tests/loop.pure.lisp

   1 ;;;; miscellaneous tests of LOOP-related stuff
   2
   3 ;;;; This software is part of the SBCL system. See the README file for
   4 ;;;; more information.
   5 ;;;;
   6 ;;;; While most of SBCL is derived from the CMU CL system, the test
   7 ;;;; files (like this one) were written from scratch after the fork
   8 ;;;; from CMU CL.
   9 ;;;;
  10 ;;;; This software is in the public domain and is provided with
  11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  12 ;;;; more information.
  13
  14 (in-package "CL-USER")
  15
  16 ;;; The bug reported by Alexei Dejneka on sbcl-devel 2001-09-03
  17 ;;; is fixed now.
  18 (assert (equal (let ((hash (make-hash-table)))
  19                  (setf (gethash 'key1 hash) 'val1)
  20                  (setf (gethash 'key2 hash) 'val2)
  21                  (sort (loop for key being each hash-key in hash
  22                              collect key)
  23                        #'string<))
  24                '(key1 key2)))
  25
  26 ;;; Bug 81, reported by Wolfhard Buss on cmucl-help 2001-02-14, was
  27 ;;; fixed by Alexey Dejneka's patch on sbcl-devel 2001-09-30.
  28 (assert (equal '(0.0 1.0 2.0 3.0)
  29                (loop with (a . b) of-type float = '(0.0 . 1.0)
  30                      and (c . d) of-type float = '(2.0 . 3.0)
  31                      return (list a b c d))))
  32
  33 ;;; a bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-05:
  34 ;;; The type declarations should apply, hence under Python's
  35 ;;; declarations-are-assertions rule, the code should signal a type
  36 ;;; error.
  37 (assert (typep (nth-value 1
  38                           (ignore-errors
  39                             (funcall (lambda ()
  40                                        (loop with (a . b)
  41                                              of-type float = '(5 . 5)
  42                                              return (list a b))))))
  43                'type-error))
  44
  45 ;;; bug 103, reported by Arthur Lemmens sbcl-devel 2001-05-05,
  46 ;;; fixed by Alexey Dejneka patch sbcl-devel 2001-10-05:
  47 ;;; LOOP syntax requires that forms after INITIALLY, FINALLY, and DO
  48 ;;; must be compound forms.
  49 (multiple-value-bind (function warnings-p failure-p)
  50     (compile nil
  51              '(lambda ()
  52                 (loop while t do
  53                       *print-level*
  54                       (print t))))
  55   (declare (ignore function warnings-p))
  56   (assert failure-p))
  57
  58 ;;; a bug reported by Paul F. Dietz (in his ANSI test suite):
  59 ;;; duplicate bindings in LOOP must signal errors of type
  60 ;;; PROGRAM-ERROR.
  61 (assert (typep (nth-value 1
  62                           (ignore-errors
  63                             (funcall (lambda ()
  64                                        (loop for (a . a) in '((1 . 2) (3 . 4))
  65                                              return a)))))
  66                'program-error))
  67
  68 ;;; similar to gcl/ansi-test LOOP.1.27, and fixed at the same time:
  69 (assert (equal (loop for x downto 7 by 2 from 13 collect x) '(13 11 9 7)))
  70
  71 ;;; some more from gcl/ansi-test:
  72 (let ((table (make-hash-table)))
  73   (setf (gethash 'foo table) '(bar baz))
  74   (assert (= (loop for nil being the hash-keys of table count t) 1))
  75   (assert (equal (loop for nil being the hash-keys of table
  76                                using (hash-value (v1 . v2))
  77                        when v1
  78                          return v2)
  79                  '(baz))))
  80
  81 (assert (= (loop for nil being the external-symbols of :cl count t) 978))
  82 (assert (= (loop for x being the external-symbols of :cl count x) 977))
  83
  84 (let ((*package* (find-package :cl)))
  85   (assert (= (loop for x being each external-symbol count t) 978)))