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;;; pkg-tests.el --- tests for src/pkg.c -*- lexical-binding:t -*-
;; Copyright (C) 2022 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'ert)
(require 'ert-x)
(require 'cl-lib)
(defmacro with-packages (packages &rest body)
(declare (indent 1))
(let (vars shoulds makes deletions)
(dolist (p packages)
(let ((name (if (consp p) (cl-first p) p))
(options (if (consp p) (cl-rest p))))
(push `(,name nil) vars)
(push `(should (not (find-package ',name))) shoulds)
(push `(setq ,name (make-package ',name ,@options)) makes)
(push `(when (packagep ,name) (delete-package ,name)) deletions)))
`(let (,@vars)
,@(nreverse shoulds)
(unwind-protect
(progn ,@(nreverse makes) ,@body)
,@(nreverse deletions)))))
(ert-deftest pkg-tests-packagep ()
(should (packagep (make-package "x")))
(should (not (packagep "emacs")))
(should (not (packagep nil))))
(ert-deftest pkg-tests-*package* ()
(should (eq (let ((*package* (find-package "emacs"))) 'good) 'good))
(should-error (let ((*package* :emacs)) nil))
(should-error (let ((*package* 1)) nil))
(should-error (setq *package* :keyword))
(should-error (makunbound *package*))
(with-temp-buffer
(in-package* :emacs-user)
(kill-all-local-variables)
(should (eq *package* (find-package :emacs)))))
(ert-deftest pkg-tests-standard-packages ()
(should (packagep (find-package "emacs")))
(should (packagep (find-package 'emacs)))
(should (packagep (find-package :emacs)))
(should (packagep (find-package "keyword")))
(should (packagep (find-package "")))
(should (eq (find-package "keyword") (find-package ""))))
(ert-deftest pkg-tests-make-package ()
;; Valid package names
(dolist (name '(?a "a" :a a))
(let ((p (make-package name)))
(should (packagep p))
(should (equal (package-name p) "a"))))
(should (packagep (make-package nil)))
;; Invalid package names
(dolist (name '(1.0 (a)))
(should-error (make-package name)))
;; Otherwise invalid forms.
(should-error (make-package))
(should-error (make-package 1.0))
(should-error (make-package :hansi 1))
(should-error (make-package "x" :hansi 1))
(should-error (make-package "x" :nicknames))
(should-error (make-package "x" :use))
(should-error (make-package "x" :nicknames 1))
(should-error (make-package "x" :use 1))
;; Registering package
(let ((p (make-package "x" :nicknames '(y) :register t)))
(unwind-protect
(progn
(should (packagep p))
(should (eq (find-package "x") p))
(should (eq (find-package "y") p)))
(delete-package p))))
(ert-deftest pkg-tests-read ()
(with-packages ((x :register t))
(let* ((symbol-packages nil)
(sym (read "x::y")))
(should (symbolp sym))
(should (equal (symbol-name sym) "x::y"))
(should (eq (symbol-package sym) *emacs-package*))
(setq sym (read ":b"))
(should (keywordp sym))
(should (equal (cl-symbol-name sym) "b"))
(should (equal (symbol-name sym) ":b"))
(should (eq (symbol-package sym) *keyword-package*))))
(with-packages ((x :register t))
(let* ((symbol-packages t)
(sym (read "x::y")))
(should (symbolp sym))
(should (equal (symbol-name sym) "y"))
(should (eq (symbol-package sym) x))
(setq sym (read ":a"))
(should (keywordp sym))
(should (equal (cl-symbol-name sym) "a"))
(should (equal (symbol-name sym) ":a"))
(should (eq (symbol-package sym) *keyword-package*)))))
(ert-deftest pkg-tests-make-package-nicknames ()
;; Valid nicknames
(dolist (nickname '("a" b ?c))
(should (packagep (make-package "x" :nicknames (list nickname)))))
;; Invalid nicknames
(dolist (nickname '(1.0))
(should-error (packagep (make-package "x" :nicknames (list nickname)))))
(with-packages ((x :nicknames '(x z)))
;; Package name allowed in nicknames.
(should (equal (package-nicknames x) '("x" "z"))))
(with-packages ((x :nicknames '(y y z)))
;; Duplicates removed, order-preserving.
(should (equal (package-nicknames x) '("y" "z")))))
(ert-deftest pkg-tests-package-name ()
(should (equal (package-name (make-package "x")) "x"))
(should (equal (package-name (make-package :x)) "x"))
(should (equal (package-name "emacs") "emacs"))
(let ((p (make-package "x")))
(delete-package p)
(should (null (package-name p))))
(should-error (package-name 1)))
(ert-deftest pkg-tests-package-nicknames ()
(let ((nicknames '(("a" "b") (?a :b))))
(dolist (n nicknames)
(let ((p (make-package "x" :nicknames n)))
(should (equal (package-nicknames p) '("a" "b")))))))
(ert-deftest pkg-tests-list-all-packages ()
(let ((all (list-all-packages)))
(should (cl-every #'packagep all))
(should (memq (find-package "emacs") all))
(should (memq (find-package "keyword") all))
(should (memq (find-package "") all))))
(ert-deftest pkg-tests-package-find-package ()
(with-packages (x)
;; If called with a package, returns that package.
(should (eq (find-package x) x))
(package-%register x)
(should-error (find-package 1.0))
(should (eq (find-package 'x) x))
(should (eq (find-package "x") x))
(should (eq (find-package ?x) x))
(should (not (find-package "X"))))
(with-packages ((x :nicknames '("y" "z")))
(package-%register x)
(should (eq (find-package 'y) (find-package 'x)))
(should (eq (find-package 'z) (find-package 'x)))))
(ert-deftest pkg-tests-delete-package ()
(with-packages (x)
(package-%register x)
(should (find-package "x"))
(should (delete-package x))
(should (null (delete-package x)))
(should (null (package-name x)))
(should (not (find-package 'x))))
;; Symbols whose home package is a package that is deleted, become
;; uninterned.
(with-packages (x)
(let ((sym (intern "a" x)))
(delete-package x)
(should (null (symbol-package sym))))))
(ert-deftest pkg-tests-rename-package ()
(with-packages (x y)
(package-%register x)
(should (find-package 'x))
(should (eq x (rename-package x 'a '(b))))
(should (not (find-package 'x)))
(should (eq (find-package 'a) x))
(should (eq (find-package 'b) x))
;; Can't rename to an existing name or nickname.
(should-error (rename-package y 'a))
(should-error (rename-package y 'c :nicknames '("b")))
;; Can't rename deleted package.
(should (delete-package x))
(should-error (rename-package x 'd))))
(ert-deftest pkg-tests-use-package ()
(with-packages (x y)
(let ((sym-a (intern "a" x)))
(should (eq (symbol-package sym-a) x))
(use-package x y)
(cl-multiple-value-bind (sym _status)
(find-symbol "a" y)
(should (null sym))
(when nil
(export sym-a x)
(cl-multiple-value-bind (sym status)
(find-symbol "a" y)
(should (eq sym sym-a))
(should (eq status :inherited))))))))
;; (ert-deftest pkg-tests-find-symbol ()
;; (should nil))
;; (ert-deftest pkg-tests-cl-intern ()
;; (cl-assert (not (find-symbol "foo")))
;; (unwind-protect
;; (progn
;; (cl-intern "foo")
;; (should (find-symbol "foo")))
;; (cl-unintern 'foo)))
;; (ert-deftest pkg-tests-cl-unintern ()
;; (cl-assert (not (find-symbol "foo")))
;; (unwind-protect
;; (progn
;; (cl-intern "foo")
;; (cl-unintern 'foo)
;; (should-not (find-symbol "foo")))
;; (cl-unintern 'foo)))
;; (ert-deftest pkg-tests-package-name ()
;; (should (equal (package-name "emacs") "emacs")))
;; (ert-deftest pkg-tests-export ()
;; (should nil))
;; (ert-deftest pkg-tests-unexport ()
;; (should nil))
;; (ert-deftest pkg-tests-import ()
;; (should nil))
;; (ert-deftest pkg-tests-shadow ()
;; (should nil))
;; (ert-deftest pkg-tests-shadowing-import ()
;; (should nil))
;; (ert-deftest pkg-tests-shadowing-use-package ()
;; (should nil))
;; (ert-deftest pkg-tests-shadowing-unuse-package ()
;; (should nil))
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