/** * 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 sinon = require('sinon'); var NR_TEST_UTILS = require("nr-test-utils"); var RedNode = NR_TEST_UTILS.require("@node-red/runtime/lib/nodes/Node"); var Log = NR_TEST_UTILS.require("@node-red/util").log; var hooks = NR_TEST_UTILS.require("@node-red/util/lib/hooks"); var flows = NR_TEST_UTILS.require("@node-red/runtime/lib/flows"); describe('Node', function() { describe('#constructor',function() { it('is called with an id and a type',function() { var n = new RedNode({id:'123',type:'abc'}); n.should.have.property('id','123'); n.should.have.property('type','abc'); n.should.not.have.property('name'); n.wires.should.be.empty(); }); it('is called with an id, a type and a name',function() { var n = new RedNode({id:'123',type:'abc',name:'barney'}); n.should.have.property('id','123'); n.should.have.property('type','abc'); n.should.have.property('name','barney'); n.wires.should.be.empty(); }); it('is called with an id, a type and some wires',function() { var n = new RedNode({id:'123',type:'abc',wires:['123','456']}); n.should.have.property('id','123'); n.should.have.property('type','abc'); n.should.not.have.property('name'); n.wires.should.have.length(2); }); }); describe('#close', function() { it('emits close event when closed',function(done) { var n = new RedNode({id:'123',type:'abc'}); n.on('close',function() { done(); }); n.close(); }); it('returns a promise when provided a callback with a done parameter',function(testdone) { var n = new RedNode({id:'123',type:'abc'}); n.on('close',function(done) { setTimeout(function() { done(); },50); }); var p = n.close(); should.exist(p); p.then(function() { testdone(); }); }); it('accepts a callback with "removed" and "done" parameters', function(testdone) { var n = new RedNode({id:'123',type:'abc'}); var receivedRemoved; n.on('close',function(removed,done) { receivedRemoved = removed; setTimeout(function() { done(); },50); }); var p = n.close(true); should.exist(p); (receivedRemoved).should.be.true(); p.then(function() { testdone(); }); }) it('allows multiple close handlers to be registered',function(testdone) { var n = new RedNode({id:'123',type:'abc'}); var callbacksClosed = 0; n.on('close',function(done) { setTimeout(function() { callbacksClosed++; done(); },50); }); n.on('close',function(done) { setTimeout(function() { callbacksClosed++; done(); },75); }); n.on('close',function() { callbacksClosed++; }); var p = n.close(); should.exist(p); p.then(function() { callbacksClosed.should.eql(3); testdone(); }).catch(function(e) { testdone(e); }); }); }); describe('#receive', function() { it('emits input event when called', function(done) { var n = new RedNode({id:'123',type:'abc'}); var message = {payload:"hello world"}; n.on('input',function(msg) { should.deepEqual(msg,message); done(); }); n.receive(message); }); it('writes metric info with undefined msg', function(done){ var n = new RedNode({id:'123',type:'abc'}); n.on('input',function(msg) { (typeof msg).should.not.be.equal("undefined"); (typeof msg._msgid).should.not.be.equal("undefined"); done(); }); n.receive(); }); it('writes metric info with null msg', function(done){ var n = new RedNode({id:'123',type:'abc'}); n.on('input',function(msg) { (typeof msg).should.not.be.equal("undefined"); (typeof msg._msgid).should.not.be.equal("undefined"); done(); }); n.receive(null); }); it('handles thrown errors', function(done) { var n = new RedNode({id:'123',type:'abc'}); sinon.stub(n,"error").callsFake(function(err,msg) {}); var message = {payload:"hello world"}; n.on('input',function(msg) { throw new Error("test error"); }); n.receive(message); setTimeout(function() { n.error.called.should.be.true(); n.error.firstCall.args[1].should.equal(message); done(); },50); }); it('calls parent flow handleComplete when callback provided', function(done) { var n = new RedNode({id:'123',type:'abc', _flow: { handleComplete: function(node,msg) { try { msg.should.deepEqual(message); done(); } catch(err) { done(err); } } }}); var message = {payload:"hello world"}; n.on('input',function(msg, nodeSend, nodeDone) { nodeDone(); }); n.receive(message); }); it('triggers onComplete hook when done callback provided', function(done) { var handleCompleteCalled = false; var hookCalled = false; var n = new RedNode({id:'123',type:'abc', _flow: { handleComplete: function(node,msg) { handleCompleteCalled = true; } }}); var hookError; hooks.add("onComplete",function(completeEvent) { hookCalled = true; try { handleCompleteCalled.should.be.false("onComplete should be called before handleComplete") should.not.exist(completeEvent.error); completeEvent.msg.should.deepEqual(message); completeEvent.node.id.should.eql("123"); completeEvent.node.node.should.equal(n); } catch(err) { hookError = err; } }) var message = {payload:"hello world"}; n.on('input',function(msg, nodeSend, nodeDone) { nodeDone(); }); n.receive(message); setTimeout(function() { if (hookError) { done(hookError); return } try { hookCalled.should.be.true("onComplete hook should be called"); handleCompleteCalled.should.be.true("handleComplete should be called"); done(); } catch(err) { done(err); } }) }); it('triggers onComplete hook when done callback provided - with error', function(done) { var handleCompleteCalled = false; var hookCalled = false; var errorReported = false; var n = new RedNode({id:'123',type:'abc', _flow: { handleComplete: function(node,msg) { handleCompleteCalled = true; } }}); var hookError; hooks.add("onComplete",function(completeEvent) { hookCalled = true; try { handleCompleteCalled.should.be.false("onComplete should be called before handleComplete") should.exist(completeEvent.error); completeEvent.error.toString().should.equal("Error: test error") completeEvent.msg.should.deepEqual(message); completeEvent.node.id.should.eql("123"); completeEvent.node.node.should.equal(n); } catch(err) { hookError = err; } }) var message = {payload:"hello world"}; n.on('input',function(msg, nodeSend, nodeDone) { nodeDone(new Error("test error")); }); n.error = function(err,msg) { errorReported = true; } n.receive(message); setTimeout(function() { if (hookError) { done(hookError); return } try { hookCalled.should.be.true("onComplete hook should be called"); handleCompleteCalled.should.be.false("handleComplete should not be called"); done(); } catch(err) { done(err); } }) }); it('logs error if callback provides error', function(done) { var n = new RedNode({id:'123',type:'abc'}); sinon.stub(n,"error").callsFake(function(err,msg) {}); var message = {payload:"hello world"}; n.on('input',function(msg, nodeSend, nodeDone) { nodeDone(new Error("test error")); setTimeout(function() { try { n.error.called.should.be.true(); n.error.firstCall.args[0].toString().should.equal("Error: test error"); n.error.firstCall.args[1].should.equal(message); done(); } catch(err) { done(err); } },50); }); n.receive(message); }); it("triggers hooks when receiving a message", function(done) { var hookErrors = []; var messageReceived = false; var hooksCalled = []; hooks.add("onReceive", function(receiveEvent) { hooksCalled.push("onReceive") try { messageReceived.should.be.false("Message should not have been received before onReceive") receiveEvent.msg.should.be.exactly(message); receiveEvent.destination.id.should.equal("123") receiveEvent.destination.node.should.equal(n) } catch(err) { hookErrors.push(err); } }) hooks.add("postReceive", function(receiveEvent) { hooksCalled.push("postReceive") try { messageReceived.should.be.true("Message should have been received before postReceive") receiveEvent.msg.should.be.exactly(message); receiveEvent.destination.id.should.equal("123") receiveEvent.destination.node.should.equal(n) } catch(err) { hookErrors.push(err); } }) var n = new RedNode({id:'123',type:'abc'}); var message = {payload:"hello world"}; n.on('input',function(msg) { messageReceived = true; try { should.strictEqual(this,n); hooksCalled.should.eql(["onReceive"]) should.deepEqual(msg,message); } catch(err) { hookErrors.push(err) } }); n.receive(message); setTimeout(function() { hooks.clear(); if (hookErrors.length > 0) { done(hookErrors[0]) } else { done(); } },10); }); describe("errors thrown by hooks are reported", function() { before(function() { hooks.add("onReceive",function(recEvent) { if (recEvent.msg.payload === "trigger-onReceive") { throw new Error("onReceive Error") } }) hooks.add("postReceive",function(recEvent) { if (recEvent.msg.payload === "trigger-postReceive") { throw new Error("postReceive Error") } }) }) after(function() { hooks.clear(); }) function testHook(hook, msgExpected, done) { var messageReceived = false; var errorReceived; var n = new RedNode({id:'123',type:'abc'}); var message = {payload:"trigger-"+hook}; n.on('input',function(msg) { messageReceived = true; }); n.error = function (err) { errorReceived = err; } n.receive(message); setTimeout(function() { try { messageReceived.should.equal(msgExpected,`Hook ${hook} messageReceived expected ${msgExpected} actual ${messageReceived}`); should.exist(errorReceived); errorReceived.toString().should.containEql(hook) done() } catch(err) { done(err); } },10); } it("onReceive", function(done) { testHook("onReceive", false, done)}) it("postReceive", function(done) { testHook("postReceive", true, done)}) }) }); describe("hooks can halt receive", function() { before(function() { hooks.add("onReceive",function(recEvent) { if (recEvent.msg.payload === "trigger-onReceive") { return false; } }) }) after(function() { hooks.clear(); }) function testHook(hook, msgExpected, done) { var messageReceived = false; var errorReceived; var n = new RedNode({id:'123',type:'abc'}); var message = {payload:"trigger-"+hook}; n.on('input',function(msg) { messageReceived = true; }); n.error = function (err) { errorReceived = err; } n.receive(message); setTimeout(function() { try { messageReceived.should.equal(msgExpected,`Hook ${hook} messageReceived expected ${msgExpected} actual ${messageReceived}`); should.not.exist(errorReceived); done() } catch(err) { done(err); } },10); } it("onReceive", function(done) { testHook("onReceive", false, done)}) }) describe('#send', function() { it('emits a single message', function(done) { var flow = { send: (sendEvents) => { try { sendEvents.should.have.length(1); sendEvents[0].msg.should.equal(message); sendEvents[0].destination.should.eql({id:"n2", node: undefined}); sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0}) done(); } catch(err) { done(err); } }, }; var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]}); var message = {payload:"hello world"}; n1.send(message); }); it('emits a message with callback provided send', function(done) { var flow = { handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)}, handleComplete: (node,msg) => {}, send: (sendEvents) => { try { sendEvents.should.have.length(1); sendEvents[0].msg.should.equal(message); sendEvents[0].destination.should.eql({id:"n2", node: undefined}); sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0}); sendEvents[0].cloneMessage.should.be.false(); done(); } catch(err) { done(err); } }, }; var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]}); var message = {payload:"hello world"}; n1.on('input',function(msg,nodeSend,nodeDone) { nodeSend(msg); nodeDone(); }); n1.receive(message); }); it('emits multiple messages on a single output', function(done) { var flow = { handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)}, send: (sendEvents) => { try { sendEvents.should.have.length(2); sendEvents[0].msg.should.equal(messages[0]); sendEvents[0].destination.should.eql({id:"n2", node: undefined}); sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0}); sendEvents[0].cloneMessage.should.be.false(); sendEvents[1].msg.should.equal(messages[1]); sendEvents[1].destination.should.eql({id:"n2", node: undefined}); sendEvents[1].source.should.eql({id:"n1", node: n1, port: 0}); sendEvents[1].cloneMessage.should.be.true(); done(); } catch(err) { done(err); } }, }; var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]}); var messages = [ {payload:"hello world"}, {payload:"hello world again"} ]; n1.send([messages]); }); it('emits messages to multiple outputs', function(done) { var flow = { handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)}, send: (sendEvents) => { try { sendEvents.should.have.length(3); sendEvents[0].msg.should.equal(messages[0]); sendEvents[0].destination.should.eql({id:"n2", node: undefined}); sendEvents[0].source.should.eql({id:"n1", node: n1, port: 0}); sendEvents[0].cloneMessage.should.be.false(); should.exist(sendEvents[0].msg._msgid); sendEvents[1].msg.should.equal(messages[2]); sendEvents[1].destination.should.eql({id:"n4", node: undefined}); sendEvents[1].source.should.eql({id:"n1", node: n1, port: 2}) sendEvents[1].cloneMessage.should.be.true(); should.exist(sendEvents[1].msg._msgid); sendEvents[2].msg.should.equal(messages[2]); sendEvents[2].destination.should.eql({id:"n5", node: undefined}); sendEvents[2].source.should.eql({id:"n1", node: n1, port: 2}) sendEvents[2].cloneMessage.should.be.true(); should.exist(sendEvents[2].msg._msgid); sendEvents[0].msg._msgid.should.eql(sendEvents[1].msg._msgid) sendEvents[1].msg._msgid.should.eql(sendEvents[2].msg._msgid) done(); } catch(err) { done(err); } } }; var n1 = new RedNode({_flow:flow, id:'n1',type:'abc',wires:[['n2'],['n3'],['n4','n5']]}); var n2 = new RedNode({_flow:flow, id:'n2',type:'abc'}); var n3 = new RedNode({_flow:flow, id:'n3',type:'abc'}); var n4 = new RedNode({_flow:flow, id:'n4',type:'abc'}); var n5 = new RedNode({_flow:flow, id:'n5',type:'abc'}); var messages = [ {payload:"hello world"}, null, {payload:"hello world again"} ]; var rcvdCount = 0; n1.send(messages); }); it('emits no messages', function(done) { var flow = { handleError: (node,logMessage,msg,reportingNode) => {done(logMessage)}, getNode: (id) => { return {'n1':n1,'n2':n2}[id]}, }; var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[['n2']]}); var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'}); n2.on('input',function(msg) { should.fail(null,null,"unexpected message"); }); setTimeout(function() { done(); }, 200); n1.send(); }); // it('emits messages without cloning req or res', function(done) { // var flow = { // getNode: (id) => { return {'n1':n1,'n2':n2,'n3':n3}[id]}, // send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })} // }; // var n1 = new RedNode({_flow:flow,id:'n1',type:'abc',wires:[[['n2'],['n3']]]}); // var n2 = new RedNode({_flow:flow,id:'n2',type:'abc'}); // var n3 = new RedNode({_flow:flow,id:'n3',type:'abc'}); // // var req = {}; // var res = {}; // var cloned = {}; // var message = {payload: "foo", cloned: cloned, req: req, res: res}; // // var rcvdCount = 0; // // // first message to be sent, so should not be cloned // n2.on('input',function(msg) { // should.deepEqual(msg, message); // msg.cloned.should.be.exactly(message.cloned); // msg.req.should.be.exactly(message.req); // msg.res.should.be.exactly(message.res); // rcvdCount += 1; // if (rcvdCount == 2) { // done(); // } // }); // // // second message to be sent, so should be cloned // // message uuids wont match since we've cloned // n3.on('input',function(msg) { // msg.payload.should.equal(message.payload); // msg.cloned.should.not.be.exactly(message.cloned); // msg.req.should.be.exactly(message.req); // msg.res.should.be.exactly(message.res); // rcvdCount += 1; // if (rcvdCount == 2) { // done(); // } // }); // // n1.send(message); // }); // it("logs the uuid for all messages sent", function(done) { // var logHandler = { // msgIds:[], // messagesSent: 0, // emit: function(event, msg) { // if (msg.event == "node.abc.send" && msg.level == Log.METRIC) { // this.messagesSent++; // this.msgIds.push(msg.msgid); // (typeof msg.msgid).should.not.be.equal("undefined"); // } // } // }; // // Log.addHandler(logHandler); // var flow = { // getNode: (id) => { return {'n1':sender,'n2':receiver1,'n3':receiver2}[id]}, // send: (node,dst,msg) => { setImmediate(function() { flow.getNode(dst).receive(msg) })} // }; // // var sender = new RedNode({_flow:flow,id:'n1',type:'abc', wires:[['n2', 'n3']]}); // var receiver1 = new RedNode({_flow:flow,id:'n2',type:'abc'}); // var receiver2 = new RedNode({_flow:flow,id:'n3',type:'abc'}); // sender.send({"some": "message"}); // setTimeout(function() { // try { // logHandler.messagesSent.should.equal(1); // should.exist(logHandler.msgIds[0]) // Log.removeHandler(logHandler); // done(); // } catch(err) { // Log.removeHandler(logHandler); // done(err); // } // },50) // }) }); describe('#log', function() { it('produces a log message', function(done) { var n = new RedNode({id:'123',type:'abc',z:'789', _flow: {log:function(msg) { loginfo = msg;}}}); var loginfo = {}; n.log("a log message"); should.deepEqual({level:Log.INFO, id:n.id, type:n.type, msg:"a log message",z:'789'}, loginfo); done(); }); it('produces a log message with a name', function(done) { var n = new RedNode({id:'123', type:'abc', name:"barney", z:'789', _flow: {log:function(msg) { loginfo = msg;}}}); var loginfo = {}; n.log("a log message"); should.deepEqual({level:Log.INFO, id:n.id, name: "barney", type:n.type, msg:"a log message",z:'789'}, loginfo); done(); }); }); describe('#warn', function() { it('produces a warning message', function(done) { var n = new RedNode({id:'123',type:'abc',z:'789', _flow: {log:function(msg) { loginfo = msg;}}}); var loginfo = {}; n.warn("a warning"); should.deepEqual({level:Log.WARN, id:n.id, type:n.type, msg:"a warning",z:'789'}, loginfo); done(); }); }); describe('#error', function() { it('handles a null error message', function(done) { var flow = { handleError: sinon.stub(), log:sinon.stub() } var n = new RedNode({_flow:flow, id:'123',type:'abc',z:'789'}); var message = {a:1}; n.error(null,message); flow.handleError.called.should.be.true(); flow.handleError.args[0][0].should.eql(n); flow.handleError.args[0][1].should.eql(""); flow.handleError.args[0][2].should.eql(message); done(); }); it('produces an error message', function(done) { var flow = { handleError: sinon.stub(), log:sinon.stub() } var n = new RedNode({_flow:flow, id:'123',type:'abc',z:'789'}); var message = {a:2}; n.error("This is an error",message); flow.handleError.called.should.be.true(); flow.handleError.args[0][0].should.eql(n); flow.handleError.args[0][1].should.eql("This is an error"); flow.handleError.args[0][2].should.eql(message); done(); }); }); describe('#metric', function() { it('produces a metric message', function(done) { var n = new RedNode({id:'123',type:'abc'}); var loginfo = {}; sinon.stub(Log, 'log').callsFake(function(msg) { loginfo = msg; }); var msg = {payload:"foo", _msgid:"987654321"}; n.metric("test.metric",msg,"15mb"); should.deepEqual({value:"15mb", level:Log.METRIC, nodeid:n.id, event:"node.abc.test.metric",msgid:"987654321"}, loginfo); Log.log.restore(); done(); }); }); describe('#metric', function() { it('returns metric value if eventname undefined', function(done) { var n = new RedNode({id:'123',type:'abc'}); var loginfo = {}; sinon.stub(Log, 'log').callsFake(function(msg) { loginfo = msg; }); var msg = {payload:"foo", _msgid:"987654321"}; var m = n.metric(undefined,msg,"15mb"); m.should.be.a.Boolean(); Log.log.restore(); done(); }); it('returns not defined if eventname defined', function(done) { var n = new RedNode({id:'123',type:'abc'}); var loginfo = {}; sinon.stub(Log, 'log').callsFake(function(msg) { loginfo = msg; }); var msg = {payload:"foo", _msgid:"987654321"}; var m = n.metric("info",msg,"15mb"); should(m).be.undefined; Log.log.restore(); done(); }); }); describe('#status', function() { it('publishes status', function(done) { var flow = { handleStatus: sinon.stub() } var n = new RedNode({_flow:flow,id:'123',type:'abc'}); var status = {fill:"green",shape:"dot",text:"connected"}; n.status(status); flow.handleStatus.called.should.be.true(); flow.handleStatus.args[0][0].should.eql(n); flow.handleStatus.args[0][1].should.eql(status); done(); }); it('publishes status for plain string', function(done) { var flow = { handleStatus: sinon.stub() } var n = new RedNode({_flow:flow,id:'123',type:'abc'}); n.status("text status"); flow.handleStatus.called.should.be.true(); flow.handleStatus.args[0][0].should.eql(n); flow.handleStatus.args[0][1].should.eql({text:"text status"}); done(); }); it('publishes status for plain boolean', function(done) { var flow = { handleStatus: sinon.stub() } var n = new RedNode({_flow:flow,id:'123',type:'abc'}); n.status(false); flow.handleStatus.called.should.be.true(); flow.handleStatus.args[0][0].should.eql(n); flow.handleStatus.args[0][1].should.eql({text:"false"}); done(); }); it('publishes status for plain number', function(done) { var flow = { handleStatus: sinon.stub() } var n = new RedNode({_flow:flow,id:'123',type:'abc'}); n.status(123); flow.handleStatus.called.should.be.true(); flow.handleStatus.args[0][0].should.eql(n); flow.handleStatus.args[0][1].should.eql({text:"123"}); done(); }); }); });