tests/symbol.pure.lisp

   1 ;;;; miscellaneous tests of SYMBOL-related stuff
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (in-package "CL-USER")
  15
  16 ;;; Reported by Paul F. Dietz
  17 (with-test (:name (:symbol :non-simple-string-name))
  18   (let ((sym (make-symbol (make-array '(1) :element-type 'character
  19                                       :adjustable t :initial-contents "X"))))
  20     (assert (simple-string-p (symbol-name sym)))
  21     (print sym (make-broadcast-stream))))
  22
  23 (with-test (:name (gentemp :pprinter))
  24   (let* ((*print-pprint-dispatch* (copy-pprint-dispatch)))
  25     (set-pprint-dispatch 'string
  26                          (lambda (stream obj)
  27                            (declare (ignore obj))
  28                            (write-string "BAR-" stream)))
  29     (assert (string= "FOO-" (gentemp "FOO-") :end2 4))))
  30
  31 (with-test (:name (gensym :fixnum-restriction))
  32   (gensym (1+ most-positive-fixnum)))
  33
  34 ;; lp#1439921
  35 ;; CLHS states that SYMBOL-FUNCTION of a symbol naming a special operator
  36 ;; or macro must return something implementation-defined that might not
  37 ;; be a function. In this implementation it is a function, but it is illegal
  38 ;; to assign that function into another symbol via (SETF FDEFINITION).
  39 (with-test (:name :setf-fdefinition-no-magic-functions)
  40   (assert-error (setf (fdefinition 'mysym) (fdefinition 'and)))
  41   (assert-error (setf (fdefinition 'mysym) (fdefinition 'if)))
  42   (assert-error (setf (symbol-function 'mysym) (symbol-function 'and)))
  43   (assert-error (setf (symbol-function 'mysym) (symbol-function 'if))))
  44
  45 (with-test (:name :macro-guard-function-name)
  46   (do-all-symbols (s)
  47     (when (macro-function s)
  48       (let* ((f (symbol-function s))
  49              (name (sb-kernel:%fun-name f)))
  50         (if (special-operator-p s)
  51             (assert (typep name '(cons (eql :special)
  52                                        (cons symbol null))))
  53             (assert (typep name '(cons (eql :macro)
  54                                        (cons symbol null)))))))))