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;;; loadhist-tests.el --- Tests for loadhist.el -*- lexical-binding:t -*-
;; Copyright (C) 2021-2024 Free Software Foundation, Inc.
;; Author: Stefan Kangas <stefankangas@gmail.com>
;; 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 'loadhist)
(ert-deftest loadhist-tests-feature-symbols ()
(should (equal (file-name-base (car (feature-symbols 'loadhist))) "loadhist"))
(should-not (feature-symbols 'non-existent-feature)))
(ert-deftest loadhist-tests-feature-file ()
(should (equal (file-name-base (feature-file 'loadhist)) "loadhist"))
(should-error (feature-file 'non-existent-feature)))
(ert-deftest loadhist-tests-file-loadhist-lookup ()
;; This should probably be extended...
(should (listp (file-loadhist-lookup "loadhist"))))
(ert-deftest loadhist-tests-file-provides ()
(should (eq (car (file-provides "loadhist")) 'loadhist)))
(ert-deftest loadhist-tests-file-requires ()
(should-not (file-requires "loadhist")))
(ert-deftest loadhist-tests-file-dependents ()
(require 'dired-x)
(let ((deps (file-dependents "dired")))
(should (member "dired-x" (mapcar #'file-name-base deps)))))
(ert-deftest loadhist-tests-unload-feature ()
(require 'dired-x)
(should-error (unload-feature 'dired))
(unload-feature 'dired-x))
(defvar loadhist--tests-dir (file-name-directory (macroexp-file-name)))
(ert-deftest loadhist-tests-unload-feature-nested ()
(add-to-list 'load-path (expand-file-name
"loadhist-resources/"
loadhist--tests-dir))
(declare-function loadhist--foo-inc "loadhist--foo")
(declare-function loadhist--bar-dec "loadhist--dec")
(load "loadhist--foo" nil t)
(should (and (functionp 'loadhist--bar-dec) (functionp 'loadhist--foo-inc)))
(should (autoloadp (symbol-function 'loadhist--bar-dec)))
(load "loadhist--bar" nil t)
(should (and (functionp 'loadhist--bar-dec) (functionp 'loadhist--foo-inc)))
(should (not (autoloadp (symbol-function 'loadhist--bar-dec))))
(should (not (autoloadp (symbol-function 'loadhist--foo-inc))))
(should (equal (list 40 42)
(list (loadhist--bar-dec 41) (loadhist--foo-inc 41))))
(unload-feature 'loadhist--bar)
(should (and (functionp 'loadhist--bar-dec) (functionp 'loadhist--foo-inc)))
(should (autoloadp (symbol-function 'loadhist--bar-dec)))
(should (not (autoloadp (symbol-function 'loadhist--foo-inc))))
(unload-feature 'loadhist--foo)
(should (null (symbol-function 'loadhist--bar-dec)))
(should (null (symbol-function 'loadhist--foo-inc)))
(should (null (get 'loadhist--bar-dec 'function-history)))
(should (null (get 'loadhist--foo-inc 'function-history))))
(ert-deftest loadhist-tests-unload-feature-notnested ()
(add-to-list 'load-path (expand-file-name
"loadhist-resources/"
loadhist--tests-dir))
(load "loadhist--foo" nil t)
(load "loadhist--bar" nil t)
(should (equal (list 40 42)
(list (loadhist--bar-dec 41) (loadhist--foo-inc 41))))
(unload-feature 'loadhist--foo)
(should (functionp 'loadhist--bar-dec))
(should (not (autoloadp (symbol-function 'loadhist--bar-dec))))
(should (let ((f (symbol-function 'loadhist--foo-inc)))
;; Both choices seem acceptable.
(or (null f) (autoloadp f))))
(unload-feature 'loadhist--bar)
(should (null (symbol-function 'loadhist--bar-dec)))
(should (null (symbol-function 'loadhist--foo-inc)))
(should (null (get 'loadhist--bar-dec 'function-history)))
(should (null (get 'loadhist--foo-inc 'function-history))))
;;; loadhist-tests.el ends here
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