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;;; derived-tests.el --- tests for derived.el -*- lexical-binding: t; -*-
;; Copyright (C) 2017-2024 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/>.
;;; Code:
(require 'ert)
(define-derived-mode derived-tests--parent-mode prog-mode "P"
:after-hook
(let ((f (let ((x "S")) (lambda () x))))
(insert (format "AFP=%s " (let ((x "D")) x (funcall f)))))
(insert "PB "))
(define-derived-mode derived-tests--child-mode derived-tests--parent-mode "C"
:after-hook
(let ((f (let ((x "S")) (lambda () x))))
(insert (format "AFC=%s " (let ((x "D")) x (funcall f)))))
(insert "CB "))
(ert-deftest derived-tests-after-hook-lexical ()
(with-temp-buffer
(let ((derived-tests--child-mode-hook
(lambda () (insert "MH "))))
(derived-tests--child-mode)
(should (equal (buffer-string) "PB CB MH AFP=S AFC=S ")))))
(declare-function mode-a "derived-tests")
(declare-function mode-b "derived-tests")
(declare-function mode-c "derived-tests")
(ert-deftest test-add-font-lock ()
(define-derived-mode mode-a fundamental-mode "mode-a"
(font-lock-add-keywords nil `(("a" 0 'font-lock-keyword-face))))
(define-derived-mode mode-b mode-a "mode-b"
(font-lock-add-keywords nil `(("b" 0 'font-lock-builtin-face))))
(define-derived-mode mode-c mode-b "mode-c"
(font-lock-add-keywords nil `(("c" 0 'font-lock-constant-face))))
(with-temp-buffer
(mode-c)
(should (equal font-lock-keywords
'(t (("c" 0 'font-lock-constant-face)
("b" 0 'font-lock-builtin-face)
("a" 0 'font-lock-keyword-face))
("c" (0 'font-lock-constant-face))
("b" (0 'font-lock-builtin-face))
("a" (0 'font-lock-keyword-face)))))))
;;; derived-tests.el ends here
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