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 ;;; Ensure that we don't print a value cell as #S(RANDOM-CLASS ...)
  36 (defun f (x) (lambda (y) (+ (incf x) y)))
  37 (compile 'f)
  38 (with-test (:name :output-value-cell)
  39   (assert (search "#<value cell"
  40                   (write-to-string (sb-kernel:%closure-index-ref (f 3) 0)))))
  41
  42 ;;; Nathan Froyd reported that sbcl-0.6.11.34 screwed up output of
  43 ;;; floating point infinities.
  44 (with-test (:name (write float :infinities))
  45   (dolist (x (list short-float-positive-infinity short-float-negative-infinity
  46                    single-float-positive-infinity single-float-negative-infinity
  47                    double-float-positive-infinity double-float-negative-infinity
  48                    long-float-positive-infinity long-float-negative-infinity))
  49     (assert-output x)))
  50
  51 ;;; Eric Marsden reported that this would blow up in CMU CL (even
  52 ;;; though ANSI says that the mismatch between ~F expected type and
  53 ;;; provided string type is supposed to be handled without signalling
  54 ;;; an error) and provided a fix which was ported to sbcl-0.6.12.35.
  55 (with-test (:name (format :fixed-format-floating-point-directive :type-mismatch))
  56   (let ((*standard-output* (make-broadcast-stream)))
  57     (assert (null (format t "~F" "foo")))))
  58
  59 ;;; This was a bug in SBCL until 0.6.12.40 (originally reported as a
  60 ;;; CMU CL bug by Erik Naggum on comp.lang.lisp).
  61 (with-test (:name (format bit-vector *print-base* *print-radix*))
  62   (loop for base from 2 to 36
  63      with *print-radix* = t
  64      do (let ((*print-base* base))
  65           (assert (string= "#*101" (format nil "~S" #*101))))))
  66
  67 ;;; bug in sbcl-0.7.1.25, reported by DB sbcl-devel 2002-02-25
  68 (with-test (:name (:format :decimal-directive :type-mismatch))
  69   (assert (string= "0.5" (format nil "~2D" 0.5))))
  70
  71 ;;; we want malformed format strings to cause errors rather than have
  72 ;;; some DWIM "functionality".
  73 (with-test (:name (format :tabulate-directive :malformed))
  74   (multiple-value-bind (fun failure-p warnings)
  75       (checked-compile `(lambda () (format nil "~:2T"))
  76                        :allow-failure t :allow-warnings t)
  77     (assert failure-p)
  78     (assert (= 1 (length warnings)))
  79     (assert-error (funcall fun))))
  80
  81 ;;; bug reported, with fix, by Robert Strandh, sbcl-devel 2002-03-09,
  82 ;;; fixed in sbcl-0.7.1.36:
  83 (with-test (:name (format :monetary-floating-point-directive 1))
  84   (assert (string= (format nil "~2,3,8,'0$" 1234567.3d0) "1234567.30")))
  85
  86 ;;; checks that other FORMAT-DOLLAR output remains sane after the
  87 ;;; 0.7.1.36 change
  88 (with-test (:name (format :monetary-floating-point-directive 2))
  89   (assert (string= (format nil "~$" 0) "0.00"))
  90   (assert (string= (format nil "~$" 4) "4.00"))
  91   (assert (string= (format nil "~$" -4.0) "-4.00"))
  92   (assert (string= (format nil "~2,7,11$" -4.0) "-0000004.00"))
  93   (assert (string= (format nil "~2,7,11,' $" 1.1) " 0000001.10"))
  94   (assert (string= (format nil "~1,7,11,' $" 1.1) "  0000001.1"))
  95   (assert (string= (format nil "~1,3,8,' $" 7.3) "   007.3"))
  96   (assert (string= (format nil "~2,3,8,'0$" 7.3) "00007.30")))
  97
  98 ;;; Check for symbol lookup in ~/ / directive -- double-colon was
  99 ;;; broken in 0.7.1.36 and earlier
 100 (defun print-foo (stream arg colonp atsignp &rest params)
 101   (declare (ignore colonp atsignp params))
 102   (format stream "~d" arg))
 103
 104 (with-test (:name (format :call-function-directive :smoke))
 105   (assert (string= (format nil "~/print-foo/" 2) "2"))
 106   (assert (string= (format nil "~/cl-user:print-foo/" 2) "2"))
 107   (assert (string= (format nil "~/cl-user::print-foo/" 2) "2")))
 108
 109 (with-test (:name (format :call-function-directive :syntax-errors))
 110   (flet ((test (args)
 111            (multiple-value-bind (fun failure-p)
 112                (checked-compile `(lambda (format nil ,@args))
 113                                 :allow-failure t)
 114              (assert failure-p)
 115              (assert-error (funcall fun)))))
 116     (test '("~/cl-user:::print-foo/" 2))
 117     (test '("~/cl-user:a:print-foo/" 2))
 118     (test '("~/a:cl-user:print-foo/" 2))
 119     (test '("~/cl-user:print-foo:print-foo/" 2))))
 120
 121 ;;; better make sure that we get this one right, too
 122 (defun print-foo\:print-foo (stream arg colonp atsignp &rest params)
 123   (declare (ignore colonp atsignp params))
 124   (format stream "~d" arg))
 125
 126 (with-test (:name (format :call-function-directive :colon-in-function-name))
 127   (assert (string= (format nil "~/cl-user:print-foo:print-foo/" 2) "2"))
 128   (assert (string= (format nil "~/cl-user::print-foo:print-foo/" 2) "2")))
 129
 130 ;;; Check for error detection of illegal directives in a~<..~> justify
 131 ;;; block (see ANSI section 22.3.5.2)
 132 (with-test (:name (format :justification-directive :illegal-directives))
 133   (flet ((test (args)
 134            (multiple-value-bind (fun failure-p)
 135                (checked-compile `(lambda () (format nil ,@args))
 136                                 :allow-failure t)
 137              (assert failure-p)
 138              (assert-error (funcall fun)))))
 139     (test '("~<~W~>" 'foo))
 140     (test '("~<~<~A~:>~>" '(foo))))
 141   (assert (string= (format nil "~<~<~A~>~>" 'foo) "FOO")))
 142
 143 (with-test (:name (format :justification-directive :atsign-check))
 144   (multiple-value-bind (fun failure-p)
 145       (checked-compile `(lambda () (format nil "~<~@>"))
 146                        :allow-failure t)
 147     (assert failure-p)
 148     (assert-error (funcall fun)))
 149   (assert-error (eval '(format nil "~<~@>"))))
 150
 151 ;;; Check that arrays that we print while *PRINT-READABLY* is true are
 152 ;;; in fact generating similar objects.
 153 (with-test (:name (print array *print-readably* :dimensions))
 154   (assert (equal (array-dimensions
 155                   (read-from-string
 156                    (with-output-to-string (s)
 157                      (let ((*print-readably* t))
 158                        (print (make-array '(1 2 0)) s)))))
 159                  '(1 2 0))))
 160
 161 (with-test (:name (print array *print-readably* :element-type))
 162   (dolist (array (list (make-array '(1 0 1))
 163                        (make-array 0 :element-type nil)
 164                        (make-array 1 :element-type 'base-char)
 165                        (make-array 1 :element-type 'character)))
 166     (assert (multiple-value-bind (result error)
 167                 (ignore-errors (read-from-string
 168                                 (with-output-to-string (s)
 169                                   (let ((*print-readably* t))
 170                                     (print array s)))))
 171               ;; it might not be readably-printable
 172               (or (typep error 'print-not-readable)
 173                   (and
 174                    ;; or else it had better have the same dimensions
 175                    (equal (array-dimensions result) (array-dimensions array))
 176                    ;; and the same element-type
 177                    (equal (array-element-type result) (array-element-type array))))))))
 178
 179 ;;; before 0.8.0.66 it signalled UNBOUND-VARIABLE
 180 (with-test (:name (write vector :smoke))
 181   (let ((*standard-output* (make-broadcast-stream)))
 182     (write #(1 2 3) :pretty nil :readably t)))
 183
 184 ;;; another UNBOUND-VARIABLE, this time due to a bug in FORMATTER
 185 ;;; expanders.
 186 (with-test (:name (formatter :smoke))
 187   (funcall (formatter "~@<~A~:*~A~:>") (make-broadcast-stream) 3))
 188
 189 ;;; the PPC floating point backend was at one point sufficiently
 190 ;;; broken that this looped infinitely or caused segmentation
 191 ;;; violations through stack corruption.
 192 (with-test (:name (print float :smoke))
 193   (let ((*standard-output* (make-broadcast-stream)))
 194     (print 0.0001)))
 195
 196 ;;; In sbcl-0.8.7, the ~W format directive interpreter implemented the
 197 ;;; sense of the colon and at-sign modifiers exactly backwards.
 198 ;;;
 199 ;;; (Yes, the test for this *is* substantially hairier than the fix;
 200 ;;; wanna make something of it?)
 201 (cl:in-package :cl-user)
 202 (defstruct wexerciser-0-8-7)
 203 (defun wexercise-0-8-7-interpreted (wformat)
 204   (format t wformat (make-wexerciser-0-8-7)))
 205 (defmacro define-compiled-wexercise-0-8-7 (wexercise wformat)
 206   `(defun ,wexercise ()
 207     (declare (optimize (speed 3) (space 1)))
 208     (format t ,wformat (make-wexerciser-0-8-7))
 209     (values)))
 210 (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-without-atsign "~W")
 211 (define-compiled-wexercise-0-8-7 wexercise-0-8-7-compiled-with-atsign "~@W")
 212 (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream)
 213   (unless (and *print-level* *print-length*)
 214     (error "gotcha coming")))
 215 (with-test (:name (format :write-directive :colon :at-sign 1))
 216   (let ((*print-level* 11)
 217         (*print-length* 12)
 218         (*standard-output* (make-broadcast-stream)))
 219     (wexercise-0-8-7-interpreted "~W")
 220     (wexercise-0-8-7-compiled-without-atsign)))
 221 (remove-method #'print-object
 222                (find-method #'print-object
 223                             '(:before)
 224                             (mapcar #'find-class '(wexerciser-0-8-7 t))))
 225 (defmethod print-object :before ((wexerciser-0-8-7 wexerciser-0-8-7) stream)
 226   (when (or *print-level* *print-length*)
 227     (error "gotcha going")))
 228 (with-test (:name (format :write-directive :colon :at-sign 2))
 229   (let ((*print-level* 11)
 230         (*print-length* 12)
 231         (*standard-output* (make-broadcast-stream)))
 232     (wexercise-0-8-7-interpreted "~@W")
 233     (wexercise-0-8-7-compiled-with-atsign)))
 234 \f
 235 ;;; WRITE-TO-STRING was erroneously DEFKNOWNed as FOLDABLE
 236
 237 ;;; This bug from PFD
 238 (defpackage "SCRATCH-WRITE-TO-STRING" (:use))
 239 (with-test (:name (write symbol *package*))
 240   (with-standard-io-syntax
 241     (let* ((*package* (find-package "SCRATCH-WRITE-TO-STRING"))
 242            (answer (write-to-string 'scratch-write-to-string::x :readably nil)))
 243       (assert (string= answer "X")))))
 244
 245 ;;; and a couple from Bruno Haible
 246 (defun my-pprint-reverse (out list)
 247   (write-char #\( out)
 248   (when (setq list (reverse list))
 249     (loop
 250      (write (pop list) :stream out)
 251      (when (endp list) (return))
 252      (write-char #\Space out)))
 253   (write-char #\) out))
 254 (with-test (:name (write *print-pprint-dispatch* 1))
 255   (with-standard-io-syntax
 256     (let ((*print-pprint-dispatch* (copy-pprint-dispatch)))
 257       (set-pprint-dispatch '(cons (member foo)) 'my-pprint-reverse 0)
 258       (let ((answer (write-to-string '(foo bar :boo 1) :pretty t :escape t)))
 259         (assert (string= answer "(1 :BOO BAR FOO)"))))))
 260
 261 (defun my-pprint-logical (out list)
 262   (pprint-logical-block (out list :prefix "(" :suffix ")")
 263     (when list
 264       (loop
 265        (write-char #\? out)
 266        (write (pprint-pop) :stream out)
 267        (write-char #\? out)
 268        (pprint-exit-if-list-exhausted)
 269        (write-char #\Space out)))))
 270 (with-test (:name (write *print-pprint-dispatch* 2))
 271   (with-standard-io-syntax
 272     (let ((*print-pprint-dispatch* (copy-pprint-dispatch)))
 273       (set-pprint-dispatch '(cons (member bar)) 'my-pprint-logical 0)
 274       (let ((answer (write-to-string '(bar foo :boo 1) :pretty t :escape t)))
 275         (assert (string= answer "(?BAR? ?FOO? ?:BOO? ?1?)"))))))
 276
 277 ;;; FORMAT string compile-time checker failure, reported by Thomas
 278 ;;; F. Burdick
 279 (with-test (:name (format :compile-time-check))
 280   (multiple-value-bind (fun failure-p warnings)
 281       (checked-compile '(lambda () (format nil "~{"))
 282                        :allow-failure t :allow-warnings t)
 283     (assert failure-p)
 284     (assert (= (length warnings) 1))
 285     (assert-error (funcall fun))))
 286
 287 ;;; floating point print/read consistency
 288 (with-test (:name (read print float :consistency))
 289   (let* ((x (/ -9.349640046247849d-21 -9.381494249123696d-11))
 290          (y (read-from-string (write-to-string x :readably t))))
 291     (assert (eql x y)))
 292
 293   (let ((x1 (float -5496527/100000000000000000))
 294         (x2 (float -54965272/1000000000000000000)))
 295     (assert (or (equal (multiple-value-list (integer-decode-float x1))
 296                        (multiple-value-list (integer-decode-float x2)))
 297                 (string/= (prin1-to-string x1) (prin1-to-string x2))))))
 298
 299 ;;; readable printing of arrays with *print-radix* t
 300 (with-test (:name (write read array *print-radix*))
 301   (let ((*print-radix* t)
 302         (*print-readably* t)
 303         (*print-pretty* nil))
 304     (let ((output (with-output-to-string (s)
 305                     (write #2a((t t) (nil nil)) :stream s))))
 306       (assert (equalp (read-from-string output) #2a((t t) (nil nil)))))))
 307
 308 ;;; NIL parameters to "interpreted" FORMAT directives
 309 (with-test (:name (format :v-directive-arg nil))
 310  (assert (string= (format nil "~v%" nil) (string #\Newline))))
 311
 312 ;;; PRINC-TO-STRING should bind print-readably
 313 (with-test (:name (princ-to-string *print-readably*))
 314   (let ((*print-readably* t))
 315     (assert (string= (princ-to-string #\7)
 316                      (write-to-string #\7 :escape nil :readably nil)))))
 317
 318 ;;; in FORMAT, ~^ inside ~:{ should go to the next case, not break
 319 ;;; iteration, even if one argument is just a one-element list.
 320 (with-test (:name (format :escape-upward-directive :in :iteration-directive))
 321   (assert (string= (format nil "~:{~A~^~}" '((A) (C D))) "AC")))
 322
 323 ;;; errors should be signaled if pprint and justification are mixed
 324 ;;; injudiciously...
 325 (with-test (:name (format :mixing :justification-directive :pprint-directives :illegal))
 326   (dolist (x (list "~<~:;~>~_" "~<~:;~>~I" "~<~:;~>~W"
 327                    "~<~:;~>~:T" "~<~:;~>~<~:>" "~_~<~:;~>"
 328                    "~I~<~:;~>" "~W~<~:;~>" "~:T~<~:;~>" "~<~:>~<~:;~>"))
 329     (assert-error (format nil x nil))
 330     (assert-error (format nil (eval `(formatter ,x)) nil))))
 331 ;;; ...but not in judicious cases.
 332 (with-test (:name (format :mixing :justification-directive :pprint-directives :legal))
 333   (dolist (x (list "~<~;~>~_" "~<~;~>~I" "~<~;~>~W"
 334                    "~<~;~>~:T" "~<~;~>~<~>" "~_~<~;~>"
 335                    "~I~<~;~>" "~W~<~;~>" "~:T~<~;~>" "~<~>~<~;~>"
 336                    "~<~:;~>~T" "~T~<~:;~>"))
 337     (assert (format nil x nil))
 338     (assert (format nil (eval `(formatter ,x)) nil))))
 339
 340 ;;; bug 350: bignum printing so memory-hungry that heap runs out
 341 ;;; -- just don't stall here forever on a slow box
 342 (with-test (:name :bug-350)
 343   (handler-case
 344       (with-timeout 10
 345         (print (ash 1 1000000) (make-broadcast-stream)))
 346     (timeout ()
 347       (print 'timeout!))))
 348
 349 ;;; bug 371: bignum print/read inconsistency
 350 (defvar *bug-371* -7043009959286724629649270926654940933664689003233793014518979272497911394287216967075767325693021717277238746020477538876750544587281879084559996466844417586093291189295867052594478662802691926547232838591510540917276694295393715934079679531035912244103731582711556740654671309980075069010778644542022/670550434139267031632063192770201289106737062379324644110801846820471752716238484923370056920388400273070254958650831435834503195629325418985020030706879602898158806736813101434594805676212779217311897830937606064579213895527844045511878668289820732425014254579493444623868748969110751636786165152601)
 351 (with-test (:name (read print bignum :consistency :bug-371))
 352   (let ((*print-base* 5)
 353         (*read-base* 5)
 354         (*print-radix* nil))
 355     (assert (= *bug-371* (read-from-string (prin1-to-string *bug-371*))))))
 356
 357 ;;; a spot of random-testing for rational printing
 358 (defvar *seed-state* (make-random-state))
 359 (with-open-file (f "last-random-state.lisp-expr"
 360                    :direction :output :if-exists :supersede)
 361   ;; I don't want to see this every time
 362   (write *seed-state* :pretty nil :stream f)) ; so that we can reproduce errors
 363 (with-test (:name (read print rational :consistency ))
 364   (let ((seed (make-random-state *seed-state*)))
 365     (loop repeat 42
 366        do (let ((n (random (ash 1 1000) seed))
 367                 (d (random (ash 1 1000) seed)))
 368             (when (zerop (random 2 seed))
 369               (setf n (- n)))
 370             (let ((r (/ n d)))
 371               (loop for base from 2 to 36
 372                  do (let ((*print-base* base)
 373                           (*read-base* base)
 374                           (*print-radix* nil))
 375                       (assert (= r (read-from-string (prin1-to-string r))))
 376                       (if (= 36 base)
 377                           (decf *read-base*)
 378                           (incf *read-base*))
 379                       (assert (not (eql r (read-from-string (prin1-to-string r)))))
 380                       (let ((*print-radix* t))
 381                         (assert (= r (read-from-string
 382                                       (princ-to-string r))))))))))))
 383
 384 ;;;; Bugs, found by PFD
 385 ;;; NIL parameter for ~^ means `not supplied'
 386 (with-test (:name (format :escape-upward-directive :v-directive-arg nil))
 387   (loop for (format arg result) in
 388        '(("~:{~D~v^~D~}" ((3 1 4) (1 0 2) (7 nil) (5 nil 6)) "341756")
 389          ("~:{~1,2,v^~A~}" ((nil 0) (3 1) (0 2)) "02"))
 390      do (assert (string= (funcall #'format nil format arg) result))
 391      do (assert (string= (with-output-to-string (s)
 392                            (funcall (eval `(formatter ,format)) s arg))
 393                          result))))
 394
 395 ;;; NIL first parameter for ~R is equivalent to no parameter.
 396 (with-test (:name (format :radix-directive nil :argument))
 397   (assert (string= (format nil "~VR" nil 5) "five"))
 398   (assert (string= (format nil (formatter "~VR") nil 6) "six")))
 399
 400 ;;; CSR inserted a bug into Burger & Dybvig's float printer.  Caught
 401 ;;; by Raymond Toy
 402 (with-test (:name (format :exponential-floating-point-directive :smoke))
 403   (assert (string= (format nil "~E" 1d23) "1.d+23")))
 404
 405 ;;; Fixed-format bugs from CLISP's test suite (reported by Bruno
 406 ;;; Haible, bug 317)
 407 (with-test (:name (format :fixed-format-floating-point-directive :bug-317))
 408  (assert (string= (format nil "~1F" 10) "10."))
 409  (assert (string= (format nil "~0F" 10) "10."))
 410  (assert (string= (format nil "~2F" 1234567.1) "1234567.")))
 411
 412 ;;; here's one that seems to fail most places.  I think this is right,
 413 ;;; and most of the other answers I've seen are definitely wrong.
 414 (with-test (:name (format :general-floating-point-directive :smoke))
 415   (assert (string= (format nil "~G" 1d23) "100000000000000000000000.    ")))
 416
 417 ;;; Adam Warner's test case
 418 (with-test (:name (format :fixed-format-floating-point-directive :at-sign))
 419   (assert (string= (format nil "~@F" 1.23) "+1.23")))
 420
 421
 422 ;;; New (2005-11-08, also known as CSR House day) float format test
 423 ;;; cases.  Simon Alexander, Raymond Toy, and others
 424 (with-test (:name (format :floating-point-directives :misc))
 425   (assert (string= (format nil "~9,4,,-7E" pi) ".00000003d+8"))
 426   (assert (string= (format nil "~9,4,,-5E" pi) ".000003d+6"))
 427   (assert (string= (format nil "~5,4,,7E" pi) "3141600.d-6"))
 428   (assert (string= (format nil "~11,4,,3E" pi) "  314.16d-2"))
 429   (assert (string= (format nil "~11,4,,5E" pi) "  31416.d-4"))
 430   (assert (string= (format nil "~11,4,,0E" pi) "  0.3142d+1"))
 431   (assert (string= (format nil "~9,,,-1E" pi) ".03142d+2"))
 432   (assert (string= (format nil "~,,,-2E" pi) "0.003141592653589793d+3"))
 433   (assert (string= (format nil "~,,,2E" pi) "31.41592653589793d-1"))
 434   (assert (string= (format nil "~E" pi) "3.141592653589793d+0"))
 435   (assert (string= (format nil "~9,5,,-1E" pi) ".03142d+2"))
 436   (assert (string= (format nil "~11,5,,-1E" pi) " 0.03142d+2"))
 437   (assert (string= (format nil "~G" pi) "3.141592653589793    "))
 438   (assert (string= (format nil "~9,5G" pi) "3.1416    "))
 439   (assert (string= (format nil "|~13,6,2,7E|" pi) "| 3141593.d-06|"))
 440   (assert (string= (format nil "~9,3,2,0,'%E" pi) "0.314d+01"))
 441   (assert (string= (format nil "~9,0,6f" pi) " 3141593."))
 442   (assert (string= (format nil "~6,2,1,'*F" pi) " 31.42"))
 443   (assert (string= (format nil "~6,2,1,'*F" (* 100 pi)) "******"))
 444   (assert (string= (format nil "~9,3,2,-2,'%@E" pi) "+.003d+03"))
 445   (assert (string= (format nil "~10,3,2,-2,'%@E" pi) "+0.003d+03"))
 446   (assert (string= (format nil "~15,3,2,-2,'%,'=@E" pi) "=====+0.003d+03"))
 447   (assert (string= (format nil "~9,3,2,-2,'%E" pi) "0.003d+03"))
 448   (assert (string= (format nil "~8,3,2,-2,'%@E" pi) "%%%%%%%%"))
 449
 450   (assert (string= (format nil "~g" 1e0) "1.    "))
 451   (assert (string= (format nil "~g" 1.2d40) "12000000000000000000000000000000000000000.    "))
 452
 453   (assert (string= (format nil "~e" 0) "0.0e+0"))
 454   (assert (string= (format nil "~e" 0d0) "0.0d+0"))
 455   (assert (string= (format nil "~9,,4e" 0d0) "0.0d+0000")))
 456
 457 (with-test (:name (print hash-table print-not-readable))
 458   (let ((table (make-hash-table)))
 459     (setf (gethash 1 table) t)
 460     (assert-error (with-standard-io-syntax
 461                     (let ((*read-eval* nil)
 462                           (*print-readably* t))
 463                       (with-output-to-string (*standard-output*)
 464                         (prin1 table))))
 465                   print-not-readable)))
 466
 467 ;; Test that we can print characters readably regardless of the external format
 468 ;; of the stream.
 469
 470 (defun test-readable-character (character external-format)
 471   (let ((file "print.impure.tmp"))
 472     (unwind-protect
 473          (progn
 474            (with-open-file (stream file
 475                                    :direction :output
 476                                    :external-format external-format
 477                                    :if-exists :supersede)
 478              (write character :stream stream :readably t))
 479            (with-open-file (stream file
 480                                    :direction :input
 481                                    :external-format external-format
 482                                    :if-does-not-exist :error)
 483              (assert (char= (read stream) character))))
 484       (ignore-errors
 485         (delete-file file)))))
 486
 487 (with-test (:name (:print-readable :character :utf-8) :skipped-on '(not :sb-unicode))
 488   (test-readable-character (code-char #xfffe) :utf-8))
 489
 490 (with-test (:name (:print-readable :character :iso-8859-1) :skipped-on '(not :sb-unicode))
 491   (test-readable-character (code-char #xfffe) :iso-8859-1))
 492
 493 (with-test (:name (format :character-directive :colon))
 494   (assert (string= (eval '(format nil "~:C" #\a)) "a"))
 495   (assert (string= (format nil (formatter "~:C") #\a) "a")))
 496
 497 ;;; This used to trigger an AVER instead.
 498 (with-test (:name (format :end-of-justification-directive :mismatch))
 499   (assert-error (eval '(formatter "~>")) sb-format:format-error)
 500   (assert-error (eval '(format t "~>")) sb-format:format-error))
 501
 502 ;;; readably printing hash-tables, check for circularity
 503 (with-test (:name (print read hash-table *print-circle*))
 504   (let ((x (cons 1 2))
 505         (h (make-hash-table))
 506         (*print-readably* t)
 507         (*print-circle* t)
 508         (*read-eval* t))
 509     (setf (gethash x h) h)
 510     (destructuring-bind (x2 . h2) (read-from-string (write-to-string (cons x h)))
 511       (assert (equal x x2))
 512       (assert (eq h2 (gethash x2 h2))))))
 513
 514 ;;; an off-by-one error in the ~R format directive until 1.0.15.20
 515 ;;; prevented printing cardinals and ordinals between (expt 10 63) and
 516 ;;; (1- (expt 10 66))
 517 (with-test (:name (format :radix-directive :large-values))
 518   (assert (string= (format nil "~R" (expt 10 63)) "one vigintillion"))
 519   (assert (string= (format nil "~:R" (expt 10 63)) "one vigintillionth")))
 520
 521 ;;; too-clever cacheing for PRINT-OBJECT resulted in a bogus method
 522 ;;; for printing RESTART objects.  Check also CONTROL-STACK-EXHAUSTED
 523 ;;; and HEAP-EXHAUSTED-ERROR.
 524 (with-test (:name (print-object restart condition))
 525   (let ((result (with-output-to-string (*standard-output*)
 526                   (princ (find-restart 'abort)))))
 527     (assert (string/= result "#<" :end1 2)))
 528   (let ((result (with-output-to-string (*standard-output*)
 529                   (princ (make-condition 'sb-kernel::control-stack-exhausted)))))
 530     (assert (string/= result "#<" :end1 2)))
 531   (let ((result (with-output-to-string (*standard-output*)
 532                   (princ (make-condition 'sb-kernel::heap-exhausted-error)))))
 533     (assert (string/= result "#<" :end1 2))))
 534
 535 (with-test (:name (:with-standard-io-syntax :bind-print-pprint-dispatch))
 536   (let ((*print-pprint-dispatch* (copy-pprint-dispatch nil)))
 537     (set-pprint-dispatch 'symbol #'(lambda (stream obj)
 538                                      (declare (ignore obj))
 539                                      (write-string "FOO" stream)))
 540     (with-standard-io-syntax
 541       (let ((*print-pretty* t))
 542         (assert (string= (princ-to-string 'bar) "BAR"))))))
 543
 544 ;;; lp#1398290 (which obsoletes lp#488979)
 545
 546 (defclass a-class-name () ())
 547
 548 (with-test (:name :print-unreadable-no-conditional-newline)
 549   (assert (not (find #\Newline
 550                      (let ((*print-pretty* t)
 551                            (*print-right-margin* 10))
 552                        (format nil "~A" (make-instance 'a-class-name)))
 553                      :test #'char=)))
 554
 555   (assert (not (find #\Newline
 556                      (let ((*print-pretty* nil)
 557                            (*print-right-margin* 10))
 558                        (format nil "~A" (make-instance 'a-class-name)))
 559                      :test #'char=))))
 560
 561 ;;; The PRINT-OBJECT method for RANDOM-STATE used to have a bogus
 562 ;;; dimension argument for MAKE-ARRAY.
 563 (with-test (:name :print-random-state)
 564   (assert (equalp *random-state*
 565                   (read-from-string
 566                    (write-to-string *random-state*)))))
 567
 568 (with-test (:name :write-return-value)
 569   ;; COMPILE is called explicitly because there was a bug in the
 570   ;; compiler-macro for WRITE, which isn't expanded by the evaluator.
 571   (assert (= 123 (funcall (checked-compile '(lambda (s) (write 123 :stream s)))
 572                           (make-broadcast-stream)))))
 573
 574 (with-test (:name :write/write-to-string-compiler-macro-lp/598374+581564)
 575   (let ((test (checked-compile
 576                `(lambda (object &optional output-stream)
 577                   (write object :stream output-stream)))))
 578     (assert (equal "(HELLO WORLD)"
 579                    (with-output-to-string (*standard-output*)
 580                      (let ((list '(hello world)))
 581                        (assert (eq list (funcall test list)))))))
 582     (assert (equal "12"
 583                    (with-output-to-string (*standard-output*)
 584                      (assert (eql 12 (funcall test 12)))))))
 585   (let ((test (checked-compile
 586                `(lambda ()
 587                   (let ((*print-length* 42))
 588                     (write-to-string *print-length* :length nil))))))
 589     (assert (equal "42" (funcall test)))))
 590
 591 (with-test (:name (format :compile-literal-dest-string))
 592   (multiple-value-bind (fun failure-p warnings)
 593       (checked-compile `(lambda (x) (format "~A" x))
 594                        :allow-warnings t)
 595     (declare (ignore fun))
 596     (assert failure-p)
 597     (assert (= (length warnings) 1))))
 598
 599 (with-test (:name :bug-308961)
 600   (assert (string= (format nil "~4,1F" 0.001) " 0.0"))
 601   (assert (string= (format nil "~4,1@F" 0.001) "+0.0"))
 602   (assert (string= (format nil "~E" 0.01) "1.e-2"))
 603   (assert (string= (format nil "~G" 0.01) "1.00e-2")))
 604
 605 (with-test (:name (:fp-print-read-consistency single-float))
 606   (let ((*random-state* (make-random-state t))
 607         (oops))
 608     (loop for f = most-positive-single-float then (/ f 2.0)
 609           while (> f 0.0)
 610           do (loop repeat 10
 611                    for fr = (random f)
 612                    do (unless (eql fr (read-from-string (prin1-to-string fr)))
 613                         (push fr oops)
 614                         (return))))
 615     (loop for f = most-negative-single-float then (/ f 2.0)
 616           while (< f -0.0)
 617           do (loop repeat 10
 618                    for fr = (- (random (- f)))
 619                    do (unless (eql fr (read-from-string (prin1-to-string fr)))
 620                         (push fr oops)
 621                         (return))))
 622     (when oops
 623       (error "FP print-read inconsistencies:~%~:{  ~S => ~S~%~}"
 624              (mapcar (lambda (f)
 625                        (list f (read-from-string (prin1-to-string f))))
 626                      oops)))))
 627
 628 (with-test (:name (:fp-print-read-consistency double-float))
 629   (let ((*random-state* (make-random-state t))
 630         (oops))
 631     ;; FIXME skipping denormalized floats due to bug 793774.
 632     (loop for f = most-positive-double-float then (/ f 2d0)
 633           while (> f 0d0)
 634           do (loop repeat 10
 635                    for fr = (random f)
 636                    do (unless (float-denormalized-p fr)
 637                         (unless (eql fr (read-from-string (prin1-to-string fr)))
 638                           (push fr oops)
 639                           (return)))))
 640     (loop for f = most-negative-double-float then (/ f 2d0)
 641           while (< f -0d0)
 642           do (loop repeat 10
 643                    for fr = (- (random (- f)))
 644                    do (unless (float-denormalized-p fr)
 645                         (unless (eql fr (read-from-string (prin1-to-string fr)))
 646                           (push fr oops)
 647                           (return)))))
 648     (when oops
 649       (error "FP print-read inconsistencies:~%~:{  ~S => ~S~%~}"
 650              (mapcar (lambda (f)
 651                        (list f (read-from-string (prin1-to-string f))))
 652                      oops)))))
 653
 654 (with-test (:name :bug-811386)
 655   (assert (equal "   0.00" (format nil "~7,2,-2f" 0)))
 656   (assert (equal "   0.00" (format nil "~7,2,2f" 0)))
 657   (assert (equal "   0.01" (format nil "~7,2,-2f" 1)))
 658   (assert (equal " 100.00" (format nil "~7,2,2f" 1)))
 659   (assert (equal "   0.00" (format nil "~7,2,-2f" 0.1)))
 660   (assert (equal "  10.00" (format nil "~7,2,2f" 0.1)))
 661   (assert (equal "   0.01" (format nil "~7,2,-2f" 0.5))))
 662
 663 (with-test (:name :bug-867684)
 664   (assert (equal "ab" (format nil "a~0&b"))))
 665
 666 (with-test (:name :print-unreadably-function)
 667   (assert (equal "\"foo\""
 668                  (handler-bind ((print-not-readable #'sb-ext:print-unreadably))
 669                    (let ((*read-eval* nil))
 670                      (write-to-string (coerce "foo" 'base-string) :readably t))))))
 671
 672 (with-test (:name :printing-specialized-arrays-readably)
 673   (let ((*read-eval* t)
 674         (dimss (loop repeat 10
 675                      collect (loop repeat (1+ (random 3))
 676                                    collect (1+ (random 10)))))
 677         (props sb-vm::*specialized-array-element-type-properties*))
 678     (labels ((random-elt (type)
 679                (case type
 680                  (base-char
 681                   (code-char (random 128)))
 682                  (character
 683                   (code-char (random char-code-limit)))
 684                  (single-float
 685                   (+ least-positive-normalized-single-float
 686                      (random most-positive-single-float)))
 687                  (double-float
 688                   (+ least-positive-normalized-double-float
 689                          (random most-positive-double-float)))
 690                  (bit
 691                   (random 2))
 692                  (fixnum
 693                   (random most-positive-fixnum))
 694                  ((t)
 695                   t)
 696                  (otherwise
 697                   (destructuring-bind (type x) type
 698                     (ecase type
 699                       (unsigned-byte
 700                        (random (1- (expt 2 x))))
 701                       (signed-byte
 702                        (- (random (expt 2 (1- x)))))
 703                       (complex
 704                        (complex (random-elt x) (random-elt x)))))))))
 705       (dotimes (i (length props))
 706         (let ((et (sb-vm::saetp-specifier (aref props i))))
 707           (when et
 708             (when (eq 'base-char et)
 709               ;; base-strings not included in the #. printing.
 710               (go :next))
 711             (dolist (dims dimss)
 712               (let ((a (make-array dims :element-type et)))
 713                 (assert (equal et (array-element-type a)))
 714                 (dotimes (i (array-total-size a))
 715                   (setf (row-major-aref a i) (random-elt et)))
 716                 (let ((copy (read-from-string (write-to-string a :readably t))))
 717                   (assert (equal dims (array-dimensions copy)))
 718                   (assert (equal et (array-element-type copy)))
 719                   (assert (equal (array-total-size a) (array-total-size copy)))
 720                   (dotimes (i (array-total-size a))
 721                     (assert (equal (row-major-aref a i) (row-major-aref copy i)))))))))
 722         :next))))
 723
 724 (with-test (:name (format :negative-colinc-and-mincol))
 725   (assert-error (format nil "~-2a" 1))
 726   (assert-error (format nil "~,0a" 1)))
 727
 728 (with-test (:name (format :bug-905817))
 729   ;; The bug manifests itself in an endless loop in FORMAT.
 730   ;; Correct behaviour is to signal an error.
 731   (handler-case
 732       (with-timeout 5
 733         (assert-error (format nil "e~8,0s" 12395)))
 734     (timeout ()
 735       (error "Endless loop in FORMAT"))))
 736
 737 (with-test (:name :format-type-check)
 738   (assert (equal "1/10" (format nil "~2r" 1/2)))
 739   (assert-error (format nil "~r" 1.32) sb-format:format-error)
 740   (assert-error (format nil "~c" 1.32) sb-format:format-error)
 741   (assert (equal "1/10" (eval '(format nil "~2r" 1/2))))
 742   (assert-error (eval '(format nil "~r" 1.32)) sb-format:format-error)
 743   (assert-error (eval '(format nil "~c" 1.32)) sb-format:format-error))
 744
 745 ;; Setup for test of print-object on a class with no proper name.
 746 ;; There are various PRINT-OBJECT tests strewn throughout, all of which
 747 ;; are not in the obvious place to me, except for perhaps 'clos.impure'
 748 ;; which is also not the right place because that file concerns CLOS
 749 ;; behavior in general, not to mention being far too noisy in its output.
 750 (defclass fruit () (a))
 751 (defvar *fruit1* (find-class 'fruit))
 752 (setf (find-class 'fruit) nil)
 753 (defclass fruit () (n o))
 754 (defvar *fruit2* (find-class 'fruit))
 755 (setf (find-class 'fruit) nil)
 756 (defclass fruit () (x))
 757 (with-test (:name (print-object :improper-class-name))
 758   (assert (string/= (write-to-string *fruit1*) (write-to-string *fruit2*)))
 759   (assert (string/= (write-to-string (find-class 'fruit))
 760                     (write-to-string *fruit1*))))
 761
 762 (with-test (:name :format-readably)
 763   (let ((*print-readably* t))
 764     (assert (format nil "~$" #'format))
 765     (assert (format nil "~d" #'format))
 766     (assert (format nil "~x" #'format))
 767     (assert (format nil "~b" #'format))
 768     (assert (format nil "~3r" #'format))
 769     (locally
 770         (declare (notinline format))
 771       (assert (format nil "~$" #'format))
 772       (assert (format nil "~d" #'format))
 773       (assert (format nil "~x" #'format))
 774       (assert (format nil "~b" #'format))
 775       (assert (format nil "~3r" #'format)))))
 776
 777 (with-test (:name (format *print-base*))
 778   (let ((*print-base* 3))
 779     (assert (equal (format nil "~g" '(123)) "(123)"))
 780     (assert (equal (format nil "~f" '(123)) "(123)"))
 781     (assert (equal (format nil "~e" '(123)) "(123)"))
 782     (assert (equal (format nil "~$" '(123)) "(123)"))
 783     (locally
 784         (declare (notinline format))
 785       (assert (equal (format nil "~g" '(123)) "(123)"))
 786       (assert (equal (format nil "~f" '(123)) "(123)"))
 787       (assert (equal (format nil "~e" '(123)) "(123)"))
 788       (assert (equal (format nil "~$" '(123)) "(123)")))))
 789
 790 (with-test (:name (format :concatenate))
 791   (assert (equal
 792            (funcall (checked-compile `(lambda (x) (format nil "~s" (the string x))))
 793                     "\\")
 794            (prin1-to-string "\\"))))
 795
 796 (with-test (:name (write :stream nil))
 797   (assert
 798    (equal
 799     (with-output-to-string (*standard-output*)
 800       (funcall (checked-compile `(lambda () (write "xx" :stream nil)))))
 801     "\"xx\"")))
 802
 803 (define-condition foo () (a))
 804 (defvar *ccc* (make-condition 'foo))
 805 (handler-bind ((warning #'muffle-warning)) (define-condition foo (warning) (a)))
 806 (with-test (:name :write-obsolete-condition)
 807   (assert (search "UNPRINTABLE" (write-to-string *ccc*))))
 808
 809 (with-test (:name (format :no-overeager-compile-time-processing))
 810   (checked-compile '(lambda (x) (format t "~/nopackage:nofun/" x))))
 811
 812 (with-test (:name :print-case-capitalize)
 813   (assert (string= (write-to-string 'fluffy-bunny-count :case :capitalize)
 814                    "Fluffy-Bunny-Count")))
 815
 816 (defclass foo2 () ())
 817 (with-test (:name :print-random-standard-object) ; lp# 1654550
 818   (assert (search "#<FOO2 {" (write-to-string (make-instance 'foo2) :pretty nil)))
 819   (assert (search "#<FOO2 {" (write-to-string (make-instance 'foo2) :pretty t))))