;;;; miscellaneous tests of printing stuff ;;;; This software is part of the SBCL system. See the README file for ;;;; more information. ;;;; ;;;; While most of SBCL is derived from the CMU CL system, the test ;;;; files (like this one) were written from scratch after the fork ;;;; from CMU CL. ;;;; ;;;; This software is in the public domain and is provided with ;;;; absolutely no warranty. See the COPYING and CREDITS files for ;;;; more information. (load "assertoid.lisp") (use-package "ASSERTOID") ;;; We should be able to output X readably (at least when *READ-EVAL*). (defun assert-readable-output (x) (assert (eql x (let ((*read-eval* t)) (read-from-string (with-output-to-string (s) (write x :stream s :readably t))))))) ;;; Even when *READ-EVAL* is NIL, we should be able to output some ;;; (not necessarily readable) representation without signalling an ;;; error. (defun assert-unreadable-output (x) (let ((*read-eval* nil)) (with-output-to-string (s) (write x :stream s :readably nil)))) (defun assert-output (x) (assert-readable-output x) (assert-unreadable-output x)) ;;; Nathan Froyd reported that sbcl-0.6.11.34 screwed up output of ;;; floating point infinities. (dolist (x (list short-float-positive-infinity short-float-negative-infinity single-float-positive-infinity single-float-negative-infinity double-float-positive-infinity double-float-negative-infinity long-float-positive-infinity long-float-negative-infinity)) (assert-output x)) ;;; Eric Marsden reported that this would blow up in CMU CL (even ;;; though ANSI says that the mismatch between ~F expected type and ;;; provided string type is supposed to be handled without signalling ;;; an error) and provided a fix which was ported to sbcl-0.6.12.35. (assert (null (format t "~F" "foo"))) ;;; This was a bug in SBCL until 0.6.12.40 (originally reported as a ;;; CMU CL bug by Erik Naggum on comp.lang.lisp). (loop for base from 2 to 36 with *print-radix* = t do (let ((*print-base* base)) (assert (string= "#*101" (format nil "~S" #*101))))) ;;; bug in sbcl-0.7.1.25, reported by DB sbcl-devel 2002-02-25 (assert (string= "0.5" (format nil "~2D" 0.5))) ;;; we want malformed format strings to cause errors rather than have ;;; some DWIM "functionality". (assert (raises-error? (format nil "~:2T"))) ;;; bug reported, with fix, by Robert Strandh, sbcl-devel 2002-03-09, ;;; fixed in sbcl-0.7.1.36: (assert (string= (format nil "~2,3,8,'0$" 1234567.3d0) "1234567.30")) ;;; checks that other FORMAT-DOLLAR output remains sane after the ;;; 0.7.1.36 change (assert (string= (format nil "~$" 0) "0.00")) (assert (string= (format nil "~$" 4) "4.00")) (assert (string= (format nil "~$" -4.0) "-4.00")) (assert (string= (format nil "~2,7,11$" -4.0) "-0000004.00")) (assert (string= (format nil "~2,7,11,' $" 1.1) " 0000001.10")) (assert (string= (format nil "~1,7,11,' $" 1.1) " 0000001.1")) (assert (string= (format nil "~1,3,8,' $" 7.3) " 007.3")) (assert (string= (format nil "~2,3,8,'0$" 7.3) "00007.30")) ;;; Check for symbol lookup in ~/ / directive -- double-colon was ;;; broken in 0.7.1.36 and earlier (defun print-foo (stream arg colonp atsignp &rest params) (declare (ignore colonp atsignp params)) (format stream "~d" arg)) (assert (string= (format nil "~/print-foo/" 2) "2")) (assert (string= (format nil "~/cl-user:print-foo/" 2) "2")) (assert (string= (format nil "~/cl-user::print-foo/" 2) "2")) (assert (raises-error? (format nil "~/cl-user:::print-foo/" 2))) (assert (raises-error? (format nil "~/cl-user:a:print-foo/" 2))) (assert (raises-error? (format nil "~/a:cl-user:print-foo/" 2))) (assert (raises-error? (format nil "~/cl-user:print-foo:print-foo/" 2))) ;;; better make sure that we get this one right, too (defun print-foo\:print-foo (stream arg colonp atsignp &rest params) (declare (ignore colonp atsignp params)) (format stream "~d" arg)) (assert (string= (format nil "~/cl-user:print-foo:print-foo/" 2) "2")) (assert (string= (format nil "~/cl-user::print-foo:print-foo/" 2) "2")) ;;; Check for error detection of illegal directives in a~<..~> justify ;;; block (see ANSI section 22.3.5.2) (assert (raises-error? (format nil "~<~W~>" 'foo))) (assert (raises-error? (format nil "~<~<~A~:>~>" '(foo)))) (assert (string= (format nil "~<~<~A~>~>" 'foo) "FOO")) ;;; Check that arrays that we print while *PRINT-READABLY* is true are ;;; in fact generating similar objects. (assert (equal (array-dimensions (read-from-string (with-output-to-string (s) (let ((*print-readably* t)) (print (make-array '(1 2 0)) s))))) '(1 2 0))) (dolist (array (list (make-array '(1 0 1)) (make-array 0 :element-type nil) (make-array 1 :element-type 'base-char) (make-array 1 :element-type 'character))) (assert (multiple-value-bind (result error) (ignore-errors (read-from-string (with-output-to-string (s) (let ((*print-readably* t)) (print array s))))) ;; it might not be readably-printable (or (typep error 'print-not-readable) (and ;; or else it had better have the same dimensions (equal (array-dimensions result) (array-dimensions array)) ;; and the same element-type (equal (array-element-type result) (array-element-type array))))))) ;;; before 0.8.0.66 it signalled UNBOUND-VARIABLE (write #(1 2 3) :pretty nil :readably t) ;;; another UNBOUND-VARIABLE, this time due to a bug in FORMATTER ;;; expanders. (funcall (formatter "~@<~A~:*~A~:>") nil 3) ;;; the PPC floating point backend was at one point sufficiently ;;; broken that this looped infinitely or caused segmentation ;;; violations through stack corruption. (print 0.0001) ;;; In sbcl-0.8.7, the ~W format directive interpreter implemented the ;;; sense of the colon and at-sign modifiers exactly backwards. ;;; ;;; (Yes, the test for this *is* substantially hairier than the fix; ;;; wanna make something of it?) (cl:in-package :cl-user) (defstruct wexerciser-0-8-7) (defun wexercise-0-8-7-interpreted (wformat) (format t wformat (make-wexerciser-0-8-7))) (defmacro define-compiled-wexercise-0-8-7 (wexercise wformat) `(defun ,wexercise () (declare (optimize (speed 3) (space 1))) (format t ,wformat (make-wexerciser-0-8-7)) (values))) (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-without-atsign "~W") (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-with-atsign "~@W") (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream) (unless (and *print-level* *print-length*) (error "gotcha coming"))) (let ((*print-level* 11) (*print-length* 12)) (wexercise-0-8-7-interpreted "~W") (wexercise-0-8-7-compiled-without-atsign)) (remove-method #'print-object (find-method #'print-object '(:before) (mapcar #'find-class '(wexerciser-0-8-7 t)))) (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream) (when (or *print-level* *print-length*) (error "gotcha going"))) (let ((*print-level* 11) (*print-length* 12)) (wexercise-0-8-7-interpreted "~@W") (wexercise-0-8-7-compiled-with-atsign)) ;;; WRITE-TO-STRING was erroneously DEFKNOWNed as FOLDABLE ;;; ;;; This bug from PFD (defpackage "SCRATCH-WRITE-TO-STRING" (:use)) (with-standard-io-syntax (let* ((*package* (find-package "SCRATCH-WRITE-TO-STRING")) (answer (write-to-string 'scratch-write-to-string::x :readably nil))) (assert (string= answer "X")))) ;;; and a couple from Bruno Haible (defun my-pprint-reverse (out list) (write-char #\( out) (when (setq list (reverse list)) (loop (write (pop list) :stream out) (when (endp list) (return)) (write-char #\Space out))) (write-char #\) out)) (with-standard-io-syntax (let ((*print-pprint-dispatch* (copy-pprint-dispatch))) (set-pprint-dispatch '(cons (member foo)) 'my-pprint-reverse 0) (let ((answer (write-to-string '(foo bar :boo 1) :pretty t :escape t))) (assert (string= answer "(1 :BOO BAR FOO)"))))) (defun my-pprint-logical (out list) (pprint-logical-block (out list :prefix "(" :suffix ")") (when list (loop (write-char #\? out) (write (pprint-pop) :stream out) (write-char #\? out) (pprint-exit-if-list-exhausted) (write-char #\Space out))))) (with-standard-io-syntax (let ((*print-pprint-dispatch* (copy-pprint-dispatch))) (set-pprint-dispatch '(cons (member bar)) 'my-pprint-logical 0) (let ((answer (write-to-string '(bar foo :boo 1) :pretty t :escape t))) (assert (string= answer "(?BAR? ?FOO? ?:BOO? ?1?)"))))) ;;; FORMAT string compile-time checker failure, reported by Thomas ;;; F. Burdick (multiple-value-bind (f w-p f-p) (compile nil '(lambda () (format nil "~{"))) (assert (and w-p f-p)) (assert (nth-value 1 (ignore-errors (funcall f))))) ;;; floating point print/read consistency (let ((x (/ -9.349640046247849d-21 -9.381494249123696d-11))) (let ((y (read-from-string (write-to-string x :readably t)))) (assert (eql x y)))) (let ((x1 (float -5496527/100000000000000000)) (x2 (float -54965272/1000000000000000000))) (assert (or (equal (multiple-value-list (integer-decode-float x1)) (multiple-value-list (integer-decode-float x2))) (string/= (prin1-to-string x1) (prin1-to-string x2))))) ;;; readable printing of arrays with *print-radix* t (let ((*print-radix* t) (*print-readably* t) (*print-pretty* nil)) (let ((output (with-output-to-string (s) (write #2a((t t) (nil nil)) :stream s)))) (assert (equalp (read-from-string output) #2a((t t) (nil nil)))))) ;;; NIL parameters to "interpreted" FORMAT directives (assert (string= (format nil "~v%" nil) (string #\Newline))) ;;; PRINC-TO-STRING should bind print-readably (let ((*print-readably* t)) (assert (string= (princ-to-string #\7) (write-to-string #\7 :escape nil :readably nil)))) ;;; in FORMAT, ~^ inside ~:{ should go to the next case, not break ;;; iteration, even if one argument is just a one-element list. (assert (string= (format nil "~:{~A~^~}" '((A) (C D))) "AC")) ;;; errors should be raised if pprint and justification are mixed ;;; injudiciously... (dolist (x (list "~<~:;~>~_" "~<~:;~>~I" "~<~:;~>~W" "~<~:;~>~:T" "~<~:;~>~<~:>" "~_~<~:;~>" "~I~<~:;~>" "~W~<~:;~>" "~:T~<~:;~>" "~<~:>~<~:;~>")) (assert (raises-error? (format nil x nil))) (assert (raises-error? (format nil (eval `(formatter ,x)) nil)))) ;;; ...but not in judicious cases. (dolist (x (list "~<~;~>~_" "~<~;~>~I" "~<~;~>~W" "~<~;~>~:T" "~<~;~>~<~>" "~_~<~;~>" "~I~<~;~>" "~W~<~;~>" "~:T~<~;~>" "~<~>~<~;~>" "~<~:;~>~T" "~T~<~:;~>")) (assert (format nil x nil)) (assert (format nil (eval `(formatter ,x)) nil))) ;;; bug 350: bignum printing so memory-hungry that heap runs out ;;; -- just don't stall here forever on a slow box (handler-case (with-timeout 10 (print (ash 1 1000000))) (timeout () (print 'timeout!))) ;;; a spot of random-testing for rational printing (defvar *seed-state* (make-random-state)) (prin1 *seed-state*) ; so that we can reproduce errors (let ((seed (make-random-state *seed-state*))) (loop repeat 42 do (let ((n (random (ash 1 1000) seed)) (d (random (ash 1 1000) seed))) (when (zerop (random 2 seed)) (setf n (- n))) (let ((r (/ n d))) (loop for base from 2 to 36 do (let ((*print-base* base) (*read-base* base) (*print-radix* nil)) (assert (= r (read-from-string (prin1-to-string r)))) (if (= 36 base) (decf *read-base*) (incf *read-base*)) (assert (not (eql r (read-from-string (prin1-to-string r))))) (let ((*print-radix* t)) (assert (= r (read-from-string (princ-to-string r))))))))) (write-char #\.) (finish-output))) ;;;; Bugs, found by PFD ;;; NIL parameter for ~^ means `not supplied' (loop for (format arg result) in '(("~:{~D~v^~D~}" ((3 1 4) (1 0 2) (7 nil) (5 nil 6)) "341756") ("~:{~1,2,v^~A~}" ((nil 0) (3 1) (0 2)) "02")) do (assert (string= (funcall #'format nil format arg) result)) do (assert (string= (with-output-to-string (s) (funcall (eval `(formatter ,format)) s arg)) result))) ;;; NIL first parameter for ~R is equivalent to no parameter. (assert (string= (format nil "~VR" nil 5) "five")) (assert (string= (format nil (formatter "~VR") nil 6) "six")) ;;; success (quit :unix-status 104)