;;;; miscellaneous tests of package-related stuff

;;;; 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.

(make-package "FOO")
(defvar *foo* (find-package (coerce "FOO" 'base-string)))
(rename-package "FOO" (make-array 0 :element-type nil))
(assert (eq *foo* (find-package "")))
(assert (delete-package ""))

(handler-case
    (export :foo)
  (package-error (c) (princ c))
  (:no-error (&rest args) (error "(EXPORT :FOO) returned ~S" args)))

(make-package "FOO")
(assert (shadow #\a :foo))

(defpackage :PACKAGE-DESIGNATOR-1 (:use #.(find-package :cl)))

(defpackage :PACKAGE-DESIGNATOR-2
  (:import-from #.(find-package :cl) "+"))

(defpackage "EXAMPLE-INDIRECT"
  (:import-from "CL" "+"))

(defpackage "EXAMPLE-PACKAGE"
  (:shadow "CAR")
  (:shadowing-import-from "CL" "CAAR")
  (:use)
  (:import-from "CL" "CDR")
  (:import-from "EXAMPLE-INDIRECT" "+")
  (:export "CAR" "CDR" "EXAMPLE"))

(flet ((check-symbol (name expected-status expected-home-name)
         (multiple-value-bind (symbol status)
             (find-symbol name "EXAMPLE-PACKAGE")
           (let ((home (symbol-package symbol))
                 (expected-home (find-package expected-home-name)))
             (assert (eql home expected-home))
             (assert (eql status expected-status))))))
  (check-symbol "CAR" :external "EXAMPLE-PACKAGE")
  (check-symbol "CDR" :external "CL")
  (check-symbol "EXAMPLE" :external "EXAMPLE-PACKAGE")
  (check-symbol "CAAR" :internal "CL")
  (check-symbol "+" :internal "CL")
  (check-symbol "CDDR" nil "CL"))

(defpackage "TEST-ORIGINAL" (:nicknames "A-NICKNAME"))

(assert (raises-error? (defpackage "A-NICKNAME")))

(assert (eql (find-package "A-NICKNAME")
             (find-package "TEST-ORIGINAL")))