tests/extended-sequences.impure.lisp

   1 ;;;; Tests related to extended sequences.
   2
   3 ;;;; This file is impure because we want to be able to define methods
   4 ;;;; implementing the extended sequence protocol.
   5
   6 ;;;; This software is part of the SBCL system. See the README file for
   7 ;;;; more information.
   8 ;;;;
   9 ;;;; While most of SBCL is derived from the CMU CL system, the test
  10 ;;;; files (like this one) were written from scratch after the fork
  11 ;;;; from CMU CL.
  12 ;;;;
  13 ;;;; This software is in the public domain and is provided with
  14 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
  15 ;;;; more information.
  16
  17 (load "test-util.lisp")
  18 (load "assertoid.lisp")
  19
  20 ;;; For the following situation:
  21 ;;; - result type is a type specifier designating a DEFTYPEd type
  22 ;;; - the type expands to a the name of a user-defined sequence class
  23 ;;; - not all mandatory sequence protocol methods are define for the
  24 ;;;   user-define sequence class
  25 ;;; MAKE-SEQUENCE used to signal a SIMPLE-TYPE-ERROR referring to the
  26 ;;; unexpanded type specifier, instead of signaling a
  27 ;;; SEQUENCE:PROTOCOL-UNIMPLEMENTED error.
  28 (defclass bug-1315846-simple-sequence (sequence) ())
  29
  30 (deftype bug-1315846-sequence ()
  31   'bug-1315846-simple-sequence)
  32
  33 (with-test (:name (make-sequence deftype :bug-1315846))
  34   (assert-error (make-sequence 'bug-1315846-sequence 10)
  35                 sequence::protocol-unimplemented))
  36
  37 (defclass extended-sequence (sequence standard-object) ())
  38
  39 (defmethod sequence:length ((sequence extended-sequence))
  40   3)
  41
  42 (defmethod sequence:make-sequence-like ((sequence extended-sequence) (length t)
  43                                         &key &allow-other-keys)
  44   (make-instance 'extended-sequence))
  45
  46 (defmethod (setf sequence:elt) ((new-value t) (sequence extended-sequence) (index t))
  47   new-value)
  48
  49 (with-test (:name (make-sequence :type-specifier class))
  50   (make-sequence (find-class 'extended-sequence) 3))
  51
  52 (with-test (:name (map make-sequence :result-creation))
  53   (assert (typep (map 'extended-sequence #'1+ '(1 2 3)) 'extended-sequence)))