stringcomp.test

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# Commands covered:  string
#
# 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.
#
# This differs from the original string tests in that the tests call
# things in procs, which uses the compiled string code instead of
# the runtime parse string code.  The tests of import should match
# their equivalent number in string.test.
#
# Copyright (c) 2001 by ActiveState Corporation.
# Copyright (c) 2001 by Kevin B. Kenny.  All rights reserved.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: stringComp.test,v 1.6 2003/02/18 02:25:45 hobbs Exp $

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import -force ::tcltest::*
}

# Some tests require the testobj command

set ::tcltest::testConstraints(testobj) \
	[expr {[info commands testobj] != {}}]

test string-1.1 {error conditions} {
    proc foo {} {string gorp a b}
    list [catch {foo} msg] $msg
} {1 {bad option "gorp": must be bytelength, compare, equal, first, index, is, last, length, map, match, range, repeat, replace, tolower, toupper, totitle, trim, trimleft, trimright, wordend, or wordstart}}
test string-1.2 {error conditions} {
    proc foo {} {string}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string option arg ?arg ...?"}}
test string-1.3 {error condition - undefined method during compile} {
    # We don't want this to complain about 'never' because it may never
    # be called, or string may get redefined.  This must compile OK.
    proc foo {str i} {
        if {"yes" == "no"} { string never called but complains here }
        string index $str $i
    }
    foo abc 0
} a

test string-2.1 {string compare, too few args} {
    proc foo {} {string compare a}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string compare ?-nocase? ?-length int? string1 string2"}}
test string-2.2 {string compare, bad args} {
    proc foo {} {string compare a b c}
    list [catch {foo} msg] $msg
} {1 {bad option "a": must be -nocase or -length}}
test string-2.3 {string compare, bad args} {
    list [catch {string compare -length -nocase str1 str2} msg] $msg
} {1 {expected integer but got "-nocase"}}
test string-2.4 {string compare, too many args} {
    list [catch {string compare -length 10 -nocase str1 str2 str3} msg] $msg
} {1 {wrong # args: should be "string compare ?-nocase? ?-length int? string1 string2"}}
test string-2.5 {string compare with length unspecified} {
    list [catch {string compare -length 10 10} msg] $msg
} {1 {wrong # args: should be "string compare ?-nocase? ?-length int? string1 string2"}}
test string-2.6 {string compare} {
    proc foo {} {string compare abcde abdef}
    foo
} -1
test string-2.7 {string compare, shortest method name} {
    proc foo {} {string c abcde ABCDE}
    foo
} 1
test string-2.8 {string compare} {
    proc foo {} {string compare abcde abcde}
    foo
} 0
test string-2.9 {string compare with length} {
    proc foo {} {string compare -length 2 abcde abxyz}
    foo
} 0
test string-2.10 {string compare with special index} {
    proc foo {} {string compare -length end-3 abcde abxyz}
    list [catch {foo} msg] $msg
} {1 {expected integer but got "end-3"}}
test string-2.11 {string compare, unicode} {
    proc foo {} {string compare ab\u7266 ab\u7267}
    foo
} -1
test string-2.12 {string compare, high bit} {
    # This test will fail if the underlying comparaison
    # is using signed chars instead of unsigned chars.
    # (like SunOS's default memcmp thus the compat/memcmp.c)
    proc foo {} {string compare "\x80" "@"}
    foo
    # Nb this tests works also in utf8 space because \x80 is
    # translated into a 2 or more bytelength but whose first byte has
    # the high bit set.
} 1
test string-2.13 {string compare -nocase} {
    proc foo {} {string compare -nocase abcde abdef}
    foo
} -1
test string-2.14 {string compare -nocase} {
    proc foo {} {string c -nocase abcde ABCDE}
    foo
} 0
test string-2.15 {string compare -nocase} {
    proc foo {} {string compare -nocase abcde abcde}
    foo
} 0
test string-2.16 {string compare -nocase with length} {
    proc foo {} {string compare -length 2 -nocase abcde Abxyz}
    foo
} 0
test string-2.17 {string compare -nocase with length} {
    proc foo {} {string compare -nocase -length 3 abcde Abxyz}
    foo
} -1
test string-2.18 {string compare -nocase with length <= 0} {
    proc foo {} {string compare -nocase -length -1 abcde AbCdEf}
    foo
} -1
test string-2.19 {string compare -nocase with excessive length} {
    proc foo {} {string compare -nocase -length 50 AbCdEf abcde}
    foo
} 1
test string-2.20 {string compare -len unicode} {
    # These are strings that are 6 BYTELENGTH long, but the length
    # shouldn't make a different because there are actually 3 CHARS long
    proc foo {} {string compare -len 5 \334\334\334 \334\334\374}
    foo
} -1
test string-2.21 {string compare -nocase with special index} {
    proc foo {} {string compare -nocase -length end-3 Abcde abxyz}
    list [catch {foo} msg] $msg
} {1 {expected integer but got "end-3"}}
test string-2.22 {string compare, null strings} {
    proc foo {} {string compare "" ""}
    foo
} 0
test string-2.23 {string compare, null strings} {
    proc foo {} {string compare "" foo}
    foo
} -1
test string-2.24 {string compare, null strings} {
    proc foo {} {string compare foo ""}
    foo
} 1
test string-2.25 {string compare -nocase, null strings} {
    proc foo {} {string compare -nocase "" ""}
    foo
} 0
test string-2.26 {string compare -nocase, null strings} {
    proc foo {} {string compare -nocase "" foo}
    foo
} -1
test string-2.27 {string compare -nocase, null strings} {
    proc foo {} {string compare -nocase foo ""}
    foo
} 1
test string-2.28 {string compare with length, unequal strings} {
    proc foo {} {string compare -length 2 abc abde}
    foo
} 0
test string-2.29 {string compare with length, unequal strings} {
    proc foo {} {string compare -length 2 ab abde}
    foo
} 0
test string-2.30 {string compare with NUL character vs. other ASCII} {
    # Be careful here, since UTF-8 rep comparison with memcmp() of
    # these puts chars in the wrong order
    proc foo {} {string compare \x00 \x01}
    foo
} -1
test string-2.31 {string compare, high bit} {
    proc foo {} {string compare "a\x80" "a@"}
    foo
} 1
test string-2.32 {string compare, high bit} {
    proc foo {} {string compare "a\x00" "a\x01"}
    foo
} -1
test string-2.33 {string compare, high bit} {
    proc foo {} {string compare "\x00\x00" "\x00\x01"}
    foo
} -1

# only need a few tests on equal, since it uses the same code as
# string compare, but just modifies the return output
test string-3.1 {string equal} {
    proc foo {} {string equal abcde abdef}
    foo
} 0
test string-3.2 {string equal} {
    proc foo {} {string eq abcde ABCDE}
    foo
} 0
test string-3.3 {string equal} {
    proc foo {} {string equal abcde abcde}
    foo
} 1
test string-3.4 {string equal -nocase} {
    proc foo {} {string equal -nocase \334\334\334\334\374\374\374\374 \334\334\334\334\334\334\334\334}
    foo
} 1
test string-3.5 {string equal -nocase} {
    proc foo {} {string equal -nocase abcde abdef}
    foo
} 0
test string-3.6 {string equal -nocase} {
    proc foo {} {string eq -nocase abcde ABCDE}
    foo
} 1
test string-3.7 {string equal -nocase} {
    proc foo {} {string equal -nocase abcde abcde}
    foo
} 1
test string-3.8 {string equal with length, unequal strings} {
    proc foo {} {string equal -length 2 abc abde}
    foo
} 1

test string-4.1 {string first, too few args} {
    proc foo {} {string first a}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string first subString string ?startIndex?"}}
test string-4.2 {string first, bad args} {
    proc foo {} {string first a b c}
    list [catch {foo} msg] $msg
} {1 {bad index "c": must be integer or end?-integer?}}
test string-4.3 {string first, too many args} {
    proc foo {} {string first a b 5 d}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string first subString string ?startIndex?"}}
test string-4.4 {string first} {
    proc foo {} {string first bq abcdefgbcefgbqrs}
    foo
} 12
test string-4.5 {string first} {
    proc foo {} {string fir bcd abcdefgbcefgbqrs}
    foo
} 1
test string-4.6 {string first} {
    proc foo {} {string f b abcdefgbcefgbqrs}
    foo
} 1
test string-4.7 {string first} {
    proc foo {} {string first xxx x123xx345xxx789xxx012}
    foo
} 9
test string-4.8 {string first} {
    proc foo {} {string first "" x123xx345xxx789xxx012}
    foo
} -1
test string-4.9 {string first, unicode} {
    proc foo {} {string first x abc\u7266x}
    foo
} 4
test string-4.10 {string first, unicode} {
    proc foo {} {string first \u7266 abc\u7266x}
    foo
} 3
test string-4.11 {string first, start index} {
    proc foo {} {string first \u7266 abc\u7266x 3}
    foo
} 3
test string-4.12 {string first, start index} {
    proc foo {} {string first \u7266 abc\u7266x 4}
    foo
} -1
test string-4.13 {string first, start index} {
    proc foo {} {string first \u7266 abc\u7266x end-2}
    foo
} 3
test string-4.14 {string first, negative start index} {
    proc foo {} {string first b abc -1}
    foo
} 1

test string-5.1 {string index} {
    proc foo {} {string index}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string index string charIndex"}}
test string-5.2 {string index} {
    proc foo {} {string index a b c}
    list [catch {foo} msg] $msg
} {1 {wrong # args: should be "string index string charIndex"}}
test string-5.3 {string index} {
    proc foo {} {string index abcde 0}
    foo
} a
test string-5.4 {string index} {
    proc foo {} {string in abcde 4}
    foo
} e
test string-5.5 {string index} {
    proc foo {} {string index abcde 5}
    foo
} {}
test string-5.6 {string index} {
    proc foo {} {string index abcde -10}
    list [catch {foo} msg] $msg
} {0 {}}
test string-5.7 {string index} {
    proc foo {} {string index a xyz}
    list [catch {foo} msg] $msg
} {1 {bad index "xyz": must be integer or end?-integer?}}
test string-5.8 {string index} {
    proc foo {} {string index abc end}
    foo
} c
test string-5.9 {string index} {
    proc foo {} {string index abc end-1}
    foo
} b
test string-5.10 {string index, unicode} {
    proc foo {} {string index abc\u7266d 4}
    foo
} d
test string-5.11 {string index, unicode} {
    proc foo {} {string index abc\u7266d 3}
    foo
} \u7266
test string-5.12 {string index, unicode over char length, under byte length} {
    proc foo {} {string index \334\374\334\374 6}
    foo
} {}
test string-5.13 {string index, bytearray object} {
    proc foo {} {string index [binary format a5 fuz] 0}
    foo
} f
test string-5.14 {string index, bytearray object} {
    proc foo {} {string index [binary format I* {0x50515253 0x52}] 3}
    foo
} S
test string-5.15 {string index, bytearray object} {
    proc foo {} {
	set b [binary format I* {0x50515253 0x52}]
	set i1 [string index $b end-6]
	set i2 [string index $b 1]
	string compare $i1 $i2
    }
    foo
} 0
test string-5.16 {string index, bytearray object with string obj shimmering} {
    proc foo {} {
	set str "0123456789\x00 abcdedfghi"
	binary scan $str H* dump
	string compare [string index $str 10] \x00
    }
    foo
} 0
test string-5.17 {string index, bad integer} {
    proc foo {} {string index "abc" 08}
    list [catch {foo} msg] $msg
} {1 {bad index "08": must be integer or end?-integer? (looks like invalid octal number)}}
test string-5.18 {string index, bad integer} {
    proc foo {} {string index "abc" end-00289}
    list [catch {foo} msg] $msg
} {1 {bad index "end-00289": must be integer or end?-integer? (looks like invalid octal number)}}