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| | ;;; nadvice-tests.el --- Test suite for the new advice thingy. -*- lexical-binding:t -*-
;; Copyright (C) 2012-2023 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)
(ert-deftest advice-tests-nadvice ()
"Test nadvice code."
(advice-add 'sm-test1 :around (lambda (f y) (* (funcall f y) 5)))
(advice-add 'sm-test1 :around (lambda (f y) (* (funcall f y) 2)))
(advice-remove 'sm-test1 (lambda (f y) (* (funcall f y) 5)))
(defun sm-test1 (x) (+ x 4))
(should (equal (sm-test1 6) 20))
(advice-remove 'sm-test1 (lambda (f y) (* (funcall f y) 2)))
(should (equal (sm-test1 6) 10))
(advice-add 'sm-test1 :around (lambda (f y) (* (funcall f y) 5)))
(should (equal (sm-test1 6) 50))
(defun sm-test1 (x) (+ x 14))
(should (equal (sm-test1 6) 100))
(should (equal (null (get 'sm-test1 'defalias-fset-function)) nil))
(advice-remove 'sm-test1 (lambda (f y) (* (funcall f y) 5)))
(should (equal (sm-test1 6) 20))
(should (equal (get 'sm-test1 'defalias-fset-function) nil))
(advice-add 'sm-test3 :around
(lambda (f &rest args) `(toto ,(apply f args)))
'((name . wrap-with-toto)))
(defmacro sm-test3 (x) `(call-test3 ,x))
(should (equal (macroexpand '(sm-test3 56)) '(toto (call-test3 56)))))
(ert-deftest advice-tests-macroaliases ()
"Test nadvice code on aliases to macros."
(defmacro sm-test1 (a) `(list ',a))
(defalias 'sm-test1-alias 'sm-test1)
(should (equal (macroexpand '(sm-test1-alias 5)) '(list '5)))
(advice-add 'sm-test1-alias :around
(lambda (f &rest args) `(cons 1 ,(apply f args))))
(should (equal (macroexpand '(sm-test1-alias 5)) '(cons 1 (list '5))))
(defmacro sm-test1 (a) `(list 0 ',a))
(should (equal (macroexpand '(sm-test1-alias 5)) '(cons 1 (list 0 '5)))))
(ert-deftest advice-tests-advice ()
"Test advice code."
(defun sm-test2 (x) (+ x 4))
(should (equal (sm-test2 6) 10))
(defadvice sm-test2 (around sm-test activate)
ad-do-it (setq ad-return-value (* ad-return-value 5)))
(should (equal (sm-test2 6) 50))
(ad-deactivate 'sm-test2)
(should (equal (sm-test2 6) 10))
(ad-activate 'sm-test2)
(should (equal (sm-test2 6) 50))
(defun sm-test2 (x) (+ x 14))
(should (equal (sm-test2 6) 100))
(should (equal (null (get 'sm-test2 'defalias-fset-function)) nil))
(ad-remove-advice 'sm-test2 'around 'sm-test)
(should (equal (sm-test2 6) 100))
(ad-activate 'sm-test2)
(should (equal (sm-test2 6) 20))
(should (equal (null (get 'sm-test2 'defalias-fset-function)) t))
(defadvice sm-test4 (around wrap-with-toto activate)
ad-do-it (setq ad-return-value `(toto ,ad-return-value)))
(defmacro sm-test4 (x) `(call-test4 ,x))
(should (equal (macroexpand '(sm-test4 56)) '(toto (call-test4 56))))
(defmacro sm-test4 (x) `(call-testq ,x))
(should (equal (macroexpand '(sm-test4 56)) '(toto (call-testq 56))))
;; This used to signal an error (bug#12858).
(autoload 'sm-test6 "foo")
(defadvice sm-test6 (around test activate)
ad-do-it))
(ert-deftest advice-tests-combination ()
"Combining old style and new style advices."
(defun sm-test5 (x) (+ x 4))
(should (equal (sm-test5 6) 10))
(advice-add 'sm-test5 :around (lambda (f y) (* (funcall f y) 5)))
(should (equal (sm-test5 6) 50))
(defadvice sm-test5 (around test activate)
ad-do-it (setq ad-return-value (+ ad-return-value 0.1)))
(should (equal (sm-test5 5) 45.1))
(ad-deactivate 'sm-test5)
(should (equal (sm-test5 6) 50))
(ad-activate 'sm-test5)
(should (equal (sm-test5 6) 50.1))
(defun sm-test5 (x) (+ x 14))
(should (equal (sm-test5 6) 100.1))
(advice-remove 'sm-test5 (lambda (f y) (* (funcall f y) 5)))
(should (equal (sm-test5 6) 20.1)))
(ert-deftest advice-test-called-interactively-p ()
"Check interaction between advice and called-interactively-p."
(defun sm-test7 (&optional x) (interactive) (+ (or x 7) 4))
(advice-add 'sm-test7 :around
(lambda (f &rest args)
(list (cons 1 (called-interactively-p)) (apply f args))))
(should (equal (sm-test7) '((1 . nil) 11)))
(should (equal (call-interactively 'sm-test7) '((1 . t) 11)))
(let ((smi 7))
(advice-add 'sm-test7 :before
(lambda (&rest args)
(setq smi (called-interactively-p))))
(should (equal (list (sm-test7) smi)
'(((1 . nil) 11) nil)))
(should (equal (list (call-interactively 'sm-test7) smi)
'(((1 . t) 11) t))))
(advice-add 'sm-test7 :around
(lambda (f &rest args)
(cons (cons 2 (called-interactively-p)) (apply f args))))
(should (equal (call-interactively 'sm-test7) '((2 . t) (1 . t) 11))))
(ert-deftest advice-test-called-interactively-p-around ()
"Check interaction between around advice and called-interactively-p.
This tests the currently broken case of the innermost advice to a
function being an around advice."
:expected-result :failed
(defun sm-test7.2 () (interactive) (cons 1 (called-interactively-p)))
(advice-add 'sm-test7.2 :around
(lambda (f &rest args)
(list (cons 1 (called-interactively-p)) (apply f args))))
(should (equal (sm-test7.2) '((1 . nil) (1 . nil))))
(should (equal (call-interactively 'sm-test7.2) '((1 . t) (1 . t)))))
(ert-deftest advice-test-called-interactively-p-filter-args ()
"Check interaction between filter-args advice and called-interactively-p."
(defun sm-test7.3 () (interactive) (cons 1 (called-interactively-p)))
(advice-add 'sm-test7.3 :filter-args #'identity)
(should (equal (sm-test7.3) '(1 . nil)))
(should (equal (call-interactively 'sm-test7.3) '(1 . t))))
(ert-deftest advice-test-call-interactively ()
"Check interaction between advice on call-interactively and called-interactively-p."
(let ((sm-test7.4 (lambda () (interactive) (cons 1 (called-interactively-p))))
(old (symbol-function 'call-interactively)))
(unwind-protect
(progn
(advice-add 'call-interactively :before #'ignore)
(should (equal (funcall sm-test7.4) '(1 . nil)))
(should (equal (call-interactively sm-test7.4) '(1 . t))))
(advice-remove 'call-interactively #'ignore)
(should (eq (symbol-function 'call-interactively) old)))))
(ert-deftest advice-test-called-interactively-p-around-careful ()
"Like sm-test7.2 but defensively preserve interactive context."
(defun sm-test7.5 () (interactive) (cons 1 (called-interactively-p)))
(advice-add 'sm-test7.5 :around
(lambda (f &rest args)
(list (cons 1 (called-interactively-p))
(if (called-interactively-p)
(call-interactively f)
(apply f args)))))
(should (equal (sm-test7.5) '((1 . nil) (1 . nil))))
(should (equal (call-interactively 'sm-test7.5) '((1 . t) (1 . t)))))
(ert-deftest advice-test-interactive ()
"Check handling of interactive spec."
(defun sm-test8 (a) (interactive "p") a)
(defadvice sm-test8 (before adv1 activate) nil)
(defadvice sm-test8 (before adv2 activate) (interactive "P") nil)
(should (equal (interactive-form 'sm-test8) '(interactive "P"))))
(ert-deftest advice-test-preactivate ()
(should (equal (null (get 'sm-test9 'defalias-fset-function)) t))
(defun sm-test9 (a) (interactive "p") a)
(should (equal (null (get 'sm-test9 'defalias-fset-function)) t))
(defadvice sm-test9 (before adv1 pre act protect compile) nil)
(should (equal (null (get 'sm-test9 'defalias-fset-function)) nil))
(defadvice sm-test9 (before adv2 pre act protect compile)
(interactive "P") nil)
(should (equal (interactive-form 'sm-test9) '(interactive "P"))))
(ert-deftest advice-test-multiples ()
(let ((sm-test10 (lambda (a) (+ a 10)))
(sm-advice (lambda (x) (if (consp x) (list (* 5 (car x))) (* 4 x)))))
(should (equal (funcall sm-test10 5) 15))
(add-function :filter-args (var sm-test10) sm-advice)
(should (advice-function-member-p sm-advice sm-test10))
(should (equal (funcall sm-test10 5) 35))
(add-function :filter-return (var sm-test10) sm-advice)
(should (equal (funcall sm-test10 5) 60))
;; Make sure we can add multiple times the same function, under the
;; condition that they have different `name' properties.
(add-function :filter-args (var sm-test10) sm-advice '((name . "args")))
(should (equal (funcall sm-test10 5) 140))
(remove-function (var sm-test10) "args")
(should (equal (funcall sm-test10 5) 60))
(add-function :filter-args (var sm-test10) sm-advice '((name . "args")))
(add-function :filter-return (var sm-test10) sm-advice '((name . "ret")))
(should (equal (funcall sm-test10 5) 560))
;; Make sure that if we specify to remove a function that was added
;; multiple times, they are all removed, rather than removing only some
;; arbitrary subset of them.
(remove-function (var sm-test10) sm-advice)
(should (equal (funcall sm-test10 5) 15))))
(ert-deftest advice-test-print ()
(let ((x (list 'cdr)))
(add-function :after (car x) 'car)
(should (equal (cl-prin1-to-string (car x))
"#f(advice car :after cdr)"))
(add-function :before (car x) 'first)
(should (equal (cl-prin1-to-string (car x))
"#f(advice first :before #f(advice car :after cdr))"))))
;; Local Variables:
;; no-byte-compile: t
;; End:
;;; nadvice-tests.el ends here
|