# 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 1.2 2001/09/14 01:43:39 zlaski Exp $
if {[string compare test [info procs test]] == 1} then {source defs}
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}
foo x
} {{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-4.1 {continue tests} {catch continue} 4
test foreach-4.2 {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-4.3 {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-4.4 {continue tests} {catch {continue foo} msg} 1
test foreach-4.5 {continue tests} {
catch {continue foo} msg
set msg
} {wrong # args: should be "continue"}
# Check "break".
test foreach-5.1 {break tests} {catch break} 3
test foreach-5.2 {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-5.3 {break tests} {catch {break foo} msg} 1
test foreach-5.4 {break tests} {
catch {break foo} msg
set msg
} {wrong # args: should be "break"}
catch {unset a}
catch {unset x}