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diff --git a/test/lisp/wid-edit-tests.el b/test/lisp/wid-edit-tests.el
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+;;; wid-edit-tests.el --- tests for wid-edit.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)
+(require 'wid-edit)
+
+(ert-deftest widget-at ()
+  "Test `widget-at' behavior."
+  (with-temp-buffer
+    (should-not (widget-at))
+    (let ((marco (widget-create 'link "link widget"))
+          (polo  (widget-at (1- (point)))))
+      (should (widgetp polo))
+      (should (eq marco polo)))
+    ;; Buttons and widgets are incompatible (bug#34506).
+    (insert-text-button "text button")
+    (should-not (widget-at (1- (point))))
+    (insert-button "overlay button")
+    (should-not (widget-at (1- (point))))))
+
+;;; wid-edit-tests.el ends here