Added base template for config ui.

appengine/config_service/ui/bower_components/test-fixture/test-fixture-mocha.js

Index: appengine/config_service/ui/bower_components/test-fixture/test-fixture-mocha.js
diff --git a/appengine/config_service/ui/bower_components/test-fixture/test-fixture-mocha.js b/appengine/config_service/ui/bower_components/test-fixture/test-fixture-mocha.js
new file mode 100644
index 0000000000000000000000000000000000000000..bef3b76f1452d14db5e9855647593df118222c91
--- /dev/null
+++ b/appengine/config_service/ui/bower_components/test-fixture/test-fixture-mocha.js
@@ -0,0 +1,40 @@
+/**
+ * @license
+ * Copyright (c) 2015 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
+ */
+
+(function (Mocha) {
+  function extendInterfaceWithFixture (interfaceName) {
+    var originalInterface = Mocha.interfaces[interfaceName];
+    var teardownProperty = interfaceName === 'bdd' ? 'afterEach' : 'teardown';
+
+    Mocha.interfaces[interfaceName] = function (suite) {
+      originalInterface.apply(this, arguments);
+
+      suite.on('pre-require', function (context, file, mocha) {
+        if (!(context[teardownProperty])) {
+          return;
+        }
+
+        context.fixture = function (fixtureId, model) {
+          context[teardownProperty](function () {
+            document
+              .getElementById(fixtureId)
+              .restore();
+          });
+
+          return document
+            .getElementById(fixtureId)
+            .create(model);
+        };
+      });
+    };
+  }
+
+  Object.keys(Mocha.interfaces).forEach(extendInterfaceWithFixture);
+})(this.Mocha);