diff --git a/test/runner.html b/test/runner.html
index e1061780ae..4aea40f205 100644
--- a/test/runner.html
+++ b/test/runner.html
@@ -84,8 +84,9 @@
       'unit/disable-upgrade.html',
       'unit/shady-unscoped-style.html',
       'unit/html-tag.html',
-      'unit/legacy-data.html'
+      'unit/legacy-data.html',
       // 'unit/multi-style.html'
+      'unit/class-properties.html'
     ];
 
     function combinations(suites, flags) {
diff --git a/test/unit/class-properties.html b/test/unit/class-properties.html
new file mode 100644
index 0000000000..6d2bbf56a6
--- /dev/null
+++ b/test/unit/class-properties.html
@@ -0,0 +1,39 @@
+<!doctype html>
+<!--
+@license
+Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<html>
+<head>
+  <meta charset="utf-8">
+  <script src="../../node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js"></script>
+  <script src="wct-browser-config.js"></script>
+  <script src="../../node_modules/wct-browser-legacy/browser.js"></script>
+</head>
+<body>
+  <script type="module">
+    import {Polymer} from '../../polymer-legacy.js';
+    class Example {
+      ready() {}
+      foo() {}
+    }
+    Example.prototype.is = 'x-example';
+
+    suite('Polymer function w/Class', function() {
+      test('Polymer call works with a class', function() {
+        assert.doesNotThrow(() => Polymer(Example.prototype));
+      });
+      test('methods are copied from class input', function() {
+        const def = customElements.get('x-example');
+        assert(def.prototype.ready, 'ready should be defined');
+        assert(def.prototype.foo, 'foo should be defined');
+      });
+    });
+  </script>
+</body>
+</html>
\ No newline at end of file
