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;;; button-tests.el --- tests for button.el -*- lexical-binding: t -*-
;; Copyright (C) 2019 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)
(ert-deftest button-at ()
"Test `button-at' behavior."
(with-temp-buffer
(should-not (button-at (point)))
(let ((button (insert-text-button "text button"))
(marker (button-at (1- (point)))))
(should (markerp marker))
(should (= (button-end button) (button-end marker) (point))))
(let ((button (insert-button "overlay button"))
(overlay (button-at (1- (point)))))
(should (overlayp overlay))
(should (eq button overlay)))
;; Buttons and widgets are incompatible (bug#34506).
(widget-create 'link "link widget")
(should-not (button-at (1- (point))))))
;;; button-tests.el ends here
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