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# Commands covered: lpop
#
# 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 © 1991-1993 The Regents of the University of California.
# Copyright © 1994 Sun Microsystems, Inc.
# Copyright © 1998-1999 Scriptics Corporation.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
if {"::tcltest" ni [namespace children]} {
package require tcltest 2.5
namespace import -force ::tcltest::*
}
unset -nocomplain no; # following tests expecting var "no" does not exists
test lpop-1.1 {error conditions} -returnCodes error -body {
lpop no
} -result {can't read "no": no such variable}
test lpop-1.2 {error conditions} -returnCodes error -body {
lpop no 0
} -result {can't read "no": no such variable}
test lpop-1.3 {error conditions} -returnCodes error -body {
set l "x {}x"
lpop l
} -result {list element in braces followed by "x" instead of space}
test lpop-1.4 {error conditions} -returnCodes error -body {
set l "x y"
lpop l -1
} -result {index "-1" out of range}
test lpop-1.4b {error conditions (also check SF on empty list variable, bug [234d6c811d])} -body {
set l "x y"
list [lpop l] [lpop l] [catch {lpop l} v] $v [catch {lpop l 0} v] $v $l
} -result {y x 1 {index "end" out of range} 1 {index "0" out of range} {}}
test lpop-1.5 {error conditions} -returnCodes error -body {
set l "x y z"
lpop l 3
} -result {index "3" out of range} ;#-errorCode {TCL OPERATION LPOP BADINDEX}
test lpop-1.6 {error conditions} -returnCodes error -body {
set l "x y"
lpop l end+1
} -result {index "end+1" out of range}
test lpop-1.7 {error conditions} -returnCodes error -body {
set l "x y"
lpop l {}
} -match glob -result {bad index *}
test lpop-1.8 {error conditions} -returnCodes error -body {
set l "x y"
lpop l 0 0 0 0 1
} -result {index "1" out of range}
test lpop-1.9 {error conditions} -returnCodes error -body {
set l "x y"
lpop l {1 0}
} -match glob -result {bad index *}
test lpop-2.1 {basic functionality} -body {
set l "x y z"
list [lpop l 0] $l
} -result {x {y z}}
test lpop-2.2 {basic functionality} -body {
set l "x y z"
list [lpop l 1] $l
} -result {y {x z}}
test lpop-2.3 {basic functionality} -body {
set l "x y z"
list [lpop l] $l
} -result {z {x y}}
test lpop-2.4 {basic functionality} -body {
set l "x y z"
set l2 $l
list [lpop l] $l $l2
} -result {z {x y} {x y z}}
test lpop-3.1 {nested} -body {
set l "x y"
set l2 $l
list [lpop l 0 0 0 0] $l $l2
} -result {x {{{{}}} y} {x y}}
test lpop-3.2 {nested} -body {
set l "{x y} {a b}"
list [lpop l 0 1] $l
} -result {y {x {a b}}}
test lpop-3.3 {nested} -body {
set l "{x y} {a b}"
list [lpop l 1 0] $l
} -result {a {{x y} b}}
test lpop-99.1 {performance} -constraints perf -body {
set l [lrepeat 10000 x]
set l2 $l
set t1 [time {
while {[llength $l] >= 2} {
lpop l end
}
}]
set l [lrepeat 30000 x]
set l2 $l
set t2 [time {
while {[llength $l] >= 2} {
lpop l end
}
}]
regexp {\d+} $t1 ms1
regexp {\d+} $t2 ms2
set ratio [expr {double($ms2)/$ms1}]
# Deleting from end should have linear performance
expr {$ratio > 4 ? $ratio : 4}
} -result {4}
test lpop-99.2 {performance} -constraints perf -body {
set l [lrepeat 10000 x]
set l2 $l
set t1 [time {
while {[llength $l] >= 2} {
lpop l 1
}
}]
set l [lrepeat 30000 x]
set l2 $l
set t2 [time {
while {[llength $l] >= 2} {
lpop l 1
}
}]
regexp {\d+} $t1 ms1
regexp {\d+} $t2 ms2
set ratio [expr {double($ms2)/$ms1}]
expr {$ratio > 10 ? $ratio : 10}
} -result {10}
# cleanup
::tcltest::cleanupTests
return
# Local Variables:
# mode: tcl
# End:
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