-} -result 1
-
-#
-# Tests for 'namespace upvar'. As the implementation is essentially the same as
-# for 'upvar', we only test that the variables are linked correctly, i.e., we
-# assume that the behaviour of variables once the link is established has
-# already been tested above.
-#
-
-# Clear out any namespaces called test_ns_*
-catch {namespace delete {*}[namespace children :: test_ns_*]}
-namespace eval test_ns_0 {
- variable x test_ns_0
-}
-set ::x test_global
-
-test upvar-NS-1.1 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace upvar ::test_ns_0 x w
- set w
- }
-} -result {test_ns_0} -cleanup {
- namespace delete test_ns_1
-}
-test upvar-NS-1.2 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- proc a {} {
- namespace upvar ::test_ns_0 x w
- set w
- }
- return [a]
- }
-} -result {test_ns_0} -cleanup {
- namespace delete test_ns_1
-}
-test upvar-NS-1.3 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace upvar test_ns_0 x w
- set w
- }
-} -returnCodes error -cleanup {
- namespace delete test_ns_1
-} -result {namespace "test_ns_0" not found in "::test_ns_1"}
-test upvar-NS-1.4 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- proc a {} {
- namespace upvar test_ns_0 x w
- set w
- }
- return [a]
- }
-} -returnCodes error -cleanup {
- namespace delete test_ns_1
-} -result {namespace "test_ns_0" not found in "::test_ns_1"}
-
-test upvar-NS-1.5 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace eval test_ns_0 {}
- namespace upvar test_ns_0 x w
- set w
- }
-} -cleanup {
- namespace delete test_ns_1
-} -result {can't read "w": no such variable} -returnCodes error
-test upvar-NS-1.6 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace eval test_ns_0 {}
- proc a {} {
- namespace upvar test_ns_0 x w
- set w
- }
- return [a]
- }
-} -cleanup {
- namespace delete test_ns_1
-} -result {can't read "w": no such variable} -returnCodes error
-test upvar-NS-1.7 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace eval test_ns_0 {
- variable x test_ns_1::test_ns_0
- }
- namespace upvar test_ns_0 x w
- set w
- }
-} -cleanup {
- namespace delete test_ns_1
-} -result {test_ns_1::test_ns_0}
-test upvar-NS-1.8 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- namespace eval test_ns_0 {
- variable x test_ns_1::test_ns_0
- }
- proc a {} {
- namespace upvar test_ns_0 x w
- set w
- }
- return [a]
- }
-} -cleanup {
- namespace delete test_ns_1
-} -result {test_ns_1::test_ns_0}
-test upvar-NS-1.9 {nsupvar links to correct variable} -body {
- namespace eval test_ns_1 {
- variable x test_ns_1
- proc a {} {
- namespace upvar test_ns_0 x w
- set w
- }
- return [a]
- }
-} -returnCodes error -cleanup {
- namespace delete test_ns_1
-} -result {namespace "test_ns_0" not found in "::test_ns_1"}
-
-test upvar-NS-2.1 {TIP 323} -returnCodes error -body {
- namespace upvar
-} -result {wrong # args: should be "namespace upvar ns ?otherVar myVar ...?"}
-test upvar-NS-2.2 {TIP 323} -setup {
- namespace eval test_ns_1 {}
-} -body {
- namespace upvar test_ns_1
-} -cleanup {
- namespace delete test_ns_1
-} -result {}
-
-test upvar-NS-3.1 {CompileWord OBOE} -setup {
- proc linenumber {} {dict get [info frame -1] line}
-} -body {
- apply {n {
- namespace upvar {*}{
- } [return [incr n -[linenumber]]] x y
- }} [linenumber]
-} -cleanup {
- rename linenumber {}
-} -result 1
-test upvar-NS-3.2 {CompileWord OBOE} -setup {
- proc linenumber {} {dict get [info frame -1] line}
-} -body {
- apply {n {
- namespace upvar :: {*}{
- } [return [incr n -[linenumber]]] x
- }} [linenumber]
-} -cleanup {
- rename linenumber {}
-} -result 1
-test upvar-NS-3.3 {CompileWord OBOE} -setup {
- proc linenumber {} {dict get [info frame -1] line}
-} -body {
- apply {n {
- variable x {*}{
- } [return [incr n -[linenumber]]]
- }} [linenumber]
-} -cleanup {
- rename linenumber {}
-} -result 1
-
-# cleanup
-::tcltest::cleanupTests
-return
-
-# Local Variables:
-# mode: tcl
-# End: