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

test/editor/pageobjects/workspace/palette_page.js

@@ -0,0 +1,33 @@
+/**
+ * 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.
+ **/
+
+var idMap = {
+    // input
+    "inject": "#palette_node_inject",
+    // output
+    "debug": "#palette_node_debug",
+    // function
+    "change": "#palette_node_change",
+    "range": "#palette_node_range",
+};
+
+function getId(type) {
+    return idMap[type];
+}
+
+module.exports = {
+    getId: getId,
+};