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61 lines
2.1 KiB
EmacsLisp
61 lines
2.1 KiB
EmacsLisp
;;; jit-lock-tests.el --- tests for jit-lock -*- lexical-binding:t -*-
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;; Copyright (C) 2016-2021 Free Software Foundation, Inc.
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;; Author: Dmitry Gutov <dgutov@yandex.ru>
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'jit-lock)
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(require 'ert-x)
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(defun jit-lock-tests--setup-buffer ()
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(setq font-lock-defaults '(nil t))
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(let (noninteractive)
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(font-lock-mode)))
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(ert-deftest jit-lock-fontify-now-fontifies-a-new-buffer ()
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(ert-with-test-buffer (:name "xxx")
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(jit-lock-tests--setup-buffer)
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(insert "xyz")
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(jit-lock-fontify-now (point-min) (point-max))
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(should-not (text-property-not-all (point-min) (point-max) 'fontified t))))
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(ert-deftest jit-lock-fontify-now-mends-the-gaps ()
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(ert-with-test-buffer (:name "xxx")
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(jit-lock-tests--setup-buffer)
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(insert "aaabbbcccddd")
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(with-silent-modifications
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(put-text-property 1 4 'fontified t)
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(put-text-property 7 10 'fontified t))
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(jit-lock-fontify-now (point-min) (point-max))
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(should-not (text-property-not-all (point-min) (point-max) 'fontified t))))
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(ert-deftest jit-lock-fontify-now-does-not-refontify-unnecessarily ()
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(ert-with-test-buffer (:name "xxx")
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(setq font-lock-defaults
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(list '(((lambda () (error "Don't call me")))) t))
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(let (noninteractive)
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(font-lock-mode))
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(insert "aaa")
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(with-silent-modifications
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(put-text-property (point-min) (point-max) 'fontified t))
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(jit-lock-fontify-now (point-min) (point-max))))
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