;;; 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 . ;;; 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)))))) (ert-deftest button--help-echo () "Test `button--help-echo' behavior." (with-temp-buffer ;; Text property buttons. (let ((button (insert-text-button "text" 'help-echo "string"))) (should (equal (button--help-echo button) "string"))) (let ((button (insert-text-button "text" 'help-echo '(concat "form")))) (should (equal (button--help-echo button) "form"))) (let* ((owin (selected-window)) (obuf (current-buffer)) (opos (point)) (help (lambda (win obj pos) (should (eq win owin)) (should (eq obj obuf)) (should (= pos opos)) "function")) (button (insert-text-button "text" 'help-echo help))) (should (equal (button--help-echo button) "function"))) ;; Overlay buttons. (let ((button (insert-button "overlay" 'help-echo "string"))) (should (equal (button--help-echo button) "string"))) (let ((button (insert-button "overlay" 'help-echo '(concat "form")))) (should (equal (button--help-echo button) "form"))) (letrec ((owin (selected-window)) (obuf (current-buffer)) (opos (point)) (help (lambda (win obj pos) (should (eq win owin)) (should (overlayp obj)) (should (eq obj button)) (should (eq (overlay-buffer obj) obuf)) (should (= (overlay-start obj) opos)) (should (= pos opos)) "function")) (button (insert-button "overlay" 'help-echo help))) (should (equal (button--help-echo button) "function"))))) ;;; button-tests.el ends here