- # Commands covered: foreach, continue, break
- #
- # 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) 1994-1997 Sun Microsystems, Inc.
- #
- # See the file "license.terms" for information on usage and redistribution
- # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- #
- # RCS: @(#) $Id: foreach.test,v 1.8.8.3 2007/03/13 16:26:33 dgp Exp $
- if {[lsearch [namespace children] ::tcltest] == -1} {
- package require tcltest
- namespace import -force ::tcltest::*
- }
- catch {unset a}
- catch {unset x}
- # Basic "foreach" operation.
- test foreach-1.1 {basic foreach tests} {
- set a {}
- foreach i {a b c d} {
- set a [concat $a $i]
- }
- set a
- } {a b c d}
- test foreach-1.2 {basic foreach tests} {
- set a {}
- foreach i {a b {{c d} e} {123 {{x}}}} {
- set a [concat $a $i]
- }
- set a
- } {a b {c d} e 123 {{x}}}
- test foreach-1.3 {basic foreach tests} {catch {foreach} msg} 1
- test foreach-1.4 {basic foreach tests} {
- catch {foreach} msg
- set msg
- } {wrong # args: should be "foreach varList list ?varList list ...? command"}
- test foreach-1.5 {basic foreach tests} {catch {foreach i} msg} 1
- test foreach-1.6 {basic foreach tests} {
- catch {foreach i} msg
- set msg
- } {wrong # args: should be "foreach varList list ?varList list ...? command"}
- test foreach-1.7 {basic foreach tests} {catch {foreach i j} msg} 1
- test foreach-1.8 {basic foreach tests} {
- catch {foreach i j} msg
- set msg
- } {wrong # args: should be "foreach varList list ?varList list ...? command"}
- test foreach-1.9 {basic foreach tests} {catch {foreach i j k l} msg} 1
- test foreach-1.10 {basic foreach tests} {
- catch {foreach i j k l} msg
- set msg
- } {wrong # args: should be "foreach varList list ?varList list ...? command"}
- test foreach-1.11 {basic foreach tests} {
- set a {}
- foreach i {} {
- set a [concat $a $i]
- }
- set a
- } {}
- test foreach-1.12 {foreach errors} {
- list [catch {foreach {{a}{b}} {1 2 3} {}} msg] $msg
- } {1 {list element in braces followed by "{b}" instead of space}}
- test foreach-1.13 {foreach errors} {
- list [catch {foreach a {{1 2}3} {}} msg] $msg
- } {1 {list element in braces followed by "3" instead of space}}
- catch {unset a}
- test foreach-1.14 {foreach errors} {
- catch {unset a}
- set a(0) 44
- list [catch {foreach a {1 2 3} {}} msg] $msg
- } {1 {couldn't set loop variable: "a"}}
- test foreach-1.15 {foreach errors} {
- list [catch {foreach {} {} {}} msg] $msg
- } {1 {foreach varlist is empty}}
- catch {unset a}
- test foreach-2.1 {parallel foreach tests} {
- set x {}
- foreach {a b} {1 2 3 4} {
- append x $b $a
- }
- set x
- } {2143}
- test foreach-2.2 {parallel foreach tests} {
- set x {}
- foreach {a b} {1 2 3 4 5} {
- append x $b $a
- }
- set x
- } {21435}
- test foreach-2.3 {parallel foreach tests} {
- set x {}
- foreach a {1 2 3} b {4 5 6} {
- append x $b $a
- }
- set x
- } {415263}
- test foreach-2.4 {parallel foreach tests} {
- set x {}
- foreach a {1 2 3} b {4 5 6 7 8} {
- append x $b $a
- }
- set x
- } {41526378}
- test foreach-2.5 {parallel foreach tests} {
- set x {}
- foreach {a b} {a b A B aa bb} c {c C cc CC} {
- append x $a $b $c
- }
- set x
- } {abcABCaabbccCC}
- test foreach-2.6 {parallel foreach tests} {
- set x {}
- foreach a {1 2 3} b {1 2 3} c {1 2 3} d {1 2 3} e {1 2 3} {
- append x $a $b $c $d $e
- }
- set x
- } {111112222233333}
- test foreach-2.7 {parallel foreach tests} {
- set x {}
- foreach a {} b {1 2 3} c {1 2} d {1 2 3 4} e {{1 2}} {
- append x $a $b $c $d $e
- }
- set x
- } {1111 2222334}
- test foreach-2.8 {foreach only sets vars if repeating loop} {
- proc foo {} {
- set rgb {65535 0 0}
- foreach {r g b} [set rgb] {}
- return "r=$r, g=$g, b=$b"
- }
- foo
- } {r=65535, g=0, b=0}
- test foreach-2.9 {foreach only supports local scalar variables} {
- proc foo {} {
- set x {}
- foreach {a(3)} {1 2 3 4} {lappend x [set {a(3)}]}
- set x
- }
- foo
- } {1 2 3 4}
- test foreach-3.1 {compiled foreach backward jump works correctly} {
- catch {unset x}
- proc foo {arrayName} {
- upvar 1 $arrayName a
- set l {}
- foreach member [array names a] {
- lappend l [list $member [set a($member)]]
- }
- return $l
- }
- array set x {0 zero 1 one 2 two 3 three}
- lsort [foo x]
- } [lsort {{0 zero} {1 one} {2 two} {3 three}}]
- test foreach-4.1 {noncompiled foreach and shared variable or value list objects that are converted to another type} {
- catch {unset x}
- foreach {12.0} {a b c} {
- set x 12.0
- set x [expr $x + 1]
- }
- set x
- } 13.0
- # Check "continue".
- test foreach-5.1 {continue tests} {catch continue} 4
- test foreach-5.2 {continue tests} {
- set a {}
- foreach i {a b c d} {
- if {[string compare $i "b"] == 0} continue
- set a [concat $a $i]
- }
- set a
- } {a c d}
- test foreach-5.3 {continue tests} {
- set a {}
- foreach i {a b c d} {
- if {[string compare $i "b"] != 0} continue
- set a [concat $a $i]
- }
- set a
- } {b}
- test foreach-5.4 {continue tests} {catch {continue foo} msg} 1
- test foreach-5.5 {continue tests} {
- catch {continue foo} msg
- set msg
- } {wrong # args: should be "continue"}
- # Check "break".
- test foreach-6.1 {break tests} {catch break} 3
- test foreach-6.2 {break tests} {
- set a {}
- foreach i {a b c d} {
- if {[string compare $i "c"] == 0} break
- set a [concat $a $i]
- }
- set a
- } {a b}
- test foreach-6.3 {break tests} {catch {break foo} msg} 1
- test foreach-6.4 {break tests} {
- catch {break foo} msg
- set msg
- } {wrong # args: should be "break"}
- # Check for bug #406709
- test foreach-6.5 {break tests} {
- proc a {} {
- set a 1
- foreach b b {list [concat a; break]; incr a}
- incr a
- }
- a
- } {2}
- # Test for incorrect "double evaluation" semantics
- test foreach-7.1 {delayed substitution of body} {
- proc foo {} {
- set a 0
- foreach a [list 1 2 3] "
- set x $a
- "
- set x
- }
- foo
- } {0}
- # [Bug 1671138]; infinite loop with empty var list in bytecompiled version
- test foreach-9.1 {compiled empty var list} {
- proc foo {} {
- foreach {} x {
- error "reached body"
- }
- }
- list [catch { foo } msg] $msg
- } {1 {foreach varlist is empty}}
- test foreach-10.1 {foreach: [Bug 1671087]} -setup {
- proc demo {} {
- set vals {1 2 3 4}
- trace add variable x write {string length $vals ;# }
- foreach {x y} $vals {format $y}
- }
- } -body {
- demo
- } -cleanup {
- rename demo {}
- } -result {}
- # cleanup
- catch {unset a}
- catch {unset x}
- ::tcltest::cleanupTests
- return