mirror of
https://github.com/node-red/node-red.git
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321 lines
10 KiB
JavaScript
321 lines
10 KiB
JavaScript
/**
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* Copyright 2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var should = require("should");
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var sinon = require('sinon');
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var RedNode = require("../../../red/nodes/Node");
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var comms = require('../../../red/comms');
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describe('Node', function() {
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describe('#constructor',function() {
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it('is called with an id and a type',function() {
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var n = new RedNode({id:'123',type:'abc'});
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n.should.have.property('id','123');
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n.should.have.property('type','abc');
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n.should.not.have.property('name');
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n.wires.should.be.empty;
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});
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it('is called with an id, a type and a name',function() {
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var n = new RedNode({id:'123',type:'abc',name:'barney'});
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n.should.have.property('id','123');
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n.should.have.property('type','abc');
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n.should.have.property('name','barney');
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n.wires.should.be.empty;
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});
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it('is called with an id, a type and some wires',function() {
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var n = new RedNode({id:'123',type:'abc',wires:['123','456']});
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n.should.have.property('id','123');
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n.should.have.property('type','abc');
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n.should.not.have.property('name');
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n.wires.should.have.length(2);
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});
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});
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describe('#close', function() {
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it('emits close event when closed',function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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n.on('close',function() {
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done();
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});
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var p = n.close();
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should.not.exist(p);
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});
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it('returns a promise when provided a callback with a done parameter',function(testdone) {
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var n = new RedNode({id:'123',type:'abc'});
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n.on('close',function(done) {
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setTimeout(function() {
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done();
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},200);
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});
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var p = n.close();
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should.exist(p);
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p.then(function() {
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testdone();
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});
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});
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});
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describe('#receive', function() {
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it('emits input event when called', function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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var message = {payload:"hello world"};
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n.on('input',function(msg) {
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should.deepEqual(msg,message);
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done();
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});
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n.receive(message);
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});
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});
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describe('#send', function() {
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it('emits a single message', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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var message = {payload:"hello world"};
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n2.on('input',function(msg) {
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// msg equals message, and is not a new copy
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should.deepEqual(msg,message);
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should.strictEqual(msg,message);
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done();
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});
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n1.send(message);
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});
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it('emits multiple messages on a single output', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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var messages = [
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{payload:"hello world"},
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{payload:"hello world again"}
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];
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var rcvdCount = 0;
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n2.on('input',function(msg) {
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should.deepEqual(msg,messages[rcvdCount]);
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if (rcvdCount === 0) {
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// first msg sent, don't clone
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should.strictEqual(msg,messages[rcvdCount]);
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} else {
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// second msg sent, clone
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should.notStrictEqual(msg,messages[rcvdCount]);
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}
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rcvdCount += 1;
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if (rcvdCount === 2) {
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done();
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}
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});
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n1.send([messages]);
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});
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it('emits messages to multiple outputs', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2'],['n3'],['n4','n5']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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var n3 = new RedNode({id:'n3',type:'abc'});
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var n4 = new RedNode({id:'n4',type:'abc'});
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var n5 = new RedNode({id:'n5',type:'abc'});
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var messages = [
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{payload:"hello world"},
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null,
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{payload:"hello world again"}
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];
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var rcvdCount = 0;
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// first message sent, don't clone
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n2.on('input',function(msg) {
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should.deepEqual(msg,messages[0]);
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should.strictEqual(msg,messages[0]);
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rcvdCount += 1;
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if (rcvdCount == 3) {
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done();
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}
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});
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n3.on('input',function(msg) {
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should.fail(null,null,"unexpected message");
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});
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// second message sent, clone
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n4.on('input',function(msg) {
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should.deepEqual(msg,messages[2]);
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should.notStrictEqual(msg,messages[2]);
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rcvdCount += 1;
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if (rcvdCount == 3) {
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done();
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}
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});
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// third message sent, clone
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n5.on('input',function(msg) {
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should.deepEqual(msg,messages[2]);
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should.notStrictEqual(msg,messages[2]);
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rcvdCount += 1;
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if (rcvdCount == 3) {
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done();
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}
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});
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n1.send(messages);
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});
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it('emits no messages', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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n2.on('input',function(msg) {
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should.fail(null,null,"unexpected message");
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});
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setTimeout(function() {
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done();
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}, 200);
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n1.send();
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});
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it('emits messages ignoring non-existent nodes', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n9'],['n2']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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var messages = [
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{payload:"hello world"},
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{payload:"hello world again"}
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];
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// only one message sent, so no copy needed
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n2.on('input',function(msg) {
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should.deepEqual(msg,messages[1]);
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should.strictEqual(msg,messages[1]);
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done();
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});
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n1.send(messages);
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});
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it('emits messages without cloning req or res', function(done) {
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var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2'],['n3']]});
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var n2 = new RedNode({id:'n2',type:'abc'});
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var n3 = new RedNode({id:'n3',type:'abc'});
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var req = {};
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var res = {};
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var cloned = {};
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var message = {payload: "foo", cloned: cloned, req: req, res: res};
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// first message to be sent, so should not be cloned
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n2.on('input',function(msg) {
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should.deepEqual(msg, message);
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msg.cloned.should.be.exactly(message.cloned);
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msg.req.should.be.exactly(message.req);
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msg.res.should.be.exactly(message.res);
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done();
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});
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// second message to be sent, so should be cloned
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n3.on('input',function(msg) {
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should.deepEqual(msg, message);
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msg.cloned.should.not.be.exactly(message.cloned);
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msg.req.should.be.exactly(message.req);
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msg.res.should.be.exactly(message.res);
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done();
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});
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n1.send(message);
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});
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});
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describe('#log', function() {
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it('emits a log message', function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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n.on('log',function(obj) {
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should.deepEqual({level:"log", id:n.id,
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type:n.type, msg:"a log message"}, obj);
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done();
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});
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n.log("a log message");
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});
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});
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describe('#log', function() {
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it('emits a log message with a name', function(done) {
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var n = new RedNode({id:'123', type:'abc', name:"barney"});
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n.on('log',function(obj) {
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should.deepEqual({level:"log", id:n.id, name: "barney",
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type:n.type, msg:"a log message"}, obj);
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done();
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});
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n.log("a log message");
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});
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});
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describe('#warn', function() {
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it('emits a warning', function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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n.on('log',function(obj) {
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should.deepEqual({level:"warn", id:n.id,
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type:n.type, msg:"a warning"}, obj);
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done();
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});
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n.warn("a warning");
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});
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});
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describe('#error', function() {
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it('emits an error message', function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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n.on('log',function(obj) {
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should.deepEqual({level:"error", id:n.id,
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type:n.type, msg:"an error message"}, obj);
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done();
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});
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n.error("an error message");
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});
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});
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describe('#status', function() {
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after(function() {
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comms.publish.restore();
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});
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it('publishes status', function(done) {
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var n = new RedNode({id:'123',type:'abc'});
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var status = {fill:"green",shape:"dot",text:"connected"};
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sinon.stub(comms, 'publish', function(topic, message, retain) {
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topic.should.equal('status/123');
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message.should.equal(status);
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retain.should.be.true;
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done();
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});
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n.status(status);
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});
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});
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});
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