;;;; tests for problems in the interface presented to the user/programmer

;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
;;;;
;;;; While most of SBCL is derived from the CMU CL system, the test
;;;; files (like this one) were written from scratch after the fork
;;;; from CMU CL.
;;;; 
;;;; This software is in the public domain and is provided with
;;;; absolutely no warranty. See the COPYING and CREDITS files for
;;;; more information.

(in-package :cl-user)

;;;; properties of symbols, e.g. presence of doc strings for public symbols

;;; FIXME: It would probably be good to require here that every
;;; external symbol either has a doc string or has some good excuse
;;; (like being an accessor for a structure which has a doc string).

;;;; tests of interface machinery

;;; APROPOS should accept a package designator, not just a package, and
;;; furthermore do the right thing when it gets a package designator.
;;; (bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-17)
(assert (< 0
	   (length (apropos-list "PRINT" :cl))
	   (length (apropos-list "PRINT"))))
;;; Further, it should correctly deal with the external-only flag (bug
;;; reported by cliini on #lisp IRC 2003-05-30, fixed in sbcl-0.8.0.1x
;;; by CSR)
(assert (= (length (apropos-list "" "CL"))
	   (length (apropos-list "" "CL" t))))
(assert (< 0
	   (length (apropos-list "" "SB-VM" t))
	   (length (apropos-list "" "SB-VM"))))

;;; DESCRIBE shouldn't fail on rank-0 arrays (bug reported and fixed
;;; by Lutz Euler sbcl-devel 2002-12-03)
(describe #0a0)
(describe #(1 2 3))
(describe #2a((1 2) (3 4)))

;;; support for DESCRIBE tests
(defstruct to-be-described a b)
(defclass forward-describe-class (forward-describe-ref) (a))

;;; DESCRIBE should run without signalling an error.
(describe (make-to-be-described))
(describe 12)
(describe "a string")
(describe 'symbolism)
(describe (find-package :cl))
(describe '(a list))
(describe #(a vector))

;;; The DESCRIBE-OBJECT methods for built-in CL stuff should do
;;; FRESH-LINE and TERPRI neatly.
(dolist (i (list (make-to-be-described :a 14) 12 "a string"
		 #0a0 #(1 2 3) #2a((1 2) (3 4)) 'sym :keyword
		 (find-package :keyword) (list 1 2 3)
		 nil (cons 1 2) (make-hash-table)
		 (let ((h (make-hash-table)))
		   (setf (gethash 10 h) 100
			 (gethash 11 h) 121)
		   h)
		 (make-condition 'simple-error)
		 (make-condition 'simple-error :format-control "fc")
		 #'car #'make-to-be-described (lambda (x) (+ x 11))
		 (constantly 'foo) #'(setf to-be-described-a)
		 #'describe-object (find-class 'to-be-described)
		 (find-class 'forward-describe-class)
		 (find-class 'forward-describe-ref) (find-class 'cons)))
  (let ((s (with-output-to-string (s)
	     (write-char #\x s)
	     (describe i s))))
    (unless (and (char= #\x (char s 0))
		 ;; one leading #\NEWLINE from FRESH-LINE or the like, no more
		 (char= #\newline (char s 1))
		 (char/= #\newline (char s 2))
		 ;; one trailing #\NEWLINE from TERPRI or the like, no more
		 (let ((n (length s)))
		   (and (char= #\newline (char s (- n 1)))
			(char/= #\newline (char s (- n 2))))))
      (error "misbehavior in DESCRIBE of ~S" i))))

;;; TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
;;; UPGRADED-COMPLEX-PART-TYPE should be able to deal with NIL as an
;;; environment argument
(typep 1 'fixnum nil)
(subtypep 'fixnum 'integer nil)
(upgraded-array-element-type '(mod 5) nil)
(upgraded-complex-part-type '(single-float 0.0 1.0) nil)

;;; We should have documentation for our extension package:
(assert (documentation (find-package "SB-EXT") t))

;;; DECLARE should not be a special operator
(assert (not (special-operator-p 'declare)))