Add UI test case for error handling

test/editor/specs/scenario/cookbook_errorhandling_uispec.js

@@ -0,0 +1,74 @@
+/**
+ * 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 when = require('when');
+var should = require('should');
+var fs = require('fs-extra');
+
+var helper = require('../../editor_helper');
+var debugTab = require('../../pageobjects/editor/debugTab_page');
+var workspace = require('../../pageobjects/editor/workspace_page');
+var specUtil = require('../../pageobjects/util/spec_util_page');
+
+var httpNodeRoot = '/api';
+
+// https://cookbook.nodered.org/
+describe('cookbook', function () {
+    beforeEach(function () {
+        workspace.init();
+    });
+
+    before(function () {
+        helper.startServer();
+    });
+
+    after(function () {
+        helper.stopServer();
+    });
+
+    describe('messages', function () {
+        it('trigger a flow when a node throws an error', function () {
+            var injectNode = workspace.addNode('inject');
+            var functionNode = workspace.addNode('function');
+            var catchNode = workspace.addNode('catch', 0 , 80);
+            var debugNode = workspace.addNode('debug');
+
+            functionNode.edit();
+            functionNode.setFunction('node.error("an example error", msg);');
+            functionNode.clickOk();
+
+            catchNode.edit();
+            catchNode.setScope(functionNode);
+            catchNode.clickOk();
+
+            debugNode.edit();
+            debugNode.setOutput('error');
+            debugNode.clickOk();
+
+            injectNode.connect(functionNode);
+            catchNode.connect(debugNode);
+
+            workspace.deploy();
+
+            debugTab.open();
+            injectNode.clickLeftButton();
+            debugTab.getMessage().should.eql(['"an example error"', 'function']);
+        });
+
+        // skip this case since the flow outputs random results.
+        it.skip('automatically retry an action after an error');
+    });
+});