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3c7cf7f5c0
* libguile/string.c (scm_string): Restores the functionality where scm_string tests for circular lists * test-suite/tests/strings.test: add test for circular lists
500 lines
15 KiB
Scheme
500 lines
15 KiB
Scheme
;;;; strings.test --- test suite for Guile's string functions -*- scheme -*-
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;;;; Jim Blandy <jimb@red-bean.com> --- August 1999
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;;;;
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;;;; Copyright (C) 1999, 2001, 2004, 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
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;;;;
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at your option) any later version.
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;;;;
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;;;; This library is distributed in the hope that it will be useful,
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;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;;;; Lesser General Public License for more details.
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;;;;
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;;;; You should have received a copy of the GNU Lesser General Public
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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(define-module (test-strings)
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#:use-module (test-suite lib))
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(define exception:read-only-string
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(cons 'misc-error "^string is read-only"))
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(define exception:illegal-escape
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(cons 'read-error "illegal character in escape sequence"))
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;; Create a string from integer char values, eg. (string-ints 65) => "A"
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(define (string-ints . args)
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(apply string (map integer->char args)))
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;;
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;; string internals
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;;
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;; Some abbreviations
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;; BMP - Basic Multilingual Plane (codepoints below U+FFFF)
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;; SMP - Suplementary Multilingual Plane (codebpoints from U+10000 to U+1FFFF)
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(with-test-prefix "string internals"
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(pass-if "new string starts at 1st char in stringbuf"
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(let ((s "abc"))
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(= 0 (assq-ref (%string-dump s) 'start))))
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(pass-if "length of new string same as stringbuf"
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(let ((s "def"))
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(= (string-length s) (assq-ref (%string-dump s) 'stringbuf-length))))
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(pass-if "contents of new string same as stringbuf"
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(let ((s "ghi"))
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(string=? s (assq-ref (%string-dump s) 'stringbuf-chars))))
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(pass-if "writable strings are not read-only"
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(let ((s "zyx"))
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(not (assq-ref (%string-dump s) 'read-only))))
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(pass-if "read-only strings are read-only"
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(let ((s (substring/read-only "zyx" 0)))
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(assq-ref (%string-dump s) 'read-only)))
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(pass-if "null strings are inlined"
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(let ((s ""))
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(assq-ref (%string-dump s) 'stringbuf-inline)))
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(pass-if "short Latin-1 encoded strings are inlined"
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(let ((s "m"))
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(assq-ref (%string-dump s) 'stringbuf-inline)))
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(pass-if "long Latin-1 encoded strings are not inlined"
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(let ((s "0123456789012345678901234567890123456789"))
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(not (assq-ref (%string-dump s) 'stringbuf-inline))))
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(pass-if "short UCS-4 encoded strings are not inlined"
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(let ((s "\u0100"))
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(not (assq-ref (%string-dump s) 'stringbuf-inline))))
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(pass-if "long UCS-4 encoded strings are not inlined"
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(let ((s "\u010012345678901234567890123456789"))
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(not (assq-ref (%string-dump s) 'stringbuf-inline))))
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(pass-if "new Latin-1 encoded strings are not shared"
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(let ((s "abc"))
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(not (assq-ref (%string-dump s) 'stringbuf-shared))))
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(pass-if "new UCS-4 encoded strings are not shared"
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(let ((s "\u0100bc"))
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(not (assq-ref (%string-dump s) 'stringbuf-shared))))
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;; Should this be true? It isn't currently true.
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(pass-if "null shared substrings are shared"
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(let* ((s1 "")
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(s2 (substring/shared s1 0 0)))
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(throw 'untested)
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(eq? (assq-ref (%string-dump s2) 'shared)
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s1)))
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(pass-if "ASCII shared substrings are shared"
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(let* ((s1 "foobar")
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(s2 (substring/shared s1 0 3)))
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(eq? (assq-ref (%string-dump s2) 'shared)
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s1)))
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(pass-if "BMP shared substrings are shared"
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(let* ((s1 "\u0100\u0101\u0102\u0103\u0104\u0105")
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(s2 (substring/shared s1 0 3)))
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(eq? (assq-ref (%string-dump s2) 'shared)
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s1)))
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(pass-if "null substrings are not shared"
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(let* ((s1 "")
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(s2 (substring s1 0 0)))
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(not (eq? (assq-ref (%string-dump s2) 'shared)
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s1))))
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(pass-if "ASCII substrings are not shared"
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(let* ((s1 "foobar")
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(s2 (substring s1 0 3)))
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(not (eq? (assq-ref (%string-dump s2) 'shared)
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s1))))
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(pass-if "BMP substrings are not shared"
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(let* ((s1 "\u0100\u0101\u0102\u0103\u0104\u0105")
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(s2 (substring s1 0 3)))
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(not (eq? (assq-ref (%string-dump s2) 'shared)
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s1))))
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(pass-if "ASCII substrings share stringbufs before copy-on-write"
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(let* ((s1 "foobar")
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(s2 (substring s1 0 3)))
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(assq-ref (%string-dump s1) 'stringbuf-shared)))
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(pass-if "BMP substrings share stringbufs before copy-on-write"
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(let* ((s1 "\u0100\u0101\u0102\u0103\u0104\u0105")
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(s2 (substring s1 0 3)))
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(assq-ref (%string-dump s1) 'stringbuf-shared)))
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(pass-if "ASCII substrings don't share stringbufs after copy-on-write"
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(let* ((s1 "foobar")
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(s2 (substring s1 0 3)))
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(string-set! s2 0 #\F)
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(not (assq-ref (%string-dump s2) 'stringbuf-shared))))
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(pass-if "BMP substrings don't share stringbufs after copy-on-write"
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(let* ((s1 "\u0100\u0101\u0102\u0103\u0104\u0105")
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(s2 (substring s1 0 3)))
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(string-set! s2 0 #\F)
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(not (assq-ref (%string-dump s2) 'stringbuf-shared))))
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(with-test-prefix "encodings"
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(pass-if "null strings are Latin-1 encoded"
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(let ((s ""))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "ASCII strings are Latin-1 encoded"
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(let ((s "jkl"))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "Latin-1 strings are Latin-1 encoded"
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(let ((s "\xC0\xC1\xC2"))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "BMP strings are UCS-4 encoded"
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(let ((s "\u0100\u0101\x0102"))
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(assq-ref (%string-dump s) 'stringbuf-wide)))
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(pass-if "SMP strings are UCS-4 encoded"
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(let ((s "\U010300\u010301\x010302"))
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(assq-ref (%string-dump s) 'stringbuf-wide)))
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(pass-if "null list->string is Latin-1 encoded"
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(let ((s (string-ints)))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "ASCII list->string is Latin-1 encoded"
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(let ((s (string-ints 65 66 67)))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "Latin-1 list->string is Latin-1 encoded"
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(let ((s (string-ints #xc0 #xc1 #xc2)))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))
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(pass-if "BMP list->string is UCS-4 encoded"
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(let ((s (string-ints #x0100 #x0101 #x0102)))
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(assq-ref (%string-dump s) 'stringbuf-wide)))
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(pass-if "SMP list->string is UCS-4 encoded"
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(let ((s (string-ints #x010300 #x010301 #x010302)))
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(assq-ref (%string-dump s) 'stringbuf-wide)))
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(pass-if "encoding of string not based on escape style"
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(let ((s "\U000040"))
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(not (assq-ref (%string-dump s) 'stringbuf-wide))))))
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(with-test-prefix "hex escapes"
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(pass-if-exception "non-hex char in two-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\x0g\"" read))
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(pass-if-exception "non-hex char in four-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\u000g\"" read))
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(pass-if-exception "non-hex char in six-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\U00000g\"" read))
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(pass-if-exception "premature termination of two-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\x0\"" read))
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(pass-if-exception "premature termination of four-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\u000\"" read))
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(pass-if-exception "premature termination of six-digit hex-escape"
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exception:illegal-escape
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(with-input-from-string "\"\\U00000\"" read))
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(pass-if "extra hex digits ignored for two-digit hex escape"
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(eqv? (string-ref "--\xfff--" 2)
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(integer->char #xff)))
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(pass-if "extra hex digits ignored for four-digit hex escape"
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(eqv? (string-ref "--\u0100f--" 2)
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(integer->char #x0100)))
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(pass-if "extra hex digits ignored for six-digit hex escape"
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(eqv? (string-ref "--\U010300f--" 2)
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(integer->char #x010300)))
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(pass-if "escaped characters match non-escaped ASCII characters"
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(string=? "ABC" "\x41\u0042\U000043")))
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;;
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;; string=?
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;;
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(with-test-prefix "string=?"
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(pass-if "respects 1st parameter's string length"
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(not (string=? "foo\0" "foo")))
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(pass-if "respects 2nd paramter's string length"
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(not (string=? "foo" "foo\0")))
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(with-test-prefix "wrong argument type"
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(pass-if-exception "1st argument symbol"
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exception:wrong-type-arg
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(string=? 'a "a"))
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(pass-if-exception "2nd argument symbol"
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exception:wrong-type-arg
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(string=? "a" 'b))))
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;;
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;; string<?
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;;
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(with-test-prefix "string<?"
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(pass-if "respects string length"
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(and (not (string<? "foo\0a" "foo\0a"))
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(string<? "foo\0a" "foo\0b")))
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(with-test-prefix "wrong argument type"
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(pass-if-exception "1st argument symbol"
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exception:wrong-type-arg
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(string<? 'a "a"))
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(pass-if-exception "2nd argument symbol"
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exception:wrong-type-arg
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(string<? "a" 'b)))
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(pass-if "same as char<?"
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(eq? (char<? (integer->char 0) (integer->char 255))
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(string<? (string-ints 0) (string-ints 255)))))
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;;
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;; string-ci<?
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;;
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(with-test-prefix "string-ci<?"
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(pass-if "respects string length"
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(and (not (string-ci<? "foo\0a" "foo\0a"))
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(string-ci<? "foo\0a" "foo\0b")))
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(with-test-prefix "wrong argument type"
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(pass-if-exception "1st argument symbol"
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exception:wrong-type-arg
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(string-ci<? 'a "a"))
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(pass-if-exception "2nd argument symbol"
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exception:wrong-type-arg
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(string-ci<? "a" 'b)))
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(pass-if "same as char-ci<?"
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(eq? (char-ci<? (integer->char 0) (integer->char 255))
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(string-ci<? (string-ints 0) (string-ints 255)))))
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;;
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;; string<=?
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;;
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(with-test-prefix "string<=?"
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(pass-if "same as char<=?"
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(eq? (char<=? (integer->char 0) (integer->char 255))
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(string<=? (string-ints 0) (string-ints 255)))))
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;;
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;; string-ci<=?
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;;
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(with-test-prefix "string-ci<=?"
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(pass-if "same as char-ci<=?"
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(eq? (char-ci<=? (integer->char 0) (integer->char 255))
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(string-ci<=? (string-ints 0) (string-ints 255)))))
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;;
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;; string>?
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;;
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(with-test-prefix "string>?"
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(pass-if "same as char>?"
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(eq? (char>? (integer->char 0) (integer->char 255))
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(string>? (string-ints 0) (string-ints 255)))))
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;;
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;; string-ci>?
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;;
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(with-test-prefix "string-ci>?"
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(pass-if "same as char-ci>?"
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(eq? (char-ci>? (integer->char 0) (integer->char 255))
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(string-ci>? (string-ints 0) (string-ints 255)))))
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;;
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;; string>=?
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;;
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(with-test-prefix "string>=?"
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(pass-if "same as char>=?"
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(eq? (char>=? (integer->char 0) (integer->char 255))
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(string>=? (string-ints 0) (string-ints 255)))))
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;;
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;; string-ci>=?
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;;
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(with-test-prefix "string-ci>=?"
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(pass-if "same as char-ci>=?"
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(eq? (char-ci>=? (integer->char 0) (integer->char 255))
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(string-ci>=? (string-ints 0) (string-ints 255)))))
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;;
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;; string-ref
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;;
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(with-test-prefix "string-ref"
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(pass-if-exception "empty string"
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exception:out-of-range
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(string-ref "" 0))
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(pass-if-exception "empty string and non-zero index"
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exception:out-of-range
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(string-ref "" 123))
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(pass-if-exception "out of range"
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exception:out-of-range
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(string-ref "hello" 123))
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(pass-if-exception "negative index"
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exception:out-of-range
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(string-ref "hello" -1))
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(pass-if "regular string, ASCII char"
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(char=? (string-ref "GNU Guile" 4) #\G))
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(pass-if "regular string, hex escaped Latin-1 char"
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(char=? (string-ref "--\xff--" 2)
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(integer->char #xff)))
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(pass-if "regular string, hex escaped BMP char"
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(char=? (string-ref "--\u0100--" 2)
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(integer->char #x0100)))
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(pass-if "regular string, hex escaped SMP char"
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(char=? (string-ref "--\U010300--" 2)
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(integer->char #x010300))))
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;;
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;; string-set!
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;;
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(with-test-prefix "string-set!"
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(pass-if-exception "empty string"
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exception:out-of-range
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(string-set! (string-copy "") 0 #\x))
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(pass-if-exception "empty string and non-zero index"
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exception:out-of-range
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(string-set! (string-copy "") 123 #\x))
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(pass-if-exception "out of range"
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exception:out-of-range
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(string-set! (string-copy "hello") 123 #\x))
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(pass-if-exception "negative index"
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exception:out-of-range
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(string-set! (string-copy "hello") -1 #\x))
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(pass-if-exception "read-only string"
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exception:read-only-string
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(string-set! (substring/read-only "abc" 0) 1 #\space))
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(pass-if "regular string, ASCII char"
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(let ((s (string-copy "GNU guile")))
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(string-set! s 4 #\G)
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(char=? (string-ref s 4) #\G)))
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(pass-if "regular string, Latin-1 char"
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(let ((s (string-copy "GNU guile")))
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(string-set! s 4 (integer->char #xfe))
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(char=? (string-ref s 4) (integer->char #xfe))))
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(pass-if "regular string, BMP char"
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(let ((s (string-copy "GNU guile")))
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(string-set! s 4 (integer->char #x0100))
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(char=? (string-ref s 4) (integer->char #x0100))))
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(pass-if "regular string, SMP char"
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(let ((s (string-copy "GNU guile")))
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(string-set! s 4 (integer->char #x010300))
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(char=? (string-ref s 4) (integer->char #x010300)))))
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;;
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;; list->string
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;;
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(with-test-prefix "string"
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(pass-if-exception "convert circular list to string"
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exception:wrong-type-arg
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(let ((foo (list #\a #\b #\c)))
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(set-cdr! (cddr foo) (cdr foo))
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(apply string foo))))
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(with-test-prefix "string-split"
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;; in guile 1.6.7 and earlier, character >=128 wasn't matched in the string
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(pass-if "char 255"
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(equal? '("a" "b")
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(string-split (string #\a (integer->char 255) #\b)
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(integer->char 255)))))
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(with-test-prefix "substring-move!"
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(pass-if-exception "substring-move! checks start and end correctly"
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exception:out-of-range
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(substring-move! "sample" 3 0 "test" 3)))
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(with-test-prefix "substring/shared"
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(pass-if "modify indirectly"
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(let ((str (string-copy "foofoofoo")))
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(string-upcase! (substring/shared str 3 6))
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(string=? str "fooFOOfoo")))
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(pass-if "modify cow indirectly"
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(let* ((str1 (string-copy "foofoofoo"))
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(str2 (string-copy str1)))
|
|
(string-upcase! (substring/shared str2 3 6))
|
|
(and (string=? str1 "foofoofoo")
|
|
(string=? str2 "fooFOOfoo"))))
|
|
|
|
(pass-if "modify double indirectly"
|
|
(let* ((str1 (string-copy "foofoofoo"))
|
|
(str2 (substring/shared str1 2 7)))
|
|
(string-upcase! (substring/shared str2 1 4))
|
|
(string=? str1 "fooFOOfoo")))
|
|
|
|
(pass-if "modify cow double indirectly"
|
|
(let* ((str1 "foofoofoo")
|
|
(str2 (substring str1 2 7)))
|
|
(string-upcase! (substring/shared str2 1 4))
|
|
(and (string=? str1 "foofoofoo")
|
|
(string=? str2 "oFOOf")))))
|