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diff --git a/test/lisp/emacs-lisp/checkdoc-tests.el b/test/lisp/emacs-lisp/checkdoc-tests.el
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+;;; checkdoc-tests.el --- unit tests for checkdoc.el  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2016  Free Software Foundation, Inc.
+
+;; Author: Google 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 <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Unit tests for lisp/emacs-lisp/checkdoc.el.
+
+;;; Code:
+
+(require 'checkdoc)
+
+(require 'elisp-mode)
+(require 'ert)
+
+(ert-deftest checkdoc-tests--bug-24998 ()
+  "Checks that Bug#24998 is fixed."
+  (with-temp-buffer
+    (emacs-lisp-mode)
+    (insert "(defun foo())")
+    (should-error (checkdoc-defun) :type 'user-error)))
+
+(ert-deftest checkdoc-tests--next-docstring ()
+  "Checks that the one-argument form of `defvar' works.
+See the comments in Bug#24998."
+  (with-temp-buffer
+    (emacs-lisp-mode)
+    (insert "(defvar foo)
+\(defvar foo bar \"baz\")
+\(require 'foo)")
+    (goto-char (point-min))
+    (should (checkdoc-next-docstring))
+    (should (looking-at-p "\"baz\")"))
+    (should-not (checkdoc-next-docstring))))
+
+;;; checkdoc-tests.el ends here