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# crc16.test - Copyright (C) 2002 Pat Thoyts <patthoyts@users.sourceforge.net>
#
# Tests for the crc16 commands
#
# -------------------------------------------------------------------------
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
# -------------------------------------------------------------------------
# RCS: @(#) $Id: crc16.test,v 1.3 2004/01/15 06:36:12 andreas_kupries Exp $
# -------------------------------------------------------------------------
# Initialise the test package
#
if {[lsearch [namespace children] ::tcltest] == -1} {
package require tcltest
namespace import ::tcltest::*
}
# -------------------------------------------------------------------------
# Ensure we test _this_ local copy and not one installed somewhere else.
#
package forget crc16
catch {namespace delete ::crc}
if {[catch {source [file join [file dirname [info script]] crc16.tcl]} msg]} {
puts "skipped [file tail [info script]]: $msg"
return
}
# -------------------------------------------------------------------------
# Setup any constraints
#
# -------------------------------------------------------------------------
# Now the package specific tests....
# -------------------------------------------------------------------------
package require crc16
puts "- crc16 [package present crc16]"
# -------------------------------------------------------------------------
test crc16-1.0 {crc16 with no parameters } {
catch {::crc::crc16} result
string match "wrong # args: *" $result
} {1}
# -------------------------------------------------------------------------
# CRC16 tests
# -------------------------------------------------------------------------
foreach {n msg expected} {
1 ""
"0"
2 "123456789"
"47933"
3 "abc"
"38712"
4 "ABC"
"17697"
5 "This is a string"
"19524"
8 "\uFFFE\u0000\u0001\u0002"
"47537"
} {
test crc16-2.$n {crc16 and unsigned integer} {
list [catch {::crc::crc16 $msg} res] $res
} [list 0 $expected]
}
foreach {n msg expected} {
1 ""
"0x0"
2 "123456789"
"0xBB3D"
3 "abc"
"0x9738"
4 "ABC"
"0x4521"
5 "This is a string"
"0x4C44"
6 "\uFFFE\u0000\u0001\u0002"
"0xB9B1"
} {
test crc16-3.$n {crc16 as hexadecimal string} {
list [catch {::crc::crc16 -format 0x%X $msg} res] $res
} [list 0 $expected]
}
# -------------------------------------------------------------------------
# Implementation tests
# -------------------------------------------------------------------------
set ::crc::testfile [info script]
proc crc::loaddata {filename} {
set f [open $filename r]
fconfigure $f -translation binary
set data [read $f]
close $f
return $data
}
test crc16-4.0 {crc16 file option} {
set r1 [::crc::crc16 -file [info script]]
list [catch {
set r2 [::crc::crc16 [crc::loaddata [info script]]]
if {$r1 != $r2} {
set r "differing results: $r1 != $r2"
} else {
set r ok
}
} result] $result
} {0 ok}
test crc16-4.1 {crc16 channel option} {
set r1 [::crc::crc16 [crc::loaddata $crc::testfile]]
list [catch {
set f [open $crc::testfile r]
set r2 [::crc::crc16 -channel $f]
close $f
if {$r1 != $r2} {
set r "differing results: $r1 != $r2"
} else {
set r ok
}
set r
} result] $result
} {0 ok}
test crc16-5.0 {crc implementation option} {
proc crc::junk {s seed} {
return 0
}
list [catch {::crc::crc16 -impl crc::junk {Hello, World!}} res] $res
} {0 0}
# -------------------------------------------------------------------------
# CRC-CCITT tests
# -------------------------------------------------------------------------
foreach {n msg expected} {
1 ""
"0xFFFF"
2 "123456789"
"0x29B1"
3 "abc"
"0x514A"
4 "ABC"
"0xF508"
5 "This is a string"
"0x4BE9"
8 "\uFFFE\u0000\u0001\u0002"
"0xAAA4"
} {
test crc16-6.$n {crc-ccitt and unsigned integer} {
list [catch {::crc::crc-ccitt -format 0x%X $msg} res] $res
} [list 0 $expected]
}
# -------------------------------------------------------------------------
# CRC32 tests
# -------------------------------------------------------------------------
foreach {n msg expected} {
1 ""
"0x0"
2 "123456789"
"0xCBF43926"
3 "abc"
"0x352441C2"
4 "ABC"
"0xA3830348"
5 "This is a string"
"0x876633F"
8 "\uFFFE\u0000\u0001\u0002"
"0xB0E8EEE5"
} {
test crc16-7.$n {crc-32 from the crc16 algorithms} {
list [catch {::crc::crc-32 -format 0x%X $msg} res] $res
} [list 0 $expected]
}
# -------------------------------------------------------------------------
# XMODEM CRC tests
# -------------------------------------------------------------------------
foreach {n msg expected} {
1 ""
"0x0"
2 "T"
"0x1A71"
3 "123456789"
"0x31C3"
4 "abc"
"0x9DD6"
5 "ABC"
"0x3994"
6 "This is a string"
"0x21E3"
7 "\uFFFE\u0000\u0001\u0002"
"0x2E64"
} {
test crc16-8.$n {XMODEM CRCs as hexadecimal string} {
list [catch {::crc::xmodem -format 0x%X $msg} res] $res
} [list 0 $expected]
}
# -------------------------------------------------------------------------
catch {unset crc::filename}
::tcltest::cleanupTests
# Local Variables:
# mode: tcl
# indent-tabs-mode: nil
# End:
|
