Add UI test cases for messages on cookbook (#1562)

test/editor/pageobjects/util/util_page.js

@@ -0,0 +1,45 @@
+/**
+ * Copyright JS Foundation and other contributors, http://js.foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+function init() {
+    browser.addCommand("clickWithWait", function(selector) {
+        browser.waitForVisible(selector);
+        // Wait at most 10 seconds.
+        for (var i = 0; i < 50; i++) {
+            try {
+                var ret = browser.click(selector);
+                return ret;
+            } catch (err) {
+                if (err.message.indexOf('is not clickable') !== -1) {
+                    browser.pause(200);
+                } else {
+                    throw err;
+                }
+            }
+        }
+    }, false);
+
+    browser.addCommand("getTextWithWait", function(selector) {
+        browser.waitForExist(selector);
+        browser.waitForValue(selector);
+        var ret = browser.getText(selector);
+        return ret;
+    }, false);
+}
+
+ module.exports = {
+     init: init,
+ };