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2e9fc9fc73
* libguile/print.c (symbol_has_extended_read_syntax): Use a more
general, unicode-appropriate algorithm. Hopefully doesn't cause
any current #{}# cases to be unescaped.
(print_extended_symbol): Use more appropriate unicode algorithm, and
emit unicode hex escapes instead of our own lame escapes.
* test-suite/tests/symbols.test: Add tests.
158 lines
4.4 KiB
Scheme
158 lines
4.4 KiB
Scheme
;;;; symbols.test --- test suite for Guile's symbols -*- scheme -*-
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;;;;
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;;;; Copyright (C) 2001, 2006, 2008, 2009, 2011 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-suite test-symbols)
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#:use-module (test-suite lib)
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#:use-module (ice-9 documentation))
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;;;
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;;; miscellaneous
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;;;
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(define exception:immutable-string
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(cons 'misc-error "^string is read-only"))
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(define (documented? object)
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(not (not (object-documentation object))))
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(define (symbol-length s)
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(string-length (symbol->string s)))
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;;
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;; symbol internals
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;;
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(with-test-prefix "symbol internals"
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(pass-if "length of new symbol same as stringbuf"
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(let ((s 'def))
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(= (symbol-length s) (assq-ref (%symbol-dump s) 'stringbuf-length))))
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(pass-if "contents of new symbol same as stringbuf"
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(let ((s 'ghi))
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(string=? (symbol->string s)
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(assq-ref (%symbol-dump s) 'stringbuf-chars))))
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(with-test-prefix "hashes"
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(pass-if "equal symbols have equal hashes"
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(let ((s1 'mux)
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(s2 'mux))
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(= (assq-ref (%symbol-dump s1) 'hash)
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(assq-ref (%symbol-dump s2) 'hash))))
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(pass-if "different symbols have different hashes"
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(let ((s1 'mux)
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(s2 'muy))
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(not (= (assq-ref (%symbol-dump s1) 'hash)
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(assq-ref (%symbol-dump s2) 'hash))))))
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(with-test-prefix "encodings"
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(pass-if "the null symbol is Latin-1 encoded"
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(let ((s '#{}#))
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(not (assq-ref (%symbol-dump s) 'stringbuf-wide))))
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(pass-if "ASCII symbols are Latin-1 encoded"
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(let ((s 'jkl))
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(not (assq-ref (%symbol-dump s) 'stringbuf-wide))))
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(pass-if "Latin-1 symbols are Latin-1 encoded"
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(let ((s (string->symbol "\xC0\xC1\xC2")))
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(not (assq-ref (%symbol-dump s) 'stringbuf-wide))))
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(pass-if "BMP symbols are UCS-4 encoded"
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(let ((s (string->symbol "\u0100\u0101\x0102")))
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(assq-ref (%symbol-dump s) 'stringbuf-wide)))
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(pass-if "SMP symbols are UCS-4 encoded"
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(let ((s (string->symbol "\U010300\u010301\x010302")))
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(assq-ref (%symbol-dump s) 'stringbuf-wide)))))
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;;;
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;;; symbol?
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;;;
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(with-test-prefix "symbol?"
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(pass-if "documented?"
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(documented? symbol?))
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(pass-if "string"
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(not (symbol? "foo")))
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(pass-if "symbol"
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(symbol? 'foo)))
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;;;
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;;; wide symbols
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;;;
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(with-test-prefix "BMP symbols"
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(pass-if "BMP symbol's string"
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(and (= 4 (string-length "abc\u0100"))
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(string=? "abc\u0100"
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(symbol->string (string->symbol "abc\u0100"))))))
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;;;
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;;; symbol->string
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;;;
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(with-test-prefix "symbol->string"
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(pass-if-exception "result is an immutable string"
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exception:immutable-string
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(string-set! (symbol->string 'abc) 1 #\space)))
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;;;
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;;; gensym
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;;;
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(with-test-prefix "gensym"
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(pass-if "documented?"
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(documented? gensym))
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(pass-if "produces a symbol"
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(symbol? (gensym)))
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(pass-if "produces a fresh symbol"
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(not (eq? (gensym) (gensym))))
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(pass-if "accepts a string prefix"
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(symbol? (gensym "foo")))
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(pass-if-exception "does not accept a symbol prefix"
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exception:wrong-type-arg
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(gensym 'foo))
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(pass-if "accepts long prefices"
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(symbol? (gensym (make-string 4000 #\!))))
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(pass-if "accepts embedded NULs"
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(> (string-length (symbol->string (gensym "foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0foo\0bar\0braz\0"))) 6)))
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(with-test-prefix "extended read syntax"
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(pass-if (equal? "#{}#" (object->string (string->symbol ""))))
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(pass-if (equal? "a" (object->string (string->symbol "a"))))
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(pass-if (equal? "#{a b}#" (object->string (string->symbol "a b"))))
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(pass-if (equal? "#{\\x7d;}#" (object->string (string->symbol "}")))))
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