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diff --git a/test/lisp/textmodes/mhtml-mode-tests.el b/test/lisp/textmodes/mhtml-mode-tests.el
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+;;; mhtml-mode-tests.el --- Tests for mhtml-mode
+
+;; Copyright (C) 2017 Free Software Foundation, Inc.
+
+;; Keywords: tests
+
+;; 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:
+
+;;; Code:
+
+(require 'mhtml-mode)
+(require 'ert)
+
+(defun mhtml-test-syntax (before after what)
+  (with-temp-buffer
+    (mhtml-mode)
+    (insert before)
+    (save-excursion
+      (insert after))
+    (font-lock-ensure)
+    (should (eq (syntax-ppss-context (syntax-ppss)) what))))
+
+(ert-deftest mthml-comment-js ()
+  (mhtml-test-syntax "<html><script>\n/* "
+                     " some text */<script></html>"
+                     'comment))
+
+(ert-deftest mthml-string-js ()
+  (mhtml-test-syntax "<html><script>\n\" "
+                     " some text \"<script></html>"
+                     'string))
+
+(ert-deftest mthml-comment-css ()
+  (mhtml-test-syntax "<html><style>\n/* "
+                      " some text */<style></html>"
+                      'comment))
+
+(ert-deftest mthml-string-css ()
+  (mhtml-test-syntax "<html><style>\n\" "
+                      " some text \"<style></html>"
+                      'string))
+
+;;; mhtml-mode-tests.el ends here