297 lines
7.4 KiB
Plaintext
297 lines
7.4 KiB
Plaintext
# Commands covered: foreach, continue, break
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#
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# This file contains a collection of tests for one or more of the Tcl
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# built-in commands. Sourcing this file into Tcl runs the tests and
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# generates output for errors. No output means no errors were found.
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#
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# Copyright (c) 1991-1993 The Regents of the University of California.
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# Copyright (c) 1994-1997 Sun Microsystems, Inc.
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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if {"::tcltest" ni [namespace children]} {
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package require tcltest 2.5
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namespace import -force ::tcltest::*
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}
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catch {unset a}
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catch {unset x}
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# Basic "foreach" operation.
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test foreach-1.1 {basic foreach tests} {
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set a {}
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foreach i {a b c d} {
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set a [concat $a $i]
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}
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set a
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} {a b c d}
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test foreach-1.2 {basic foreach tests} {
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set a {}
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foreach i {a b {{c d} e} {123 {{x}}}} {
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set a [concat $a $i]
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}
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set a
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} {a b {c d} e 123 {{x}}}
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test foreach-1.3 {basic foreach tests} {catch {foreach} msg} 1
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test foreach-1.4 {basic foreach tests} {
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catch {foreach} msg
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set msg
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} {wrong # args: should be "foreach varList list ?varList list ...? command"}
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test foreach-1.5 {basic foreach tests} {catch {foreach i} msg} 1
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test foreach-1.6 {basic foreach tests} {
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catch {foreach i} msg
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set msg
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} {wrong # args: should be "foreach varList list ?varList list ...? command"}
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test foreach-1.7 {basic foreach tests} {catch {foreach i j} msg} 1
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test foreach-1.8 {basic foreach tests} {
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catch {foreach i j} msg
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set msg
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} {wrong # args: should be "foreach varList list ?varList list ...? command"}
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test foreach-1.9 {basic foreach tests} {catch {foreach i j k l} msg} 1
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test foreach-1.10 {basic foreach tests} {
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catch {foreach i j k l} msg
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set msg
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} {wrong # args: should be "foreach varList list ?varList list ...? command"}
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test foreach-1.11 {basic foreach tests} {
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set a {}
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foreach i {} {
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set a [concat $a $i]
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}
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set a
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} {}
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test foreach-1.12 {foreach errors} {
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list [catch {foreach {{a}{b}} {1 2 3} {}} msg] $msg
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} {1 {list element in braces followed by "{b}" instead of space}}
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test foreach-1.13 {foreach errors} {
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list [catch {foreach a {{1 2}3} {}} msg] $msg
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} {1 {list element in braces followed by "3" instead of space}}
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catch {unset a}
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test foreach-1.14 {foreach errors} {
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catch {unset a}
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set a(0) 44
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list [catch {foreach a {1 2 3} {}} msg o] $msg $::errorInfo
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} {1 {can't set "a": variable is array} {can't set "a": variable is array
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(setting foreach loop variable "a")
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invoked from within
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"foreach a {1 2 3} {}"}}
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test foreach-1.15 {foreach errors} {
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list [catch {foreach {} {} {}} msg] $msg
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} {1 {foreach varlist is empty}}
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catch {unset a}
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test foreach-2.1 {parallel foreach tests} {
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set x {}
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foreach {a b} {1 2 3 4} {
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append x $b $a
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}
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set x
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} {2143}
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test foreach-2.2 {parallel foreach tests} {
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set x {}
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foreach {a b} {1 2 3 4 5} {
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append x $b $a
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}
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set x
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} {21435}
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test foreach-2.3 {parallel foreach tests} {
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set x {}
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foreach a {1 2 3} b {4 5 6} {
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append x $b $a
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}
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set x
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} {415263}
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test foreach-2.4 {parallel foreach tests} {
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set x {}
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foreach a {1 2 3} b {4 5 6 7 8} {
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append x $b $a
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}
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set x
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} {41526378}
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test foreach-2.5 {parallel foreach tests} {
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set x {}
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foreach {a b} {a b A B aa bb} c {c C cc CC} {
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append x $a $b $c
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}
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set x
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} {abcABCaabbccCC}
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test foreach-2.6 {parallel foreach tests} {
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set x {}
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foreach a {1 2 3} b {1 2 3} c {1 2 3} d {1 2 3} e {1 2 3} {
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append x $a $b $c $d $e
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}
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set x
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} {111112222233333}
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test foreach-2.7 {parallel foreach tests} {
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set x {}
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foreach a {} b {1 2 3} c {1 2} d {1 2 3 4} e {{1 2}} {
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append x $a $b $c $d $e
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}
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set x
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} {1111 2222334}
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test foreach-2.8 {foreach only sets vars if repeating loop} {
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proc foo {} {
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set rgb {65535 0 0}
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foreach {r g b} [set rgb] {}
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return "r=$r, g=$g, b=$b"
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}
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foo
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} {r=65535, g=0, b=0}
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test foreach-2.9 {foreach only supports local scalar variables} {
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proc foo {} {
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set x {}
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foreach {a(3)} {1 2 3 4} {lappend x [set {a(3)}]}
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set x
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}
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foo
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} {1 2 3 4}
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test foreach-3.1 {compiled foreach backward jump works correctly} {
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catch {unset x}
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proc foo {arrayName} {
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upvar 1 $arrayName a
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set l {}
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foreach member [array names a] {
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lappend l [list $member [set a($member)]]
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}
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return $l
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}
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array set x {0 zero 1 one 2 two 3 three}
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lsort [foo x]
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} [lsort {{0 zero} {1 one} {2 two} {3 three}}]
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test foreach-4.1 {noncompiled foreach and shared variable or value list objects that are converted to another type} {
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catch {unset x}
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foreach {12.0} {a b c} {
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set x 12.0
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set x [expr {$x + 1}]
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}
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set x
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} 13.0
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# Check "continue".
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test foreach-5.1 {continue tests} {catch continue} 4
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test foreach-5.2 {continue tests} {
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set a {}
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foreach i {a b c d} {
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if {[string compare $i "b"] == 0} continue
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set a [concat $a $i]
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}
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set a
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} {a c d}
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test foreach-5.3 {continue tests} {
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set a {}
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foreach i {a b c d} {
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if {[string compare $i "b"] != 0} continue
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set a [concat $a $i]
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}
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set a
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} {b}
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test foreach-5.4 {continue tests} {catch {continue foo} msg} 1
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test foreach-5.5 {continue tests} {
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catch {continue foo} msg
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set msg
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} {wrong # args: should be "continue"}
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# Check "break".
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test foreach-6.1 {break tests} {catch break} 3
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test foreach-6.2 {break tests} {
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set a {}
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foreach i {a b c d} {
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if {[string compare $i "c"] == 0} break
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set a [concat $a $i]
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}
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set a
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} {a b}
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test foreach-6.3 {break tests} {catch {break foo} msg} 1
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test foreach-6.4 {break tests} {
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catch {break foo} msg
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set msg
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} {wrong # args: should be "break"}
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# Check for bug #406709
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test foreach-6.5 {break tests} -body {
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proc a {} {
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set a 1
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foreach b b {list [concat a; break]; incr a}
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incr a
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}
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a
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} -cleanup {
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rename a {}
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} -result {2}
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# Test for incorrect "double evaluation" semantics
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test foreach-7.1 {delayed substitution of body} {
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proc foo {} {
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set a 0
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foreach a [list 1 2 3] "
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set x $a
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"
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set x
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}
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foo
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} {0}
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# Test for [Bug 1189274]; crash on failure
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test foreach-8.1 {empty list handling} {
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proc crash {} {
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rename crash {}
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set a "x y z"
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set b ""
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foreach aa $a bb $b { set x "aa = $aa bb = $bb" }
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}
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crash
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} {}
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# [Bug 1671138]; infinite loop with empty var list in bytecompiled version
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test foreach-9.1 {compiled empty var list} {
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proc foo {} {
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foreach {} x {
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error "reached body"
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}
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}
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list [catch { foo } msg] $msg
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} {1 {foreach varlist is empty}}
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test foreach-9.2 {line numbers} -setup {
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proc linenumber {} {dict get [info frame -1] line}
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} -body {
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apply {n {
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foreach x y {*}{
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} {return [incr n -[linenumber]]}
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}} [linenumber]
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} -cleanup {
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rename linenumber {}
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} -result 1
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test foreach-10.1 {foreach: [Bug 1671087]} -setup {
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proc demo {} {
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set vals {1 2 3 4}
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trace add variable x write {string length $vals ;# }
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foreach {x y} $vals {format $y}
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}
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} -body {
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demo
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} -cleanup {
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rename demo {}
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} -result {}
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test foreach-11.1 {error then dereference loop var (dev bug)} {
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catch { foreach a 0 b {1 2 3} { error x } }
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set a
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} 0
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test foreach-11.2 {error then dereference loop var (dev bug)} {
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catch { foreach a 0 b {1 2 3} { incr a $b; error x } }
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set a
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} 1
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# cleanup
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catch {unset a}
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catch {unset x}
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catch {rename foo {}}
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::tcltest::cleanupTests
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return
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