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/**
* Copyright 2014 IBM Corp.
*
* 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 RedNode = require("../../../red/nodes/Node");
var comms = require('../../../red/comms');
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();
});
var p = n.close();
should.not.exist(p);
});
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();
},200);
});
var p = n.close();
should.exist(p);
p.then(function() {
testdone();
});
});
});
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);
});
});
describe('#send', function() {
it('emits a single message', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
var n2 = new RedNode({id:'n2',type:'abc'});
var message = {payload:"hello world"};
n2.on('input',function(msg) {
// msg equals message, but is a new copy
should.deepEqual(msg,message);
should.notStrictEqual(msg,message);
done();
});
n1.send(message);
});
it('emits multiple messages on a single output', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
var n2 = new RedNode({id:'n2',type:'abc'});
var messages = [
{payload:"hello world"},
{payload:"hello world again"}
];
var rcvdCount = 0;
n2.on('input',function(msg) {
should.deepEqual(msg,messages[rcvdCount]);
should.notStrictEqual(msg,messages[rcvdCount]);
rcvdCount += 1;
if (rcvdCount == 2) {
done();
}
});
n1.send([messages]);
});
it('emits messages to multiple outputs', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2'],['n3'],['n4','n5']]});
var n2 = new RedNode({id:'n2',type:'abc'});
var n3 = new RedNode({id:'n3',type:'abc'});
var n4 = new RedNode({id:'n4',type:'abc'});
var n5 = new RedNode({id:'n5',type:'abc'});
var messages = [
{payload:"hello world"},
null,
{payload:"hello world again"}
];
var rcvdCount = 0;
n2.on('input',function(msg) {
should.deepEqual(msg,messages[0]);
should.notStrictEqual(msg,messages[0]);
rcvdCount += 1;
if (rcvdCount == 3) {
done();
}
});
n3.on('input',function(msg) {
should.fail(null,null,"unexpected message");
});
n4.on('input',function(msg) {
should.deepEqual(msg,messages[2]);
should.notStrictEqual(msg,messages[2]);
rcvdCount += 1;
if (rcvdCount == 3) {
done();
}
});
n5.on('input',function(msg) {
should.deepEqual(msg,messages[2]);
should.notStrictEqual(msg,messages[2]);
rcvdCount += 1;
if (rcvdCount == 3) {
done();
}
});
n1.send(messages);
});
it('emits no messages', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
var n2 = new RedNode({id:'n2',type:'abc'});
n2.on('input',function(msg) {
should.fail(null,null,"unexpected message");
});
setTimeout(function() {
done();
}, 200);
n1.send();
});
it('emits messages ignoring non-existent nodes', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n9'],['n2']]});
var n2 = new RedNode({id:'n2',type:'abc'});
var messages = [
{payload:"hello world"},
{payload:"hello world again"}
];
n2.on('input',function(msg) {
should.deepEqual(msg,messages[1]);
should.notStrictEqual(msg,messages[1]);
done();
});
n1.send(messages);
});
it('emits messages without cloning req or res', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[['n2']]});
var n2 = new RedNode({id:'n2',type:'abc'});
var req = {};
var res = {};
var cloned = {};
var message = {payload: "foo", cloned: cloned, req: req, res: res};
n2.on('input',function(msg) {
should.deepEqual(msg, message);
msg.cloned.should.not.be.exactly(message.cloned);
msg.req.should.be.exactly(message.req);
msg.res.should.be.exactly(message.res);
done();
});
n1.send(message);
});
});
describe('#log', function() {
it('emits a log message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
n.on('log',function(obj) {
should.deepEqual({level:"log", id:n.id,
type:n.type, msg:"a log message"}, obj);
done();
});
n.log("a log message");
});
});
describe('#log', function() {
it('emits a log message with a name', function(done) {
var n = new RedNode({id:'123', type:'abc', name:"barney"});
n.on('log',function(obj) {
should.deepEqual({level:"log", id:n.id, name: "barney",
type:n.type, msg:"a log message"}, obj);
done();
});
n.log("a log message");
});
});
describe('#warn', function() {
it('emits a warning', function(done) {
var n = new RedNode({id:'123',type:'abc'});
n.on('log',function(obj) {
should.deepEqual({level:"warn", id:n.id,
type:n.type, msg:"a warning"}, obj);
done();
});
n.warn("a warning");
});
});
describe('#error', function() {
it('emits an error message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
n.on('log',function(obj) {
should.deepEqual({level:"error", id:n.id,
type:n.type, msg:"an error message"}, obj);
done();
});
n.error("an error message");
});
});
describe('#status', function() {
after(function() {
comms.publish.restore();
});
it('publishes status', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var status = {fill:"green",shape:"dot",text:"connected"};
sinon.stub(comms, 'publish', function(topic, message, retain) {
topic.should.equal('status/123');
message.should.equal(status);
retain.should.be.true;
done();
});
n.status(status);
});
});
});
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