tests/print.impure.lisp

   1 ;;;; miscellaneous tests of printing 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 (load "assertoid.lisp")
  15 (use-package "ASSERTOID")
  16
  17 ;;; We should be able to output X readably (at least when *READ-EVAL*).
  18 (defun assert-readable-output (x)
  19   (assert (eql x
  20                (let ((*read-eval* t))
  21                  (read-from-string (with-output-to-string (s)
  22                                      (write x :stream s :readably t)))))))
  23
  24 ;;; Even when *READ-EVAL* is NIL, we should be able to output some
  25 ;;; (not necessarily readable) representation without signalling an
  26 ;;; error.
  27 (defun assert-unreadable-output (x)
  28   (let ((*read-eval* nil))
  29     (with-output-to-string (s) (write x :stream s :readably nil))))
  30
  31 (defun assert-output (x)
  32   (assert-readable-output x)
  33   (assert-unreadable-output x))
  34
  35 ;;; Nathan Froyd reported that sbcl-0.6.11.34 screwed up output of
  36 ;;; floating point infinities.
  37 (dolist (x (list short-float-positive-infinity short-float-negative-infinity
  38                  single-float-positive-infinity single-float-negative-infinity
  39                  double-float-positive-infinity double-float-negative-infinity
  40                  long-float-positive-infinity long-float-negative-infinity))
  41   (assert-output x))
  42
  43 ;;; Eric Marsden reported that this would blow up in CMU CL (even
  44 ;;; though ANSI says that the mismatch between ~F expected type and
  45 ;;; provided string type is supposed to be handled without signalling
  46 ;;; an error) and provided a fix which was ported to sbcl-0.6.12.35.
  47 (assert (null (format t "~F" "foo")))
  48
  49 ;;; This was a bug in SBCL until 0.6.12.40 (originally reported as a
  50 ;;; CMU CL bug by Erik Naggum on comp.lang.lisp).
  51 (loop for base from 2 to 36
  52       with *print-radix* = t
  53       do (let ((*print-base* base))
  54            (assert (string= "#*101" (format nil "~S" #*101)))))
  55
  56 ;;; bug in sbcl-0.7.1.25, reported by DB sbcl-devel 2002-02-25
  57 (assert (string= "0.5" (format nil "~2D" 0.5)))
  58
  59 ;;; we want malformed format strings to cause errors rather than have
  60 ;;; some DWIM "functionality".
  61 (assert (raises-error? (format nil "~:2T")))
  62
  63 ;;; bug reported, with fix, by Robert Strandh, sbcl-devel 2002-03-09,
  64 ;;; fixed in sbcl-0.7.1.36:
  65 (assert (string= (format nil "~2,3,8,'0$" 1234567.3d0) "1234567.30"))
  66
  67 ;;; checks that other FORMAT-DOLLAR output remains sane after the
  68 ;;; 0.7.1.36 change
  69 (assert (string= (format nil "~$" 0) "0.00"))
  70 (assert (string= (format nil "~$" 4) "4.00"))
  71 (assert (string= (format nil "~$" -4.0) "-4.00"))
  72 (assert (string= (format nil "~2,7,11$" -4.0) "-0000004.00"))
  73 (assert (string= (format nil "~2,7,11,' $" 1.1) " 0000001.10"))
  74 (assert (string= (format nil "~1,7,11,' $" 1.1) "  0000001.1"))
  75 (assert (string= (format nil "~1,3,8,' $" 7.3) "   007.3"))
  76 (assert (string= (format nil "~2,3,8,'0$" 7.3) "00007.30"))
  77
  78 ;;; Check for symbol lookup in ~/ / directive -- double-colon was
  79 ;;; broken in 0.7.1.36 and earlier
  80 (defun print-foo (stream arg colonp atsignp &rest params)
  81   (declare (ignore colonp atsignp params))
  82   (format stream "~d" arg))
  83
  84 (assert (string= (format nil "~/print-foo/" 2) "2"))
  85 (assert (string= (format nil "~/cl-user:print-foo/" 2) "2"))
  86 (assert (string= (format nil "~/cl-user::print-foo/" 2) "2"))
  87 (assert (raises-error? (format nil "~/cl-user:::print-foo/" 2)))
  88 (assert (raises-error? (format nil "~/cl-user:a:print-foo/" 2)))
  89 (assert (raises-error? (format nil "~/a:cl-user:print-foo/" 2)))
  90 (assert (raises-error? (format nil "~/cl-user:print-foo:print-foo/" 2)))
  91
  92 ;;; better make sure that we get this one right, too
  93 (defun print-foo\:print-foo (stream arg colonp atsignp &rest params)
  94   (declare (ignore colonp atsignp params))
  95   (format stream "~d" arg))
  96
  97 (assert (string= (format nil "~/cl-user:print-foo:print-foo/" 2) "2"))
  98 (assert (string= (format nil "~/cl-user::print-foo:print-foo/" 2) "2"))
  99
 100 ;;; Check for error detection of illegal directives in a~<..~> justify
 101 ;;; block (see ANSI section 22.3.5.2)
 102 (assert (raises-error? (format nil "~<~W~>" 'foo)))
 103 (assert (raises-error? (format nil "~<~<~A~:>~>" '(foo))))
 104 (assert (string= (format nil "~<~<~A~>~>" 'foo) "FOO"))
 105
 106 (with-test (:name (:format :justification-atsign-check))
 107   (assert (raises-error? (format nil "~<~@>")))
 108   (assert (raises-error? (eval '(format nil "~<~@>")))))
 109
 110 ;;; Check that arrays that we print while *PRINT-READABLY* is true are
 111 ;;; in fact generating similar objects.
 112 (assert (equal (array-dimensions
 113                 (read-from-string
 114                  (with-output-to-string (s)
 115                    (let ((*print-readably* t))
 116                      (print (make-array '(1 2 0)) s)))))
 117                '(1 2 0)))
 118
 119 (dolist (array (list (make-array '(1 0 1))
 120                      (make-array 0 :element-type nil)
 121                      (make-array 1 :element-type 'base-char)
 122                      (make-array 1 :element-type 'character)))
 123   (assert (multiple-value-bind (result error)
 124               (ignore-errors (read-from-string
 125                               (with-output-to-string (s)
 126                                 (let ((*print-readably* t))
 127                                   (print array s)))))
 128             ;; it might not be readably-printable
 129             (or (typep error 'print-not-readable)
 130                 (and
 131                  ;; or else it had better have the same dimensions
 132                  (equal (array-dimensions result) (array-dimensions array))
 133                  ;; and the same element-type
 134                  (equal (array-element-type result) (array-element-type array)))))))
 135
 136 ;;; before 0.8.0.66 it signalled UNBOUND-VARIABLE
 137 (write #(1 2 3) :pretty nil :readably t)
 138
 139 ;;; another UNBOUND-VARIABLE, this time due to a bug in FORMATTER
 140 ;;; expanders.
 141 (funcall (formatter "~@<~A~:*~A~:>") nil 3)
 142
 143 ;;; the PPC floating point backend was at one point sufficiently
 144 ;;; broken that this looped infinitely or caused segmentation
 145 ;;; violations through stack corruption.
 146 (print 0.0001)
 147
 148 ;;; In sbcl-0.8.7, the ~W format directive interpreter implemented the
 149 ;;; sense of the colon and at-sign modifiers exactly backwards.
 150 ;;;
 151 ;;; (Yes, the test for this *is* substantially hairier than the fix;
 152 ;;; wanna make something of it?)
 153 (cl:in-package :cl-user)
 154 (defstruct wexerciser-0-8-7)
 155 (defun wexercise-0-8-7-interpreted (wformat)
 156   (format t wformat (make-wexerciser-0-8-7)))
 157 (defmacro define-compiled-wexercise-0-8-7 (wexercise wformat)
 158   `(defun ,wexercise ()
 159     (declare (optimize (speed 3) (space 1)))
 160     (format t ,wformat (make-wexerciser-0-8-7))
 161     (values)))
 162 (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-without-atsign "~W")
 163 (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-with-atsign "~@W")
 164 (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream)
 165   (unless (and *print-level* *print-length*)
 166     (error "gotcha coming")))
 167 (let ((*print-level* 11)
 168       (*print-length* 12))
 169   (wexercise-0-8-7-interpreted "~W")
 170   (wexercise-0-8-7-compiled-without-atsign))
 171 (remove-method #'print-object
 172                (find-method #'print-object
 173                             '(:before)
 174                             (mapcar #'find-class '(wexerciser-0-8-7 t))))
 175 (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream)
 176   (when (or *print-level* *print-length*)
 177     (error "gotcha going")))
 178 (let ((*print-level* 11)
 179       (*print-length* 12))
 180   (wexercise-0-8-7-interpreted "~@W")
 181   (wexercise-0-8-7-compiled-with-atsign))
 182 \f
 183 ;;; WRITE-TO-STRING was erroneously DEFKNOWNed as FOLDABLE
 184 ;;;
 185 ;;; This bug from PFD
 186 (defpackage "SCRATCH-WRITE-TO-STRING" (:use))
 187 (with-standard-io-syntax
 188   (let* ((*package* (find-package "SCRATCH-WRITE-TO-STRING"))
 189          (answer (write-to-string 'scratch-write-to-string::x :readably nil)))
 190     (assert (string= answer "X"))))
 191 ;;; and a couple from Bruno Haible
 192 (defun my-pprint-reverse (out list)
 193   (write-char #\( out)
 194   (when (setq list (reverse list))
 195     (loop
 196      (write (pop list) :stream out)
 197      (when (endp list) (return))
 198      (write-char #\Space out)))
 199   (write-char #\) out))
 200 (with-standard-io-syntax
 201   (let ((*print-pprint-dispatch* (copy-pprint-dispatch)))
 202     (set-pprint-dispatch '(cons (member foo)) 'my-pprint-reverse 0)
 203     (let ((answer (write-to-string '(foo bar :boo 1) :pretty t :escape t)))
 204       (assert (string= answer "(1 :BOO BAR FOO)")))))
 205 (defun my-pprint-logical (out list)
 206   (pprint-logical-block (out list :prefix "(" :suffix ")")
 207     (when list
 208       (loop
 209        (write-char #\? out)
 210        (write (pprint-pop) :stream out)
 211        (write-char #\? out)
 212        (pprint-exit-if-list-exhausted)
 213        (write-char #\Space out)))))
 214 (with-standard-io-syntax
 215   (let ((*print-pprint-dispatch* (copy-pprint-dispatch)))
 216     (set-pprint-dispatch '(cons (member bar)) 'my-pprint-logical 0)
 217     (let ((answer (write-to-string '(bar foo :boo 1) :pretty t :escape t)))
 218       (assert (string= answer "(?BAR? ?FOO? ?:BOO? ?1?)")))))
 219
 220 ;;; FORMAT string compile-time checker failure, reported by Thomas
 221 ;;; F. Burdick
 222 (multiple-value-bind (f w-p f-p)
 223     (compile nil '(lambda () (format nil "~{")))
 224   (assert (and w-p f-p))
 225   (assert (nth-value 1 (ignore-errors (funcall f)))))
 226
 227 ;;; floating point print/read consistency
 228 (let ((x (/ -9.349640046247849d-21 -9.381494249123696d-11)))
 229   (let ((y (read-from-string (write-to-string x :readably t))))
 230     (assert (eql x y))))
 231
 232 (let ((x1 (float -5496527/100000000000000000))
 233       (x2 (float -54965272/1000000000000000000)))
 234   (assert (or (equal (multiple-value-list (integer-decode-float x1))
 235                      (multiple-value-list (integer-decode-float x2)))
 236               (string/= (prin1-to-string x1) (prin1-to-string x2)))))
 237
 238 ;;; readable printing of arrays with *print-radix* t
 239 (let ((*print-radix* t)
 240       (*print-readably* t)
 241       (*print-pretty* nil))
 242   (let ((output (with-output-to-string (s)
 243                   (write #2a((t t) (nil nil)) :stream s))))
 244     (assert (equalp (read-from-string output) #2a((t t) (nil nil))))))
 245
 246 ;;; NIL parameters to "interpreted" FORMAT directives
 247 (assert (string= (format nil "~v%" nil) (string #\Newline)))
 248
 249 ;;; PRINC-TO-STRING should bind print-readably
 250 (let ((*print-readably* t))
 251   (assert (string= (princ-to-string #\7)
 252                    (write-to-string #\7 :escape nil :readably nil))))
 253
 254 ;;; in FORMAT, ~^ inside ~:{ should go to the next case, not break
 255 ;;; iteration, even if one argument is just a one-element list.
 256 (assert (string= (format nil "~:{~A~^~}" '((A) (C D))) "AC"))
 257
 258 ;;; errors should be raised if pprint and justification are mixed
 259 ;;; injudiciously...
 260 (dolist (x (list "~<~:;~>~_" "~<~:;~>~I" "~<~:;~>~W"
 261                  "~<~:;~>~:T" "~<~:;~>~<~:>" "~_~<~:;~>"
 262                  "~I~<~:;~>" "~W~<~:;~>" "~:T~<~:;~>" "~<~:>~<~:;~>"))
 263   (assert (raises-error? (format nil x nil)))
 264   (assert (raises-error? (format nil (eval `(formatter ,x)) nil))))
 265 ;;; ...but not in judicious cases.
 266 (dolist (x (list "~<~;~>~_" "~<~;~>~I" "~<~;~>~W"
 267                  "~<~;~>~:T" "~<~;~>~<~>" "~_~<~;~>"
 268                  "~I~<~;~>" "~W~<~;~>" "~:T~<~;~>" "~<~>~<~;~>"
 269                  "~<~:;~>~T" "~T~<~:;~>"))
 270   (assert (format nil x nil))
 271   (assert (format nil (eval `(formatter ,x)) nil)))
 272
 273 ;;; bug 350: bignum printing so memory-hungry that heap runs out
 274 ;;; -- just don't stall here forever on a slow box
 275 (with-test (:name bug-350)
 276   (handler-case
 277       (with-timeout 10
 278         (print (ash 1 1000000)))
 279     (timeout ()
 280       (print 'timeout!))))
 281
 282 ;;; bug 371: bignum print/read inconsistency
 283 (defvar *bug-371* -7043009959286724629649270926654940933664689003233793014518979272497911394287216967075767325693021717277238746020477538876750544587281879084559996466844417586093291189295867052594478662802691926547232838591510540917276694295393715934079679531035912244103731582711556740654671309980075069010778644542022/670550434139267031632063192770201289106737062379324644110801846820471752716238484923370056920388400273070254958650831435834503195629325418985020030706879602898158806736813101434594805676212779217311897830937606064579213895527844045511878668289820732425014254579493444623868748969110751636786165152601)
 284 (let ((*print-base* 5)
 285       (*read-base* 5)
 286       (*print-radix* nil))
 287   (assert (= *bug-371* (read-from-string (prin1-to-string *bug-371*)))))
 288
 289 ;;; a spot of random-testing for rational printing
 290 (defvar *seed-state* (make-random-state))
 291 (print *seed-state*) ; so that we can reproduce errors
 292 (let ((seed (make-random-state *seed-state*)))
 293   (loop repeat 42
 294      do (let ((n (random (ash 1 1000) seed))
 295               (d (random (ash 1 1000) seed)))
 296           (when (zerop (random 2 seed))
 297             (setf n (- n)))
 298           (let ((r (/ n d)))
 299             (loop for base from 2 to 36
 300                do (let ((*print-base* base)
 301                         (*read-base* base)
 302                         (*print-radix* nil))
 303                     (assert (= r (read-from-string (prin1-to-string r))))
 304                     (if (= 36 base)
 305                         (decf *read-base*)
 306                         (incf *read-base*))
 307                     (assert (not (eql r (read-from-string (prin1-to-string r)))))
 308                     (let ((*print-radix* t))
 309                       (assert (= r (read-from-string
 310                                     (princ-to-string r)))))))))
 311        (write-char #\.)
 312        (finish-output)))
 313
 314 ;;;; Bugs, found by PFD
 315 ;;; NIL parameter for ~^ means `not supplied'
 316 (loop for (format arg result) in
 317       '(("~:{~D~v^~D~}" ((3 1 4) (1 0 2) (7 nil) (5 nil 6)) "341756")
 318         ("~:{~1,2,v^~A~}" ((nil 0) (3 1) (0 2)) "02"))
 319       do (assert (string= (funcall #'format nil format arg) result))
 320       do (assert (string= (with-output-to-string (s)
 321                             (funcall (eval `(formatter ,format)) s arg))
 322                           result)))
 323
 324 ;;; NIL first parameter for ~R is equivalent to no parameter.
 325 (assert (string= (format nil "~VR" nil 5) "five"))
 326 (assert (string= (format nil (formatter "~VR") nil 6) "six"))
 327
 328 ;;; CSR inserted a bug into Burger & Dybvig's float printer.  Caught
 329 ;;; by Raymond Toy
 330 (assert (string= (format nil "~E" 1d23) "1.d+23"))
 331
 332 ;;; Fixed-format bugs from CLISP's test suite (reported by Bruno
 333 ;;; Haible, bug 317)
 334 (assert (string= (format nil "~1F" 10) "10."))
 335 (assert (string= (format nil "~0F" 10) "10."))
 336 (assert (string= (format nil "~2F" 1234567.1) "1234567."))
 337
 338 ;;; here's one that seems to fail most places.  I think this is right,
 339 ;;; and most of the other answers I've seen are definitely wrong.
 340 (assert (string= (format nil "~G" 1d23) "100000000000000000000000.    "))
 341
 342 ;;; Adam Warner's test case
 343 (assert (string= (format nil "~@F" 1.23) "+1.23"))
 344
 345
 346 ;;; New (2005-11-08, also known as CSR House day) float format test
 347 ;;; cases.  Simon Alexander, Raymond Toy, and others
 348 (assert (string= (format nil "~9,4,,-7E" pi) ".00000003d+8"))
 349 (assert (string= (format nil "~9,4,,-5E" pi) ".000003d+6"))
 350 (assert (string= (format nil "~5,4,,7E" pi) "3141600.d-6"))
 351 (assert (string= (format nil "~11,4,,3E" pi) "  314.16d-2"))
 352 (assert (string= (format nil "~11,4,,5E" pi) "  31416.d-4"))
 353 (assert (string= (format nil "~11,4,,0E" pi) "  0.3142d+1"))
 354 (assert (string= (format nil "~9,,,-1E" pi) ".03142d+2"))
 355 (assert (string= (format nil "~,,,-2E" pi) "0.003141592653589793d+3"))
 356 (assert (string= (format nil "~,,,2E" pi) "31.41592653589793d-1"))
 357 (assert (string= (format nil "~E" pi) "3.141592653589793d+0"))
 358 (assert (string= (format nil "~9,5,,-1E" pi) ".03142d+2"))
 359 (assert (string= (format nil "~11,5,,-1E" pi) " 0.03142d+2"))
 360 (assert (string= (format nil "~G" pi) "3.141592653589793    "))
 361 (assert (string= (format nil "~9,5G" pi) "3.1416    "))
 362 (assert (string= (format nil "|~13,6,2,7E|" pi) "| 3141593.d-06|"))
 363 (assert (string= (format nil "~9,3,2,0,'%E" pi) "0.314d+01"))
 364 (assert (string= (format nil "~9,0,6f" pi) " 3141593."))
 365 (assert (string= (format nil "~6,2,1,'*F" pi) " 31.42"))
 366 (assert (string= (format nil "~6,2,1,'*F" (* 100 pi)) "******"))
 367 (assert (string= (format nil "~9,3,2,-2,'%@E" pi) "+.003d+03"))
 368 (assert (string= (format nil "~10,3,2,-2,'%@E" pi) "+0.003d+03"))
 369 (assert (string= (format nil "~15,3,2,-2,'%,'=@E" pi) "=====+0.003d+03"))
 370 (assert (string= (format nil "~9,3,2,-2,'%E" pi) "0.003d+03"))
 371 (assert (string= (format nil "~8,3,2,-2,'%@E" pi) "%%%%%%%%"))
 372
 373 (assert (string= (format nil "~g" 1e0) "1.    "))
 374 (assert (string= (format nil "~g" 1.2d40) "12000000000000000000000000000000000000000.    "))
 375
 376 (assert (string= (format nil "~e" 0) "0.0e+0"))
 377 (assert (string= (format nil "~e" 0d0) "0.0d+0"))
 378 (assert (string= (format nil "~9,,4e" 0d0) "0.0d+0000"))
 379
 380 (let ((table (make-hash-table)))
 381   (setf (gethash 1 table) t)
 382   (assert
 383    (raises-error? (with-standard-io-syntax
 384                     (let ((*read-eval* nil)
 385                           (*print-readably* t))
 386                       (with-output-to-string (*standard-output*)
 387                         (prin1 table))))
 388                   print-not-readable)))
 389
 390 ;; Test that we can print characters readably regardless of the external format
 391 ;; of the stream.
 392
 393 (defun test-readable-character (character external-format)
 394   (let ((file "print.impure.tmp"))
 395     (unwind-protect
 396          (progn
 397            (with-open-file (stream file
 398                                    :direction :output
 399                                    :external-format external-format
 400                                    :if-exists :supersede)
 401              (write character :stream stream :readably t))
 402            (with-open-file (stream file
 403                                    :direction :input
 404                                    :external-format external-format
 405                                    :if-does-not-exist :error)
 406              (assert (char= (read stream) character))))
 407       (ignore-errors
 408         (delete-file file)))))
 409
 410 (with-test (:name (:print-readable :character :utf-8) :skipped-on '(not :sb-unicode))
 411   (test-readable-character (code-char #xfffe) :utf-8))
 412
 413 (with-test (:name (:print-readable :character :iso-8859-1) :skipped-on '(not :sb-unicode))
 414   (test-readable-character (code-char #xfffe) :iso-8859-1))
 415
 416 (assert (string= (eval '(format nil "~:C" #\a)) "a"))
 417 (assert (string= (format nil (formatter "~:C") #\a) "a"))
 418
 419 ;;; This used to trigger an AVER instead.
 420 (assert (raises-error? (eval '(formatter "~>")) sb-format:format-error))
 421 (assert (raises-error? (eval '(format t "~>")) sb-format:format-error))
 422
 423 ;;; readably printing hash-tables, check for circularity
 424 (let ((x (cons 1 2))
 425       (h (make-hash-table))
 426       (*print-readably* t)
 427       (*print-circle* t)
 428       (*read-eval* t))
 429   (setf (gethash x h) h)
 430   (destructuring-bind (x2 . h2) (read-from-string (write-to-string (cons x h)))
 431     (assert (equal x x2))
 432     (assert (eq h2 (gethash x2 h2)))))
 433
 434 ;;; an off-by-one error in the ~R format directive until 1.0.15.20
 435 ;;; prevented printing cardinals and ordinals between (expt 10 63) and
 436 ;;; (1- (expt 10 66))
 437 (assert (string= (format nil "~R" (expt 10 63)) "one vigintillion"))
 438 (assert (string= (format nil "~:R" (expt 10 63)) "one vigintillionth"))
 439
 440 ;;; too-clever cacheing for PRINT-OBJECT resulted in a bogus method
 441 ;;; for printing RESTART objects.  Check also CONTROL-STACK-EXHAUSTED
 442 ;;; and HEAP-EXHAUSTED-ERROR.
 443 (let ((result (with-output-to-string (*standard-output*)
 444                 (princ (find-restart 'abort)))))
 445   (assert (string/= result "#<" :end1 2)))
 446 (let ((result (with-output-to-string (*standard-output*)
 447                 (princ (make-condition 'sb-kernel::control-stack-exhausted)))))
 448   (assert (string/= result "#<" :end1 2)))
 449 (let ((result (with-output-to-string (*standard-output*)
 450                 (princ (make-condition 'sb-kernel::heap-exhausted-error)))))
 451   (assert (string/= result "#<" :end1 2)))
 452
 453 (with-test (:name (:with-standard-io-syntax :bind-print-pprint-dispatch))
 454   (let ((*print-pprint-dispatch* (copy-pprint-dispatch nil)))
 455     (set-pprint-dispatch 'symbol #'(lambda (stream obj)
 456                                      (declare (ignore obj))
 457                                      (write-string "FOO" stream)))
 458     (with-standard-io-syntax
 459       (let ((*print-pretty* t))
 460         (assert (string= (princ-to-string 'bar) "BAR"))))))
 461
 462 ;;; bug-lp#488979
 463
 464 (defclass a-class-name () ())
 465
 466 (assert (find #\Newline
 467               (let ((*print-pretty* t)
 468                     (*print-right-margin* 10))
 469                 (format nil "~A" (make-instance 'a-class-name)))
 470               :test #'char=))
 471
 472 (assert (not (find #\Newline
 473                    (let ((*print-pretty* nil)
 474                          (*print-right-margin* 10))
 475                      (format nil "~A" (make-instance 'a-class-name)))
 476                    :test #'char=)))
 477
 478 ;;; The PRINT-OBJECT method for RANDOM-STATE used to have a bogus
 479 ;;; dimension argument for MAKE-ARRAY.
 480 (with-test (:name :print-random-state)
 481   (assert (equalp *random-state*
 482                   (read-from-string
 483                    (write-to-string *random-state*)))))
 484
 485 (with-test (:name :write-return-value)
 486   (assert (= 123 (funcall (compile nil (lambda ()
 487                                          (write 123)))))))
 488
 489 (with-test (:name :write/write-to-string-compiler-macro-lp/598374+581564)
 490   (let ((test (compile nil
 491                        `(lambda (object &optional output-stream)
 492                           (write object
 493                                  :stream output-stream)))))
 494     (assert (equal "(HELLO WORLD)"
 495                    (with-output-to-string (*standard-output*)
 496                      (let ((list '(hello world)))
 497                        (assert (eq list (funcall test list)))))))
 498     (assert (equal "12"
 499                    (with-output-to-string (*standard-output*)
 500                      (assert (eql 12 (funcall test 12)))))))
 501   (let ((test (compile nil
 502                        `(lambda ()
 503                           (let ((*print-length* 42))
 504                             (write-to-string *print-length* :length nil))))))
 505     (assert (equal "42" (funcall test)))))
 506
 507 (with-test (:name (:format :compile-literal-dest-string))
 508   (assert (eq :warned
 509               (handler-case
 510                   (compile nil
 511                            `(lambda (x) (format "~A" x)))
 512                 ((and warning (not style-warning)) ()
 513                   :warned)))))
 514
 515 (with-test (:name :bug-308961)
 516   (assert (string= (format nil "~4,1F" 0.001) " 0.0"))
 517   (assert (string= (format nil "~4,1@F" 0.001) "+0.0"))
 518   (assert (string= (format nil "~E" 0.01) "1.e-2"))
 519   (assert (string= (format nil "~G" 0.01) "1.00e-2")))
 520
 521 (with-test (:name (:fp-print-read-consistency single-float))
 522   (let ((*random-state* (make-random-state t))
 523         (oops))
 524     (loop for f = most-positive-single-float then (/ f 2.0)
 525           while (> f 0.0)
 526           do (loop repeat 10
 527                    for fr = (random f)
 528                    do (unless (eql fr (read-from-string (prin1-to-string fr)))
 529                         (push fr oops)
 530                         (return))))
 531     (loop for f = most-negative-single-float then (/ f 2.0)
 532           while (< f -0.0)
 533           do (loop repeat 10
 534                    for fr = (- (random (- f)))
 535                    do (unless (eql fr (read-from-string (prin1-to-string fr)))
 536                         (push fr oops)
 537                         (return))))
 538     (when oops
 539       (error "FP print-read inconsistencies:~%~:{  ~S => ~S~%~}"
 540              (mapcar (lambda (f)
 541                        (list f (read-from-string (prin1-to-string f))))
 542                      oops)))))
 543
 544 (with-test (:name (:fp-print-read-consistency double-float))
 545   (let ((*random-state* (make-random-state t))
 546         (oops))
 547     ;; FIXME skipping denormalized floats due to bug 793774.
 548     (loop for f = most-positive-double-float then (/ f 2d0)
 549           while (> f 0d0)
 550           do (loop repeat 10
 551                    for fr = (random f)
 552                    do (unless (float-denormalized-p fr)
 553                         (unless (eql fr (read-from-string (prin1-to-string fr)))
 554                           (push fr oops)
 555                           (return)))))
 556     (loop for f = most-negative-double-float then (/ f 2d0)
 557           while (< f -0d0)
 558           do (loop repeat 10
 559                    for fr = (- (random (- f)))
 560                    do (unless (float-denormalized-p fr)
 561                         (unless (eql fr (read-from-string (prin1-to-string fr)))
 562                           (push fr oops)
 563                           (return)))))
 564     (when oops
 565       (error "FP print-read inconsistencies:~%~:{  ~S => ~S~%~}"
 566              (mapcar (lambda (f)
 567                        (list f (read-from-string (prin1-to-string f))))
 568                      oops)))))
 569
 570 (with-test (:name :bug-811386)
 571   (assert (equal "   0.00" (format nil "~7,2,-2f" 0)))
 572   (assert (equal "   0.00" (format nil "~7,2,2f" 0)))
 573   (assert (equal "   0.01" (format nil "~7,2,-2f" 1)))
 574   (assert (equal " 100.00" (format nil "~7,2,2f" 1)))
 575   (assert (equal "   0.00" (format nil "~7,2,-2f" 0.1)))
 576   (assert (equal "  10.00" (format nil "~7,2,2f" 0.1)))
 577   (assert (equal "   0.01" (format nil "~7,2,-2f" 0.5))))
 578
 579 (with-test (:name :bug-867684)
 580   (assert (equal "ab" (format nil "a~0&b"))))
 581
 582 (with-test (:name :print-unreadably-function)
 583   (assert (equal "\"foo\""
 584                  (handler-bind ((print-not-readable #'sb-ext:print-unreadably))
 585                    (write-to-string (coerce "foo" 'base-string) :readably t)))))
 586
 587 (with-test (:name :printing-specialized-arrays-readably)
 588   (let ((*read-eval* t)
 589         (dimss (loop repeat 10
 590                      collect (loop repeat (1+ (random 3))
 591                                    collect (1+ (random 10)))))
 592         (props sb-vm::*specialized-array-element-type-properties*))
 593     (labels ((random-elt (type)
 594                (case type
 595                  (base-char
 596                   (code-char (random 128)))
 597                  (character
 598                   (code-char (random char-code-limit)))
 599                  (single-float
 600                   (+ least-positive-normalized-single-float
 601                      (random most-positive-single-float)))
 602                  (double-float
 603                   (+ least-positive-normalized-double-float
 604                          (random most-positive-double-float)))
 605                  (bit
 606                   (random 2))
 607                  (fixnum
 608                   (random most-positive-fixnum))
 609                  ((t)
 610                   t)
 611                  (otherwise
 612                   (destructuring-bind (type x) type
 613                     (ecase type
 614                       (unsigned-byte
 615                        (random (1- (expt 2 x))))
 616                       (signed-byte
 617                        (- (random (expt 2 (1- x)))))
 618                       (complex
 619                        (complex (random-elt x) (random-elt x)))))))))
 620       (dotimes (i (length props))
 621         (let ((et (sb-vm::saetp-specifier (aref props i))))
 622           (when et
 623             (when (eq 'base-char et)
 624               ;; base-strings not included in the #. printing.
 625               (go :next))
 626             (dolist (dims dimss)
 627               (let ((a (make-array dims :element-type et)))
 628                 (assert (equal et (array-element-type a)))
 629                 (dotimes (i (array-total-size a))
 630                   (setf (row-major-aref a i) (random-elt et)))
 631                 (let ((copy (read-from-string (write-to-string a :readably t))))
 632                   (assert (equal dims (array-dimensions copy)))
 633                   (assert (equal et (array-element-type copy)))
 634                   (assert (equal (array-total-size a) (array-total-size copy)))
 635                   (dotimes (i (array-total-size a))
 636                     (assert (equal (row-major-aref a i) (row-major-aref copy i)))))))))
 637         :next))))
 638
 639 (with-test (:name (:format :negative-colinc-and-mincol))
 640   (assert (raises-error? (format nil "~-2a" 1)))
 641   (assert (raises-error? (format nil "~,0a" 1))))
 642
 643 (with-test (:name :bug-905817)
 644   ;; The bug manifests itself in an endless loop in FORMAT.
 645   ;; Correct behaviour is to signal an error.
 646   (handler-case
 647       (with-timeout 5
 648         (assert (raises-error? (format nil "e~8,0s" 12395))))
 649     (timeout ()
 650       (error "Endless loop in FORMAT"))))
 651
 652 (with-test (:name :format-type-check)
 653   (assert (equal "1/10" (format nil "~2r" 1/2)))
 654   (assert (raises-error? (format nil "~r" 1.32) sb-format:format-error))
 655   (assert (raises-error? (format nil "~c" 1.32) sb-format:format-error))
 656   (assert (equal "1/10" (eval '(format nil "~2r" 1/2))))
 657   (assert (raises-error? (eval '(format nil "~r" 1.32)) sb-format:format-error))
 658   (assert (raises-error? (eval '(format nil "~c" 1.32)) sb-format:format-error)))
 659
 660 ;;; success