Add test script for link node (#1463)

* fixed unmatched HTML tags

* add test for link node & red.js fix for it

red/red.js

@@ -97,6 +97,7 @@ module.exports = {
     settings:runtime.settings,
     util: runtime.util,
     version: runtime.version,
+    events: runtime.events,
 
     comms: api.comms,
     library: api.library,

test/nodes/core/core/60-link_spec.js

@@ -0,0 +1,118 @@
+/**
+ * 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 should = require("should");
+var linkNode = require("../../../../nodes/core/core/60-link.js");
+var helper = require("../../helper.js");
+
+describe('link Node', function() {
+
+    before(function(done) {
+        helper.startServer(done);
+    });
+
+    afterEach(function() {
+        helper.unload();
+    });
+
+    it('should be loaded (link in)', function(done) {
+        var flow = [{id:"n1", type:"link in", name: "link-in" }];
+        helper.load(linkNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            n1.should.have.property('name', 'link-in');
+            done();
+        });
+    });
+
+    it('should be loaded (link out)', function(done) {
+        var flow = [{id:"n1", type:"link out", name: "link-out" }];
+        helper.load(linkNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            n1.should.have.property('name', 'link-out');
+            done();
+        });
+    });
+
+    it('should be linked', function(done) {
+        var flow = [{id:"n1", type:"link out", name: "link-out", links:["n2"]},
+                    {id:"n2", type:"link in", name: "link-in", wires:[["n3"]]},
+                    {id:"n3", type:"helper"}];
+        helper.load(linkNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n3 = helper.getNode("n3");
+            n3.on("input", function(msg) {
+                try {
+                    msg.should.have.property('payload', 'hello');
+                    done();
+                } catch(err) {
+                    done(err);
+                }
+            });
+            n1.receive({payload:"hello"});
+        });
+    });
+
+    it('should be linked to multiple nodes', function(done) {
+        var flow = [{id:"n1", type:"link out", name: "link-out", links:["n2", "n3"]},
+                    {id:"n2", type:"link in", name: "link-in0", wires:[["n4"]]},
+                    {id:"n3", type:"link in", name: "link-in1", wires:[["n4"]]},
+                    {id:"n4", type:"helper"} ];
+        helper.load(linkNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n4 = helper.getNode("n4");
+            var count = 0;
+            n4.on("input", function (msg) {
+                try {
+                    msg.should.have.property('payload', 'hello');
+                    count++;
+                    if(count == 2) {
+                        done();
+                    }
+                } catch(err) {
+                    done(err);
+                }
+            });
+            n1.receive({payload:"hello"});
+        });
+    });
+
+    it('should be linked from multiple nodes', function(done) {
+        var flow = [{id:"n1", type:"link out", name: "link-out0", links:["n3"]},
+                    {id:"n2", type:"link out", name: "link-out1", links:["n3"]},
+                    {id:"n3", type:"link in", name: "link-in", wires:[["n4"]]},
+                    {id:"n4", type:"helper"} ];
+        helper.load(linkNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n2 = helper.getNode("n2");
+            var n4 = helper.getNode("n4");
+            var count = 0;
+            n4.on("input", function(msg) {
+                try {
+                    msg.should.have.property('payload', 'hello');
+                    count++;
+                    if(count == 2) {
+                        done();
+                    }
+                } catch(err) {
+                    done(err);
+                }
+            });
+            n1.receive({payload:"hello"});
+            n2.receive({payload:"hello"});
+        });
+    });
+
+});