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# crc32bugs.test - Copyright (C) 2002 Pat Thoyts <patthoyts@users.sf.net>
#
# Bug finding for crc32 module.
# In particular we are looking for byte order problems, and issues between
# the trf code and tcl-only code.
#
# -------------------------------------------------------------------------
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
# -------------------------------------------------------------------------
# RCS: @(#) $Id: crc32bugs.test,v 1.8 2006/10/09 21:41:40 andreas_kupries Exp $
# -------------------------------------------------------------------------
source [file join \
[file dirname [file dirname [file join [pwd] [info script]]]] \
devtools testutilities.tcl]
testsNeedTcl 8.2
testsNeedTcltest 1.0
catch {namespace delete ::crc}
support {
useLocal crc16.tcl crc16
}
testing {
useLocal crc32.tcl crc32
}
# -------------------------------------------------------------------------
puts "> $::tcl_platform(byteOrder)"
if {[::crc::LoadAccelerator critcl]} {
puts "> bugs, critcl based"
}
if {[::crc::LoadAccelerator trf]} {
puts "> bugs, Trf based"
}
puts "> bugs, pure Tcl"
# -------------------------------------------------------------------------
# Handle multiple implementation testing
#
array set preserve [array get ::crc::accel]
proc implementations {} {
variable ::crc::accel
foreach {a v} [array get accel] {if {$v} {lappend r $a}}
lappend r tcl; set r
}
proc select_implementation {impl} {
variable ::crc::accel
foreach e [array names accel] { set accel($e) 0 }
if {[string compare "tcl" $impl] != 0} {
set accel($impl) 1
}
}
proc reset_implementation {} {
variable ::crc::accel
array set accel [array get ::preserve]
}
# -------------------------------------------------------------------------
set tests {
1 "" "0"
2 "\x00" "d202ef8d"
3 "\x00\x00" "41d912ff"
4 "\x00\x00\x00" "ff41d912"
5 "\x00\x00\x00\x00" "2144df1c"
6 "\xFF" "ff000000"
7 "\xFF\xFF" "ffff0000"
8 "\xFF\xFF\xFF" "ffffff00"
9 "\xFF\xFF\xFF\xFF" "ffffffff"
10 "\x00\x00\x00\x01" "5643ef8a"
11 "\x80\x00\x00\x00" "cc1d6927"
}
foreach impl [implementations] {
select_implementation $impl
foreach {n msg expected} $tests {
test crc32bugs-$impl-1.$n "crc32 (crc32 and crc16 comparison)" {
set r [catch {
list [::crc::crc32 -format %x $msg] \
[::crc::crc-32 -format %x $msg]
} err]
if {$r} {lappend err $::errorInfo}
list $r $err
} [list 0 [list $expected $expected]]
}
}
# -------------------------------------------------------------------------
testsuiteCleanup
# Local Variables:
# mode: tcl
# indent-tabs-mode: nil
# End:
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