tests/seq.impure.lisp

   1 ;;;; tests related to sequences
   2
   3 ;;;; This file is impure because we want to be able to use DEFUN.
   4
   5 ;;;; This software is part of the SBCL system. See the README file for
   6 ;;;; more information.
   7 ;;;;
   8 ;;;; While most of SBCL is derived from the CMU CL system, the test
   9 ;;;; files (like this one) were written from scratch after the fork
  10 ;;;; from CMU CL.
  11 ;;;;
  12 ;;;; This software is in the public domain and is provided with
  13 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  14 ;;;; more information.
  15
  16 (load "assertoid.lisp")
  17
  18 (defpackage :seq-test
  19   (:use :cl :assertoid))
  20
  21 (in-package :seq-test)
  22
  23 ;;; helper functions for exercising SEQUENCE code on data of many
  24 ;;; specialized types, and in many different optimization scenarios
  25 (defun for-every-seq-1 (base-seq snippet)
  26   (dolist (seq-type '(list
  27                       (simple-array t 1)
  28                       (vector t)
  29                       (simple-array character 1)
  30                       (vector character)
  31                       (simple-array (signed-byte 4) 1)
  32                       (vector (signed-byte 4))))
  33     (flet ((entirely (eltype)
  34              (every (lambda (el) (typep el eltype)) base-seq)))
  35       (dolist (declaredness '(nil t))
  36         (dolist (optimization '(((speed 3) (space 0))
  37                                 ((speed 2) (space 2))
  38                                 ((speed 1) (space 2))
  39                                 ((speed 0) (space 1))))
  40           (let* ((seq (if (eq seq-type 'list)
  41                           (coerce base-seq 'list)
  42                           (destructuring-bind (type-first &rest type-rest)
  43                               seq-type
  44                             (ecase type-first
  45                               (simple-array
  46                                (destructuring-bind (eltype one) type-rest
  47                                  (assert (= one 1))
  48                                  (if (entirely eltype)
  49                                      (coerce base-seq seq-type)
  50                                      (return))))
  51                               (vector
  52                                (destructuring-bind (eltype) type-rest
  53                                  (if (entirely eltype)
  54                                      (let ((initial-element
  55                                             (cond ((subtypep eltype 'character)
  56                                                    #\!)
  57                                                   ((subtypep eltype 'number)
  58                                                    0)
  59                                                   (t #'error))))
  60                                        (replace (make-array
  61                                                  (+ (length base-seq)
  62                                                     (random 3))
  63                                                  :element-type eltype
  64                                                  :fill-pointer
  65                                                  (length base-seq)
  66                                                  :initial-element
  67                                                  initial-element)
  68                                                 base-seq))
  69                                      (return))))))))
  70                  (lambda-expr `(lambda (seq)
  71                                  ,@(when declaredness
  72                                      `((declare (type ,seq-type seq))))
  73                                  (declare (optimize ,@optimization))
  74                                  ,snippet)))
  75             (format t "~&~S~%" lambda-expr)
  76             (multiple-value-bind (fun warnings-p failure-p)
  77                 (compile nil lambda-expr)
  78               (when (or warnings-p failure-p)
  79                 (error "~@<failed compilation:~2I ~_LAMBDA-EXPR=~S ~_WARNINGS-P=~S ~_FAILURE-P=~S~:@>"
  80                        lambda-expr warnings-p failure-p))
  81               (format t "~&~S ~S~%~S~%~S ~S~%"
  82                       base-seq snippet seq-type declaredness optimization)
  83               (format t "~&(TYPEP SEQ 'SIMPLE-ARRAY)=~S~%"
  84                       (typep seq 'simple-array))
  85               (unless (funcall fun seq)
  86                 (error "~@<failed test:~2I ~_BASE-SEQ=~S ~_SNIPPET=~S ~_SEQ-TYPE=~S ~_DECLAREDNESS=~S ~_OPTIMIZATION=~S~:@>"
  87                        base-seq
  88                        snippet
  89                        seq-type
  90                        declaredness
  91                        optimization)))))))))
  92 (defun for-every-seq (base-seq snippets)
  93   (dolist (snippet snippets)
  94     (for-every-seq-1 base-seq snippet)))
  95
  96 ;;; a wrapper to hide declared type information from the compiler, so
  97 ;;; we don't get stopped by compiler warnings about e.g. compiling
  98 ;;; (POSITION 1 #() :KEY #'ABS) when #() has been coerced to a string.
  99 (defun indiscriminate (fun)
 100   (lambda (&rest rest) (apply fun rest)))
 101
 102 ;;; asymmetric test arg order example from ANSI FIND definition page
 103 (assert (eql #\space ; original example, depends on ASCII character ordering
 104              (find #\d "here are some letters that can be looked at"
 105                    :test #'char>)))
 106 (assert (eql #\e ; modified example, depends only on standard a-z ordering
 107              (find #\f "herearesomeletters" :test #'char>)))
 108 (assert (eql 4 ; modified more, avoids charset technicalities completely
 109              (find 5 '(6 4) :test '>)))
 110
 111 ;;; tests of FIND, POSITION, FIND-IF, and POSITION-IF (and a few for
 112 ;;; deprecated FIND-IF-NOT and POSITION-IF-NOT too)
 113 (for-every-seq #()
 114   '((null (find 1 seq))
 115     (null (find 1 seq :from-end t))
 116     (null (position 1 seq :key (indiscriminate #'abs)))
 117     (null (position nil seq :test (constantly t)))
 118     (null (position nil seq :test nil))
 119     (null (position nil seq :test-not nil))
 120     (null (find-if #'1+ seq :key (indiscriminate #'log)))
 121     (null (position-if #'identity seq :from-end t))
 122     (null (find-if-not #'packagep seq))
 123     (null (position-if-not #'packagep seq :key nil))))
 124 (for-every-seq #(1)
 125   '((null (find 2 seq))
 126     ;; Get the argument ordering for asymmetric tests like #'> right.
 127     ;; (bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-17)
 128     (eql 1 (find 2 seq :test #'>))
 129     (find 2 seq :key #'1+)
 130     (find 1 seq :from-end t)
 131     (null (find 1 seq :from-end t :start 1))
 132     (null (find 0 seq :from-end t))
 133     (eql 0 (position 1 seq :key #'abs))
 134     (null (position nil seq :test 'equal))
 135     (eql 1 (find-if #'1- seq :key #'log))
 136     (eql 0 (position-if #'identity seq :from-end t))
 137     (null (find-if-not #'sin seq))
 138     (eql 0 (position-if-not #'packagep seq :key 'identity))))
 139 (for-every-seq #(1 2 3 2 1)
 140   '((find 3 seq)
 141     (find 3 seq :from-end 'yes)
 142     (eql 1 (position 1.5 seq :test #'<))
 143     (eql 0 (position 0 seq :key '1-))
 144     (eql 4 (position 0 seq :key '1- :from-end t))
 145     (eql 2 (position 4 seq :key '1+))
 146     (eql 2 (position 4 seq :key '1+ :from-end t))
 147     (eql 1 (position 2 seq))
 148     (eql 1 (position 2 seq :start 1))
 149     (null (find 2 seq :start 1 :end 1))
 150     (eql 3 (position 2 seq :start 2))
 151     (eql 3 (position 2 seq :key nil :from-end t))
 152     (eql 2 (position 3 seq :test '=))
 153     (eql 0 (position 3 seq :test-not 'equalp))
 154     (eql 2 (position 3 seq :test 'equal :from-end t))
 155     (null (position 4 seq :test #'eql))
 156     (null (find-if #'packagep seq))
 157     (eql 1 (find-if #'plusp seq))
 158     (eql 3 (position-if #'plusp seq :key #'1- :from-end t))
 159     (eql 1 (position-if #'evenp seq))
 160     (eql 3 (position-if #'evenp seq :from-end t))
 161     (eql 2 (position-if #'plusp seq :from-end nil :key '1- :start 2))
 162     (eql 3 (position-if #'plusp seq :from-end t :key '1- :start 2))
 163     (null (position-if #'plusp seq :from-end t :key '1- :start 2 :end 2))
 164     (null (find-if-not #'plusp seq))
 165     (eql 0 (position-if-not #'evenp seq))))
 166 (for-every-seq "string test"
 167   '((null (find 0 seq))
 168     (null (find #\D seq :key #'char-upcase))
 169     (find #\E seq :key #'char-upcase)
 170     (null (find #\e seq :key #'char-upcase))
 171     (eql 3 (position #\i seq))
 172     (eql 0 (position #\s seq :key #'char-downcase))
 173     (eql 1 (position #\s seq :key #'char-downcase :test #'char/=))
 174     (eql 9 (position #\s seq :from-end t :test #'char=))
 175     (eql 10 (position #\s seq :from-end t :test #'char/=))
 176     (eql 4 (position #\N seq :from-end t :key 'char-upcase :test #'char-equal))
 177     (eql 5 (position-if (lambda (c) (equal #\g c)) seq))
 178     (eql 5 (position-if (lambda (c) (equal #\g c)) seq :from-end t))
 179     (find-if #'characterp seq)
 180     (find-if (lambda (c) (typep c 'base-char)) seq :from-end t)
 181     (null (find-if 'upper-case-p seq))))
 182
 183 ;;; SUBSEQ
 184 (let ((avec (make-array 10
 185                         :fill-pointer 4
 186                         :initial-contents '(0 1 2 3 iv v vi vii iix ix))))
 187   ;; These first five always worked AFAIK.
 188   (assert (equalp (subseq avec 0 3) #(0 1 2)))
 189   (assert (equalp (subseq avec 3 3) #()))
 190   (assert (equalp (subseq avec 1 3) #(1 2)))
 191   (assert (equalp (subseq avec 1) #(1 2 3)))
 192   (assert (equalp (subseq avec 1 4) #(1 2 3)))
 193   ;; SBCL bug found ca. 2002-05-01 by OpenMCL's correct handling of
 194   ;; SUBSEQ, CSR's driving portable cross-compilation far enough to
 195   ;; reach the SUBSEQ calls in assem.lisp, and WHN's sleazy
 196   ;; translation of old CMU CL new-assem.lisp into sufficiently grotty
 197   ;; portable Lisp that it passed suitable illegal values to SUBSEQ to
 198   ;; exercise the bug:-|
 199   ;;
 200   ;; SUBSEQ should check its END value against logical LENGTH, not
 201   ;; physical ARRAY-DIMENSION 0.
 202   ;;
 203   ;; fixed in sbcl-0.7.4.22 by WHN
 204   (assert (null (ignore-errors (aref (subseq avec 1 5) 0)))))
 205
 206 ;;; FILL
 207 (defun test-fill-typecheck (x)
 208   (declare (optimize (safety 3) (space 2) (speed 1)))
 209   (fill (make-string 10) x))
 210
 211 (assert (string= (test-fill-typecheck #\@) "@@@@@@@@@@"))
 212 ;;; BUG 186, fixed in sbcl-0.7.5.5
 213 (assert (null (ignore-errors (test-fill-typecheck 4097))))
 214
 215 ;;; MAKE-SEQUENCE, COERCE, CONCATENATE, MERGE, MAP and requested
 216 ;;; result type (BUGs 46a, 46b, 66)
 217 (macrolet ((assert-type-error (form)
 218              `(assert (typep (nth-value 1 (ignore-errors ,form))
 219                              'type-error))))
 220   (dolist (type-stub '((simple-vector)
 221                        (vector *)
 222                        (vector (signed-byte 8))
 223                        (vector (unsigned-byte 16))
 224                        (vector (signed-byte 32))
 225                        (simple-bit-vector)))
 226     (declare (optimize safety))
 227     (format t "~&~S~%" type-stub)
 228     ;; MAKE-SEQUENCE
 229     (assert (= (length (make-sequence `(,@type-stub) 10)) 10))
 230     (assert (= (length (make-sequence `(,@type-stub 10) 10)) 10))
 231     (assert-type-error (make-sequence `(,@type-stub 10) 11))
 232     ;; COERCE
 233     (assert (= (length (coerce '(0 0 0) `(,@type-stub))) 3))
 234     (assert (= (length (coerce #(0 0 0) `(,@type-stub 3))) 3))
 235     (assert-type-error (coerce #*111 `(,@type-stub 4)))
 236     ;; CONCATENATE
 237     (assert (= (length (concatenate `(,@type-stub) #(0 0 0) #*111)) 6))
 238     (assert (equalp (concatenate `(,@type-stub) #(0 0 0) #*111)
 239                    (coerce #(0 0 0 1 1 1) `(,@type-stub))))
 240     (assert (= (length (concatenate `(,@type-stub 6) #(0 0 0) #*111)) 6))
 241     (assert (equalp (concatenate `(,@type-stub 6) #(0 0 0) #*111)
 242                    (coerce #(0 0 0 1 1 1) `(,@type-stub 6))))
 243     (assert-type-error (concatenate `(,@type-stub 5) #(0 0 0) #*111))
 244     ;; MERGE
 245     (assert (= (length (merge `(,@type-stub) #(0 1 0) #*111 #'>)) 6))
 246     (assert (equalp (merge `(,@type-stub) #(0 1 0) #*111 #'>)
 247                    (coerce #(1 1 1 0 1 0) `(,@type-stub))))
 248     (assert (= (length (merge `(,@type-stub 6) #(0 1 0) #*111 #'>)) 6))
 249     (assert (equalp (merge `(,@type-stub 6) #(0 1 0) #*111 #'>)
 250                    (coerce #(1 1 1 0 1 0) `(,@type-stub 6))))
 251     (assert-type-error (merge `(,@type-stub 4) #(0 1 0) #*111 #'>))
 252     ;; MAP
 253     (assert (= (length (map `(,@type-stub) #'logxor #(0 0 1 1) '(0 1 0 1))) 4))
 254     (assert (equalp (map `(,@type-stub) #'logxor #(0 0 1 1) '(0 1 0 1))
 255                    (coerce #(0 1 1 0) `(,@type-stub))))
 256     (assert (= (length (map `(,@type-stub 4) #'logxor #(0 0 1 1) '(0 1 0 1)))
 257                4))
 258     (assert (equalp (map `(,@type-stub 4) #'logxor #(0 0 1 1) '(0 1 0 1))
 259                    (coerce #(0 1 1 0) `(,@type-stub 4))))
 260     (assert-type-error (map `(,@type-stub 5) #'logxor #(0 0 1 1) '(0 1 0 1))))
 261   ;; some more CONCATENATE tests for strings
 262   (locally
 263       (declare (optimize safety))
 264     (assert (string= (concatenate 'string "foo" " " "bar") "foo bar"))
 265     (assert (string= (concatenate '(string 7) "foo" " " "bar") "foo bar"))
 266     (assert-type-error (concatenate '(string 6) "foo" " " "bar"))
 267     (assert (string= (concatenate '(string 6) "foo" #(#\b #\a #\r)) "foobar"))
 268     (assert-type-error (concatenate '(string 7) "foo" #(#\b #\a #\r))))
 269   ;; Non-VECTOR ARRAY types aren't allowed as vector type specifiers.
 270   (locally
 271     (declare (optimize safety))
 272     (assert-type-error (concatenate 'simple-array "foo" "bar"))
 273     (assert-type-error (map 'simple-array #'identity '(1 2 3)))
 274     (assert (equalp #(11 13)
 275                     (map '(simple-array fixnum (*)) #'+ '(1 2 3) '(10 11))))
 276     (assert-type-error (coerce '(1 2 3) 'simple-array))
 277     (assert-type-error (merge 'simple-array '(1 3) '(2 4) '<))
 278     (assert (equalp #(3 2 1) (coerce '(3 2 1) '(vector fixnum))))
 279     (assert-type-error (map 'array #'identity '(1 2 3)))
 280     (assert-type-error (map '(array fixnum) #'identity '(1 2 3)))
 281     (assert (equalp #(1 2 3) (coerce '(1 2 3) '(vector fixnum))))
 282     ;; but COERCE has an exemption clause:
 283     (assert (string= "foo" (coerce "foo" 'simple-array)))
 284     ;; ... though not in all cases.
 285     (assert-type-error (coerce '(#\f #\o #\o) 'simple-array))))
 286
 287 ;;; As pointed out by Raymond Toy on #lisp IRC, MERGE had some issues
 288 ;;; with user-defined types until sbcl-0.7.8.11
 289 (deftype list-typeoid () 'list)
 290 (assert (equal '(1 2 3 4) (merge 'list-typeoid '(1 3) '(2 4) '<)))
 291 ;;; and also with types that weren't precicely LIST
 292 (assert (equal '(1 2 3 4) (merge 'cons '(1 3) '(2 4) '<)))
 293
 294 ;;; but wait, there's more! The NULL and CONS types also have implicit
 295 ;;; length requirements:
 296 (macrolet ((assert-type-error (form)
 297              `(assert (typep (nth-value 1 (ignore-errors ,form))
 298                              'type-error))))
 299   (locally
 300       (declare (optimize safety))
 301     ;; MAKE-SEQUENCE
 302     (assert-type-error (make-sequence 'cons 0))
 303     (assert-type-error (make-sequence 'null 1))
 304     (assert-type-error (make-sequence '(cons t null) 0))
 305     (assert-type-error (make-sequence '(cons t null) 2))
 306     ;; KLUDGE: I'm not certain that this test actually tests for what
 307     ;; it should test, in that the type deriver and optimizers might
 308     ;; be too smart for the good of an exhaustive test system.
 309     ;; However, it makes me feel good.  -- CSR, 2002-10-18
 310     (assert (null (make-sequence 'null 0)))
 311     (assert (= (length (make-sequence 'cons 3)) 3))
 312     (assert (= (length (make-sequence '(cons t null) 1)) 1))
 313     ;; and NIL is not a valid type for MAKE-SEQUENCE
 314     (assert-type-error (make-sequence 'nil 0))
 315     ;; COERCE
 316     (assert-type-error (coerce #(1) 'null))
 317     (assert-type-error (coerce #() 'cons))
 318     (assert-type-error (coerce #() '(cons t null)))
 319     (assert-type-error (coerce #(1 2) '(cons t null)))
 320     (assert (null (coerce #() 'null)))
 321     (assert (= (length (coerce #(1) 'cons)) 1))
 322     (assert (= (length (coerce #(1) '(cons t null))) 1))
 323     (assert-type-error (coerce #() 'nil))
 324     ;; MERGE
 325     (assert-type-error (merge 'null '(1 3) '(2 4) '<))
 326     (assert-type-error (merge 'cons () () '<))
 327     (assert (null (merge 'null () () '<)))
 328     (assert (= (length (merge 'cons '(1 3) '(2 4) '<)) 4))
 329     (assert (= (length (merge '(cons t (cons t (cons t (cons t null))))
 330                               '(1 3) '(2 4) '<)) 4))
 331     (assert-type-error (merge 'nil () () '<))
 332     ;; CONCATENATE
 333     (assert-type-error (concatenate 'null '(1) "2"))
 334     (assert-type-error (concatenate 'cons #() ()))
 335     (assert-type-error (concatenate '(cons t null) #(1 2 3) #(4 5 6)))
 336     (assert (null (concatenate 'null () #())))
 337     (assert (= (length (concatenate 'cons #() '(1) "2 3")) 4))
 338     (assert (= (length (concatenate '(cons t cons) '(1) "34")) 3))
 339     (assert-type-error (concatenate 'nil '(3)))
 340     ;; FIXME: tests for MAP to come when some brave soul implements
 341     ;; the analogous type checking for MAP/%MAP.
 342     ))
 343 \f
 344 ;;; ELT should signal an error of type TYPE-ERROR if its index
 345 ;;; argument isn't a valid sequence index for sequence:
 346 (defun test-elt-signal (x)
 347   (elt x 3))
 348 (assert (raises-error? (test-elt-signal "foo") type-error))
 349 (assert (eql (test-elt-signal "foob") #\b))
 350 (locally
 351   (declare (optimize (safety 3)))
 352   (assert (raises-error? (elt (list 1 2 3) 3) type-error)))
 353 \f
 354 ;;; confusion in the refactoring led to this signalling an unbound
 355 ;;; variable, not a type error.
 356 (defun svrefalike (x)
 357   (svref x 0))
 358 (assert (raises-error? (svrefalike #*0) type-error))
 359 \f
 360 ;;; checks for uniform bounding index handling under SAFETY 3 code.
 361 ;;;
 362 ;;; KLUDGE: not all in one big form because that causes SBCL to spend
 363 ;;; an absolute age trying to compile it.
 364 (defmacro sequence-bounding-indices-test (&body body)
 365   `(progn
 366     (locally
 367     ;; See Issues 332 [and 333(!)] in the CLHS
 368     (declare (optimize (safety 3)))
 369     (let ((string (make-array 10
 370                               :fill-pointer 5
 371                               :initial-element #\a
 372                               :element-type 'base-char)))
 373         ,(car body)
 374         (format t "... BASE-CHAR")
 375         (finish-output)
 376         (flet ((reset ()
 377                  (setf (fill-pointer string) 10)
 378                  (fill string #\a)
 379                  (setf (fill-pointer string) 5)))
 380           (declare (ignorable #'reset))
 381           ,@(cdr body))))
 382     (locally
 383       ;; See Issues 332 [and 333(!)] in the CLHS
 384       (declare (optimize (safety 3)))
 385       (let ((string (make-array 10
 386                                 :fill-pointer 5
 387                                 :initial-element #\a
 388                                 :element-type 'character)))
 389         ,(car body)
 390         (format t "... CHARACTER")
 391         (finish-output)
 392       (flet ((reset ()
 393                (setf (fill-pointer string) 10)
 394                (fill string #\a)
 395                (setf (fill-pointer string) 5)))
 396         (declare (ignorable #'reset))
 397           ,@(cdr body))))))
 398
 399 (declaim (notinline opaque-identity))
 400 (defun opaque-identity (x) x)
 401 ;;; Accessor SUBSEQ
 402 (sequence-bounding-indices-test
 403  (format t "~&/Accessor SUBSEQ")
 404  (assert (string= (subseq string 0 5) "aaaaa"))
 405  (assert (raises-error? (subseq string 0 6)))
 406  (assert (raises-error? (subseq string (opaque-identity -1) 5)))
 407  (assert (raises-error? (subseq string 4 2)))
 408  (assert (raises-error? (subseq string 6)))
 409  (assert (string= (setf (subseq string 0 5) "abcde") "abcde"))
 410  (assert (string= (subseq string 0 5) "abcde"))
 411  (reset)
 412  (assert (raises-error? (setf (subseq string 0 6) "abcdef")))
 413  (assert (raises-error? (setf (subseq string (opaque-identity -1) 5) "abcdef")))
 414  (assert (raises-error? (setf (subseq string 4 2) "")))
 415  (assert (raises-error? (setf (subseq string 6) "ghij"))))
 416
 417 ;;; Function COUNT, COUNT-IF, COUNT-IF-NOT
 418 (sequence-bounding-indices-test
 419  (format t "~&/Function COUNT, COUNT-IF, COUNT-IF-NOT")
 420  (assert (= (count #\a string :start 0 :end nil) 5))
 421  (assert (= (count #\a string :start 0 :end 5) 5))
 422  (assert (raises-error? (count #\a string :start 0 :end 6)))
 423  (assert (raises-error? (count #\a string :start (opaque-identity -1) :end 5)))
 424  (assert (raises-error? (count #\a string :start 4 :end 2)))
 425  (assert (raises-error? (count #\a string :start 6 :end 9)))
 426  (assert (= (count-if #'alpha-char-p string :start 0 :end nil) 5))
 427  (assert (= (count-if #'alpha-char-p string :start 0 :end 5) 5))
 428  (assert (raises-error?
 429           (count-if #'alpha-char-p string :start 0 :end 6)))
 430  (assert (raises-error?
 431           (count-if #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 432  (assert (raises-error?
 433           (count-if #'alpha-char-p string :start 4 :end 2)))
 434  (assert (raises-error?
 435           (count-if #'alpha-char-p string :start 6 :end 9)))
 436  (assert (= (count-if-not #'alpha-char-p string :start 0 :end nil) 0))
 437  (assert (= (count-if-not #'alpha-char-p string :start 0 :end 5) 0))
 438  (assert (raises-error?
 439           (count-if-not #'alpha-char-p string :start 0 :end 6)))
 440  (assert (raises-error?
 441           (count-if-not #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 442  (assert (raises-error?
 443           (count-if-not #'alpha-char-p string :start 4 :end 2)))
 444  (assert (raises-error?
 445           (count-if-not #'alpha-char-p string :start 6 :end 9))))
 446
 447 ;;; Function FILL
 448 (sequence-bounding-indices-test
 449  (format t "~&/Function FILL")
 450  (assert (string= (fill string #\b :start 0 :end 5) "bbbbb"))
 451  (assert (string= (fill string #\c :start 0 :end nil) "ccccc"))
 452  (assert (raises-error? (fill string #\d :start 0 :end 6)))
 453  (assert (raises-error? (fill string #\d :start (opaque-identity -1) :end 5)))
 454  (assert (raises-error? (fill string #\d :start 4 :end 2)))
 455  (assert (raises-error? (fill string #\d :start 6 :end 9))))
 456
 457 ;;; Function FIND, FIND-IF, FIND-IF-NOT
 458 (sequence-bounding-indices-test
 459  (format t "~&/Function FIND, FIND-IF, FIND-IF-NOT")
 460  (assert (char= (find #\a string :start 0 :end nil) #\a))
 461  (assert (char= (find #\a string :start 0 :end 5) #\a))
 462  (assert (raises-error? (find #\a string :start 0 :end 6)))
 463  (assert (raises-error? (find #\a string :start (opaque-identity -1) :end 5)))
 464  (assert (raises-error? (find #\a string :start 4 :end 2)))
 465  (assert (raises-error? (find #\a string :start 6 :end 9)))
 466  (assert (char= (find-if #'alpha-char-p string :start 0 :end nil) #\a))
 467  (assert (char= (find-if #'alpha-char-p string :start 0 :end 5) #\a))
 468  (assert (raises-error?
 469           (find-if #'alpha-char-p string :start 0 :end 6)))
 470  (assert (raises-error?
 471           (find-if #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 472  (assert (raises-error?
 473           (find-if #'alpha-char-p string :start 4 :end 2)))
 474  (assert (raises-error?
 475           (find-if #'alpha-char-p string :start 6 :end 9)))
 476  (assert (eq (find-if-not #'alpha-char-p string :start 0 :end nil) nil))
 477  (assert (eq (find-if-not #'alpha-char-p string :start 0 :end 5) nil))
 478  (assert (raises-error?
 479           (find-if-not #'alpha-char-p string :start 0 :end 6)))
 480  (assert (raises-error?
 481           (find-if-not #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 482  (assert (raises-error?
 483           (find-if-not #'alpha-char-p string :start 4 :end 2)))
 484  (assert (raises-error?
 485           (find-if-not #'alpha-char-p string :start 6 :end 9))))
 486
 487 ;;; Function MISMATCH
 488 (sequence-bounding-indices-test
 489  (format t "~&/Function MISMATCH")
 490  (assert (null (mismatch string "aaaaa" :start1 0 :end1 nil)))
 491  (assert (= (mismatch "aaab" string :start2 0 :end2 4) 3))
 492  (assert (raises-error? (mismatch "aaaaaa" string :start2 0 :end2 6)))
 493  (assert (raises-error? (mismatch string "aaaaaa" :start1 (opaque-identity -1) :end1 5)))
 494  (assert (raises-error? (mismatch string "" :start1 4 :end1 2)))
 495  (assert (raises-error? (mismatch "aaaa" string :start2 6 :end2 9))))
 496
 497 ;;; Function PARSE-INTEGER
 498 (sequence-bounding-indices-test
 499  (format t "~&/Function PARSE-INTEGER")
 500  (setf (fill-pointer string) 10)
 501  (setf (subseq string 0 10) "1234567890")
 502  (setf (fill-pointer string) 5)
 503  (assert (= (parse-integer string :start 0 :end 5) 12345))
 504  (assert (= (parse-integer string :start 0 :end nil) 12345))
 505  (assert (raises-error? (parse-integer string :start 0 :end 6)))
 506  (assert (raises-error? (parse-integer string :start (opaque-identity -1) :end 5)))
 507  (assert (raises-error? (parse-integer string :start 4 :end 2)))
 508  (assert (raises-error? (parse-integer string :start 6 :end 9))))
 509
 510 ;;; Function PARSE-NAMESTRING
 511 (sequence-bounding-indices-test
 512  (format t "~&/Function PARSE-NAMESTRING")
 513  (setf (fill-pointer string) 10)
 514  (setf (subseq string 0 10) "/dev/ /tmp")
 515  (setf (fill-pointer string) 5)
 516  (assert (truename (parse-namestring string nil *default-pathname-defaults*
 517                                      :start 0 :end 5)))
 518  (assert (truename (parse-namestring string nil *default-pathname-defaults*
 519                                      :start 0 :end nil)))
 520  (assert (raises-error? (parse-namestring string nil
 521                                           *default-pathname-defaults*
 522                                           :start 0 :end 6)))
 523  (assert (raises-error? (parse-namestring string nil
 524                                           *default-pathname-defaults*
 525                                           :start (opaque-identity -1) :end 5)))
 526  (assert (raises-error? (parse-namestring string nil
 527                                           *default-pathname-defaults*
 528                                           :start 4 :end 2)))
 529  (assert (raises-error? (parse-namestring string nil
 530                                           *default-pathname-defaults*
 531                                           :start 6 :end 9))))
 532
 533 ;;; Function POSITION, POSITION-IF, POSITION-IF-NOT
 534 (sequence-bounding-indices-test
 535  (format t "~&/Function POSITION, POSITION-IF, POSITION-IF-NOT")
 536
 537  (assert (= (position #\a string :start 0 :end nil) 0))
 538  (assert (= (position #\a string :start 0 :end 5) 0))
 539  (assert (raises-error? (position #\a string :start 0 :end 6)))
 540  (assert (raises-error? (position #\a string :start (opaque-identity -1) :end 5)))
 541  (assert (raises-error? (position #\a string :start 4 :end 2)))
 542  (assert (raises-error? (position #\a string :start 6 :end 9)))
 543  (assert (= (position-if #'alpha-char-p string :start 0 :end nil) 0))
 544  (assert (= (position-if #'alpha-char-p string :start 0 :end 5) 0))
 545  (assert (raises-error?
 546           (position-if #'alpha-char-p string :start 0 :end 6)))
 547  (assert (raises-error?
 548           (position-if #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 549  (assert (raises-error?
 550           (position-if #'alpha-char-p string :start 4 :end 2)))
 551  (assert (raises-error?
 552           (position-if #'alpha-char-p string :start 6 :end 9)))
 553  (assert (eq (position-if-not #'alpha-char-p string :start 0 :end nil) nil))
 554  (assert (eq (position-if-not #'alpha-char-p string :start 0 :end 5) nil))
 555  (assert (raises-error?
 556           (position-if-not #'alpha-char-p string :start 0 :end 6)))
 557  (assert (raises-error?
 558           (position-if-not #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 559  (assert (raises-error?
 560           (position-if-not #'alpha-char-p string :start 4 :end 2)))
 561  (assert (raises-error?
 562           (position-if-not #'alpha-char-p string :start 6 :end 9))))
 563
 564 ;;; Function READ-FROM-STRING
 565 (sequence-bounding-indices-test
 566  (format t "~&/Function READ-FROM-STRING")
 567  (setf (subseq string 0 5) "(a b)")
 568  (assert (equal (read-from-string string nil nil :start 0 :end 5) '(a b)))
 569  (assert (equal (read-from-string string nil nil :start 0 :end nil) '(a b)))
 570  (assert (raises-error? (read-from-string string nil nil :start 0 :end 6)))
 571  (assert (raises-error? (read-from-string string nil nil :start (opaque-identity -1) :end 5)))
 572  (assert (raises-error? (read-from-string string nil nil :start 4 :end 2)))
 573  (assert (raises-error? (read-from-string string nil nil :start 6 :end 9))))
 574
 575 ;;; Function REDUCE
 576 (sequence-bounding-indices-test
 577  (format t "~&/Function REDUCE")
 578  (setf (subseq string 0 5) "abcde")
 579  (assert (equal (reduce #'list* string :from-end t :start 0 :end nil)
 580                 '(#\a #\b #\c #\d . #\e)))
 581  (assert (equal (reduce #'list* string :from-end t :start 0 :end 5)
 582                 '(#\a #\b #\c #\d . #\e)))
 583  (assert (raises-error? (reduce #'list* string :start 0 :end 6)))
 584  (assert (raises-error? (reduce #'list* string :start (opaque-identity -1) :end 5)))
 585  (assert (raises-error? (reduce #'list* string :start 4 :end 2)))
 586  (assert (raises-error? (reduce #'list* string :start 6 :end 9))))
 587
 588 ;;; Function REMOVE, REMOVE-IF, REMOVE-IF-NOT, DELETE, DELETE-IF,
 589 ;;; DELETE-IF-NOT
 590 (sequence-bounding-indices-test
 591  (format t "~&/Function REMOVE, REMOVE-IF, REMOVE-IF-NOT, ...")
 592  (assert (equal (remove #\a string :start 0 :end nil) ""))
 593  (assert (equal (remove #\a string :start 0 :end 5) ""))
 594  (assert (raises-error? (remove #\a string :start 0 :end 6)))
 595  (assert (raises-error? (remove #\a string :start (opaque-identity -1) :end 5)))
 596  (assert (raises-error? (remove #\a string :start 4 :end 2)))
 597  (assert (raises-error? (remove #\a string :start 6 :end 9)))
 598  (assert (equal (remove-if #'alpha-char-p string :start 0 :end nil) ""))
 599  (assert (equal (remove-if #'alpha-char-p string :start 0 :end 5) ""))
 600  (assert (raises-error?
 601           (remove-if #'alpha-char-p string :start 0 :end 6)))
 602  (assert (raises-error?
 603           (remove-if #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 604  (assert (raises-error?
 605           (remove-if #'alpha-char-p string :start 4 :end 2)))
 606  (assert (raises-error?
 607           (remove-if #'alpha-char-p string :start 6 :end 9)))
 608  (assert (equal (remove-if-not #'alpha-char-p string :start 0 :end nil)
 609                 "aaaaa"))
 610  (assert (equal (remove-if-not #'alpha-char-p string :start 0 :end 5)
 611                 "aaaaa"))
 612  (assert (raises-error?
 613           (remove-if-not #'alpha-char-p string :start 0 :end 6)))
 614  (assert (raises-error?
 615           (remove-if-not #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 616  (assert (raises-error?
 617           (remove-if-not #'alpha-char-p string :start 4 :end 2)))
 618  (assert (raises-error?
 619           (remove-if-not #'alpha-char-p string :start 6 :end 9))))
 620 (sequence-bounding-indices-test
 621  (format t "~&/... DELETE, DELETE-IF, DELETE-IF-NOT")
 622  (assert (equal (delete #\a string :start 0 :end nil) ""))
 623  (reset)
 624  (assert (equal (delete #\a string :start 0 :end 5) ""))
 625  (reset)
 626  (assert (raises-error? (delete #\a string :start 0 :end 6)))
 627  (reset)
 628  (assert (raises-error? (delete #\a string :start (opaque-identity -1) :end 5)))
 629  (reset)
 630  (assert (raises-error? (delete #\a string :start 4 :end 2)))
 631  (reset)
 632  (assert (raises-error? (delete #\a string :start 6 :end 9)))
 633  (reset)
 634  (assert (equal (delete-if #'alpha-char-p string :start 0 :end nil) ""))
 635  (reset)
 636  (assert (equal (delete-if #'alpha-char-p string :start 0 :end 5) ""))
 637  (reset)
 638  (assert (raises-error?
 639           (delete-if #'alpha-char-p string :start 0 :end 6)))
 640  (reset)
 641  (assert (raises-error?
 642           (delete-if #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 643  (reset)
 644  (assert (raises-error?
 645           (delete-if #'alpha-char-p string :start 4 :end 2)))
 646  (reset)
 647  (assert (raises-error?
 648           (delete-if #'alpha-char-p string :start 6 :end 9)))
 649  (reset)
 650  (assert (equal (delete-if-not #'alpha-char-p string :start 0 :end nil)
 651                 "aaaaa"))
 652  (reset)
 653  (assert (equal (delete-if-not #'alpha-char-p string :start 0 :end 5)
 654                 "aaaaa"))
 655  (reset)
 656  (assert (raises-error?
 657           (delete-if-not #'alpha-char-p string :start 0 :end 6)))
 658  (reset)
 659  (assert (raises-error?
 660           (delete-if-not #'alpha-char-p string :start (opaque-identity -1) :end 5)))
 661  (reset)
 662  (assert (raises-error?
 663           (delete-if-not #'alpha-char-p string :start 4 :end 2)))
 664  (reset)
 665  (assert (raises-error?
 666           (delete-if-not #'alpha-char-p string :start 6 :end 9))))
 667
 668 ;;; Function REMOVE-DUPLICATES, DELETE-DUPLICATES
 669 (sequence-bounding-indices-test
 670  (format t "~&/Function REMOVE-DUPLICATES, DELETE-DUPLICATES")
 671  (assert (string= (remove-duplicates string :start 0 :end 5) "a"))
 672  (assert (string= (remove-duplicates string :start 0 :end nil) "a"))
 673  (assert (raises-error? (remove-duplicates string :start 0 :end 6)))
 674  (assert (raises-error? (remove-duplicates string :start (opaque-identity -1) :end 5)))
 675  (assert (raises-error? (remove-duplicates string :start 4 :end 2)))
 676  (assert (raises-error? (remove-duplicates string :start 6 :end 9)))
 677  (assert (string= (delete-duplicates string :start 0 :end 5) "a"))
 678  (reset)
 679  (assert (string= (delete-duplicates string :start 0 :end nil) "a"))
 680  (reset)
 681  (assert (raises-error? (delete-duplicates string :start 0 :end 6)))
 682  (reset)
 683  (assert (raises-error? (delete-duplicates string :start (opaque-identity -1) :end 5)))
 684  (reset)
 685  (assert (raises-error? (delete-duplicates string :start 4 :end 2)))
 686  (reset)
 687  (assert (raises-error? (delete-duplicates string :start 6 :end 9))))
 688
 689 ;;; Function REPLACE
 690 (sequence-bounding-indices-test
 691  (format t "~&/Function REPLACE")
 692  (assert (string= (replace string "bbbbb" :start1 0 :end1 5) "bbbbb"))
 693  (assert (string= (replace (copy-seq "ccccc")
 694                            string
 695                            :start2 0 :end2 nil) "bbbbb"))
 696  (assert (raises-error? (replace string "ccccc" :start1 0 :end1 6)))
 697  (assert (raises-error? (replace string "ccccc" :start2 (opaque-identity -1) :end2 5)))
 698  (assert (raises-error? (replace string "ccccc" :start1 4 :end1 2)))
 699  (assert (raises-error? (replace string "ccccc" :start1 6 :end1 9))))
 700
 701 ;;; Function SEARCH
 702 (sequence-bounding-indices-test
 703  (format t "~&/Function SEARCH")
 704  (assert (= (search "aa" string :start2 0 :end2 5) 0))
 705  (assert (null (search string "aa" :start1 0 :end2 nil)))
 706  (assert (raises-error? (search "aa" string :start2 0 :end2 6)))
 707  (assert (raises-error? (search "aa" string :start2 (opaque-identity -1) :end2 5)))
 708  (assert (raises-error? (search "aa" string :start2 4 :end2 2)))
 709  (assert (raises-error? (search "aa" string :start2 6 :end2 9))))
 710
 711 ;;; Function STRING-UPCASE, STRING-DOWNCASE, STRING-CAPITALIZE,
 712 ;;; NSTRING-UPCASE, NSTRING-DOWNCASE, NSTRING-CAPITALIZE
 713 (defmacro string-case-frob (fn)
 714   `(progn
 715     (assert (raises-error? (,fn string :start 0 :end 6)))
 716     (assert (raises-error? (,fn string :start (opaque-identity -1) :end 5)))
 717     (assert (raises-error? (,fn string :start 4 :end 2)))
 718     (assert (raises-error? (,fn string :start 6 :end 9)))))
 719
 720 (sequence-bounding-indices-test
 721  (format t "~&/Function STRING-UPCASE, STRING-DOWNCASE, STRING-CAPITALIZE, ...")
 722  (string-case-frob string-upcase)
 723  (string-case-frob string-downcase)
 724  (string-case-frob string-capitalize)
 725  (format t "~&/... NSTRING-UPCASE, NSTRING-DOWNCASE, NSTRING-CAPITALIZE")
 726  (string-case-frob nstring-upcase)
 727  (string-case-frob nstring-downcase)
 728  (string-case-frob nstring-capitalize))
 729
 730 ;;; Function STRING=, STRING/=, STRING<, STRING>, STRING<=, STRING>=,
 731 ;;; STRING-EQUAL, STRING-NOT-EQUAL, STRING-LESSP, STRING-GREATERP,
 732 ;;; STRING-NOT-GREATERP, STRING-NOT-LESSP
 733 (defmacro string-predicate-frob (fn)
 734   `(progn
 735     (,fn string "abcde" :start1 0 :end1 5)
 736     (,fn "fghij" string :start2 0 :end2 nil)
 737     (assert (raises-error? (,fn string "klmno"
 738                                 :start1 0 :end1 6)))
 739     (assert (raises-error? (,fn "pqrst" string
 740                                 :start2 (opaque-identity -1) :end2 5)))
 741     (assert (raises-error? (,fn "uvwxy" string
 742                                 :start1 4 :end1 2)))
 743     (assert (raises-error? (,fn string "z" :start2 6 :end2 9)))))
 744 (sequence-bounding-indices-test
 745  (format t "~&/Function STRING=, STRING/=, STRING<, STRING>, STRING<=, STRING>=, ...")
 746  (string-predicate-frob string=)
 747  (string-predicate-frob string/=)
 748  (string-predicate-frob string<)
 749  (string-predicate-frob string>)
 750  (string-predicate-frob string<=)
 751  (string-predicate-frob string>=))
 752 (sequence-bounding-indices-test
 753  (format t "~&/... STRING-EQUAL, STRING-NOT-EQUAL, STRING-LESSP, ...")
 754  (string-predicate-frob string-equal)
 755  (string-predicate-frob string-not-equal)
 756  (string-predicate-frob string-lessp))
 757 (sequence-bounding-indices-test
 758  (format t "~&/... STRING-GREATERP, STRING-NOT-GREATERP, STRING-NOT-LESSP")
 759  (string-predicate-frob string-greaterp)
 760  (string-predicate-frob string-not-greaterp)
 761  (string-predicate-frob string-not-lessp))
 762
 763 ;;; Function SUBSTITUTE, SUBSTITUTE-IF, SUBSTITUTE-IF-NOT,
 764 ;;; NSUBSTITUTE, NSUBSTITUTE-IF, NSUBSTITUTE-IF-NOT
 765 (sequence-bounding-indices-test
 766  (format t "~&/Function SUBSTITUTE, SUBSTITUTE-IF, SUBSTITUTE-IF-NOT, ...")
 767  (assert (string= (substitute #\b #\a string :start 0 :end 5) "bbbbb"))
 768  (assert (string= (substitute #\c #\a string :start 0 :end nil)
 769                   "ccccc"))
 770  (assert (raises-error? (substitute #\b #\a string :start 0 :end 6)))
 771  (assert (raises-error? (substitute #\b #\a string :start (opaque-identity -1) :end 5)))
 772  (assert (raises-error? (substitute #\b #\a string :start 4 :end 2)))
 773  (assert (raises-error? (substitute #\b #\a string :start 6 :end 9)))
 774  (assert (string= (substitute-if #\b #'alpha-char-p string
 775                                  :start 0 :end 5)
 776                   "bbbbb"))
 777  (assert (string= (substitute-if #\c #'alpha-char-p string
 778                                  :start 0 :end nil)
 779                   "ccccc"))
 780  (assert (raises-error? (substitute-if #\b #'alpha-char-p string
 781                                        :start 0 :end 6)))
 782  (assert (raises-error? (substitute-if #\b #'alpha-char-p string
 783                                        :start (opaque-identity -1) :end 5)))
 784  (assert (raises-error? (substitute-if #\b #'alpha-char-p string
 785                                        :start 4 :end 2)))
 786  (assert (raises-error? (substitute-if #\b #'alpha-char-p string
 787                                        :start 6 :end 9)))
 788  (assert (string= (substitute-if-not #\b #'alpha-char-p string
 789                                      :start 0 :end 5)
 790                   "aaaaa"))
 791  (assert (string= (substitute-if-not #\c #'alpha-char-p string
 792                                      :start 0 :end nil)
 793                   "aaaaa"))
 794  (assert (raises-error? (substitute-if-not #\b #'alpha-char-p string
 795                                            :start 0 :end 6)))
 796  (assert (raises-error? (substitute-if-not #\b #'alpha-char-p string
 797                                            :start (opaque-identity -1) :end 5)))
 798  (assert (raises-error? (substitute-if-not #\b #'alpha-char-p string
 799                                            :start 4 :end 2)))
 800  (assert (raises-error? (substitute-if-not #\b #'alpha-char-p string
 801                                            :start 6 :end 9))))
 802 (sequence-bounding-indices-test
 803  (format t "~&/... NSUBSTITUTE, NSUBSTITUTE-IF, NSUBSTITUTE-IF-NOT")
 804  (assert (string= (nsubstitute #\b #\a string :start 0 :end 5) "bbbbb"))
 805  (reset)
 806  (assert (string= (nsubstitute #\c #\a string :start 0 :end nil)
 807                   "ccccc"))
 808  (reset)
 809  (assert (raises-error? (nsubstitute #\b #\a string :start 0 :end 6)))
 810  (reset)
 811  (assert (raises-error? (nsubstitute #\b #\a string :start (opaque-identity -1) :end 5)))
 812  (reset)
 813  (assert (raises-error? (nsubstitute #\b #\a string :start 4 :end 2)))
 814  (reset)
 815  (assert (raises-error? (nsubstitute #\b #\a string :start 6 :end 9)))
 816  (reset)
 817  (assert (string= (nsubstitute-if #\b #'alpha-char-p string
 818                                   :start 0 :end 5)
 819                   "bbbbb"))
 820  (reset)
 821  (assert (string= (nsubstitute-if #\c #'alpha-char-p string
 822                                   :start 0 :end nil)
 823                   "ccccc"))
 824  (reset)
 825  (assert (raises-error? (nsubstitute-if #\b #'alpha-char-p string
 826                                         :start 0 :end 6)))
 827  (reset)
 828  (assert (raises-error? (nsubstitute-if #\b #'alpha-char-p string
 829                                         :start (opaque-identity -1) :end 5)))
 830  (reset)
 831  (assert (raises-error? (nsubstitute-if #\b #'alpha-char-p string
 832                                         :start 4 :end 2)))
 833  (reset)
 834  (assert (raises-error? (nsubstitute-if #\b #'alpha-char-p string
 835                                         :start 6 :end 9)))
 836  (reset)
 837  (assert (string= (nsubstitute-if-not #\b #'alpha-char-p string
 838                                       :start 0 :end 5)
 839                   "aaaaa"))
 840  (reset)
 841  (assert (string= (nsubstitute-if-not #\c #'alpha-char-p string
 842                                       :start 0 :end nil)
 843                   "aaaaa"))
 844  (reset)
 845  (assert (raises-error? (nsubstitute-if-not #\b #'alpha-char-p string
 846                                             :start 0 :end 6)))
 847  (reset)
 848  (assert (raises-error? (nsubstitute-if-not #\b #'alpha-char-p string
 849                                             :start (opaque-identity -1) :end 5)))
 850  (reset)
 851  (assert (raises-error? (nsubstitute-if-not #\b #'alpha-char-p string
 852                                             :start 4 :end 2)))
 853  (reset)
 854  (assert (raises-error? (nsubstitute-if-not #\b #'alpha-char-p string
 855                                             :start 6 :end 9))))
 856 ;;; Function WRITE-STRING, WRITE-LINE
 857 (sequence-bounding-indices-test
 858  (format t "~&/Function WRITE-STRING, WRITE-LINE")
 859  (write-string string *standard-output* :start 0 :end 5)
 860  (write-string string *standard-output* :start 0 :end nil)
 861  (assert (raises-error? (write-string string *standard-output*
 862                                       :start 0 :end 6)))
 863  (assert (raises-error? (write-string string *standard-output*
 864                                       :start (opaque-identity -1) :end 5)))
 865  (assert (raises-error? (write-string string *standard-output*
 866                                       :start 4 :end 2)))
 867  (assert (raises-error? (write-string string *standard-output*
 868                                       :start 6 :end 9)))
 869  (write-line string *standard-output* :start 0 :end 5)
 870  (write-line string *standard-output* :start 0 :end nil)
 871  (assert (raises-error? (write-line string *standard-output*
 872                                       :start 0 :end 6)))
 873  (assert (raises-error? (write-line string *standard-output*
 874                                       :start (opaque-identity -1) :end 5)))
 875  (assert (raises-error? (write-line string *standard-output*
 876                                       :start 4 :end 2)))
 877  (assert (raises-error? (write-line string *standard-output*
 878                                       :start 6 :end 9))))
 879
 880 ;;; Macro WITH-INPUT-FROM-STRING
 881 (sequence-bounding-indices-test
 882  (format t "~&/Macro WITH-INPUT-FROM-STRING")
 883  (with-input-from-string (s string :start 0 :end 5)
 884    (assert (char= (read-char s) #\a)))
 885  (with-input-from-string (s string :start 0 :end nil)
 886    (assert (char= (read-char s) #\a)))
 887  (assert (raises-error?
 888           (with-input-from-string (s string :start 0 :end 6)
 889             (read-char s))))
 890  (assert (raises-error?
 891           (with-input-from-string (s string :start (opaque-identity -1) :end 5)
 892             (read-char s))))
 893  (assert (raises-error?
 894           (with-input-from-string (s string :start 4 :end 2)
 895             (read-char s))))
 896  (assert (raises-error?
 897           (with-input-from-string (s string :start 6 :end 9)
 898             (read-char s)))))
 899 \f
 900 ;;; testing bit-bashing according to _The Practice of Programming_
 901 (defun fill-bytes-for-testing (bitsize)
 902   "Return a list of 'bytes' of type (MOD BITSIZE)."
 903   (remove-duplicates (list 0
 904                            (1- (ash 1 (1- bitsize)))
 905                            (ash 1 (1- bitsize))
 906                            (1- (ash 1 bitsize)))))
 907
 908 (defun fill-with-known-value (value size &rest vectors)
 909   (dolist (vec vectors)
 910     (dotimes (i size)
 911       (setf (aref vec i) value))))
 912
 913 (defun collect-fill-amounts (n-power)
 914   (remove-duplicates
 915    (loop for i from 0 upto n-power
 916          collect (1- (expt 2 i))
 917          collect (expt 2 i)
 918          collect (1+ (expt 2 i)))))
 919
 920 (defun test-fill-bashing (bitsize padding-amount n-power)
 921   (let* ((size (+ (* padding-amount 2) (expt 2 n-power) (* padding-amount 2)))
 922          (standard (make-array size :element-type `(unsigned-byte ,bitsize)))
 923          (bashed (make-array size :element-type `(unsigned-byte ,bitsize)))
 924          (fill-amounts (collect-fill-amounts n-power))
 925          (bash-function (intern (format nil "UB~A-BASH-FILL" bitsize)
 926                                 (find-package "SB-KERNEL"))))
 927     (format t "~&/Function ~A..." bash-function)
 928     (loop for offset from padding-amount below (* 2 padding-amount) do
 929           (dolist (c (fill-bytes-for-testing bitsize))
 930             (dolist (n fill-amounts)
 931               (fill-with-known-value (mod (lognot c) (ash 1 bitsize)) n
 932                                      standard bashed)
 933               ;; fill vectors
 934               ;; a) the standard slow way
 935               (fill standard c :start offset :end (+ offset n))
 936               ;; b) the blazingly fast way
 937               (let ((value (loop for i from 0 by bitsize
 938                                  until (= i sb-vm:n-word-bits)
 939                                  sum (ash c i))))
 940                 (funcall bash-function value bashed offset n))
 941               ;; check for errors
 942               (when (mismatch standard bashed)
 943                 (format t "Test with offset ~A, fill ~A and length ~A failed.~%"
 944                         offset c n)
 945                 (format t "Mismatch: ~A ~A~%"
 946                         (subseq standard 0 (+ offset n 1))
 947                         (subseq bashed 0 (+ offset n 1)))
 948                 (return-from test-fill-bashing nil))))
 949           finally (return t))))
 950
 951 (defun test-copy-bashing (bitsize padding-amount n-power)
 952   (let* ((size (+ (* padding-amount 2) (expt 2 n-power) (* padding-amount 2)))
 953          (standard-dst (make-array size :element-type `(unsigned-byte ,bitsize)))
 954          (bashed-dst (make-array size :element-type `(unsigned-byte ,bitsize)))
 955          (source (make-array size :element-type `(unsigned-byte ,bitsize)))
 956          (fill-amounts (collect-fill-amounts n-power))
 957          (bash-function (intern (format nil "UB~A-BASH-COPY" bitsize)
 958                                 (find-package "SB-KERNEL"))))
 959     (format t "~&/Function ~A..." bash-function)
 960     (do ((source-offset padding-amount (1+ source-offset)))
 961         ((>= source-offset (* padding-amount 2))
 962          ;; success!
 963          t)
 964      (do ((target-offset padding-amount (1+ target-offset)))
 965          ((>= target-offset (* padding-amount 2)))
 966        (dolist (c (fill-bytes-for-testing bitsize))
 967          (dolist (n fill-amounts)
 968            (fill-with-known-value (mod (lognot c) (ash 1 bitsize)) size
 969                                   source standard-dst bashed-dst)
 970            ;; fill with test data
 971            (fill source c :start source-offset :end (+ source-offset n))
 972            ;; copy filled test data to test vectors
 973            ;; a) the slow way
 974            (replace standard-dst source
 975                     :start1 target-offset :end1 (+ target-offset n)
 976                     :start2 source-offset :end2 (+ source-offset n))
 977            ;; b) the blazingly fast way
 978            (funcall bash-function source source-offset
 979                     bashed-dst target-offset n)
 980            ;; check for errors
 981            (when (mismatch standard-dst bashed-dst)
 982              (format t "Test with target-offset ~A, source-offset ~A, fill ~A, and length ~A failed.~%"
 983                      target-offset source-offset c n)
 984              (format t "Mismatch:~% correct ~A~% actual  ~A~%"
 985                      standard-dst
 986                      bashed-dst)
 987              (return-from test-copy-bashing nil))))))))
 988
 989 (loop for i = 1 then (* i 2) do
 990      ;; the bare '32' here is fairly arbitrary; '8' provides a good
 991      ;; range of lengths over which to fill and copy, which should tease
 992      ;; out most errors in the code (if any exist).  (It also makes this
 993      ;; part of the test suite finish reasonably quickly.)
 994      (assert (test-fill-bashing i 32 8))
 995      (assert (test-copy-bashing i 32 8))
 996      until (= i sb-vm:n-word-bits))
 997 \f
 998 ;;; success