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node-red/test/red/nodes/Node_spec.js

546 lines
19 KiB
JavaScript

/**
* Copyright 2014, 2015 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 Log = require("../../../red/log");
var flows = require("../../../red/nodes/flows");
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();
});
});
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();
},200);
});
n.on('close',function(done) {
setTimeout(function() {
callbacksClosed++;
done();
},200);
});
n.on('close',function() {
callbacksClosed++;
});
var p = n.close();
should.exist(p);
p.then(function() {
callbacksClosed.should.eql(3);
testdone();
}).otherwise(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",function(err,msg) {});
var message = {payload:"hello world"};
n.on('input',function(msg) {
throw new Error("test error");
});
n.receive(message);
n.error.called.should.be.true;
n.error.firstCall.args[1].should.equal(message);
done();
});
});
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 flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2}[id];
});
var message = {payload:"hello world"};
n2.on('input',function(msg) {
// msg equals message, and is not a new copy
should.deepEqual(msg,message);
should.strictEqual(msg,message);
flowGet.restore();
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 flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2}[id];
});
var messages = [
{payload:"hello world"},
{payload:"hello world again"}
];
var rcvdCount = 0;
n2.on('input',function(msg) {
if (rcvdCount === 0) {
// first msg sent, don't clone
should.deepEqual(msg,messages[rcvdCount]);
should.strictEqual(msg,messages[rcvdCount]);
rcvdCount += 1;
} else {
// second msg sent, clone
msg.payload.should.equal(messages[rcvdCount].payload);
should.notStrictEqual(msg,messages[rcvdCount]);
flowGet.restore();
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 flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2,'n3':n3,'n4':n4,'n5':n5}[id];
});
var messages = [
{payload:"hello world"},
null,
{payload:"hello world again"}
];
var rcvdCount = 0;
// first message sent, don't clone
// message uuids should match
n2.on('input',function(msg) {
should.deepEqual(msg,messages[0]);
should.strictEqual(msg,messages[0]);
rcvdCount += 1;
if (rcvdCount == 3) {
flowGet.restore();
done();
}
});
n3.on('input',function(msg) {
should.fail(null,null,"unexpected message");
});
// second message sent, clone
// message uuids wont match since we've cloned
n4.on('input',function(msg) {
msg.payload.should.equal(messages[2].payload);
should.notStrictEqual(msg,messages[2]);
rcvdCount += 1;
if (rcvdCount == 3) {
flowGet.restore();
done();
}
});
// third message sent, clone
// message uuids wont match since we've cloned
n5.on('input',function(msg) {
msg.payload.should.equal(messages[2].payload);
should.notStrictEqual(msg,messages[2]);
rcvdCount += 1;
if (rcvdCount == 3) {
flowGet.restore();
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'});
var flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2}[id];
});
n2.on('input',function(msg) {
should.fail(null,null,"unexpected message");
});
setTimeout(function() {
flowGet.restore();
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 flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2}[id];
});
var messages = [
{payload:"hello world"},
{payload:"hello world again"}
];
// only one message sent, so no copy needed
n2.on('input',function(msg) {
should.deepEqual(msg,messages[1]);
should.strictEqual(msg,messages[1]);
flowGet.restore();
done();
});
n1.send(messages);
});
it('emits messages without cloning req or res', function(done) {
var n1 = new RedNode({id:'n1',type:'abc',wires:[[['n2'],['n3']]]});
var n2 = new RedNode({id:'n2',type:'abc'});
var n3 = new RedNode({id:'n3',type:'abc'});
var flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':n1,'n2':n2,'n3':n3}[id];
});
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) {
flowGet.restore();
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) {
flowGet.restore();
done();
}
});
n1.send(message);
});
it("logs the uuid for all messages sent", function(done) {
var flowGet = sinon.stub(flows,"get",function(id) {
return {'n1':sender,'n2':receiver1,'n3':receiver2}[id];
});
var logHandler = {
messagesSent: 0,
emit: function(event, msg) {
if (msg.event == "node.abc.send" && msg.level == Log.METRIC) {
this.messagesSent++;
(typeof msg.msgid).should.not.be.equal("undefined");
flowGet.restore();
done();
}
}
};
Log.addHandler(logHandler);
var sender = new RedNode({id:'n1',type:'abc', wires:[['n2', 'n3']]});
var receiver1 = new RedNode({id:'n2',type:'abc'});
var receiver2 = new RedNode({id:'n3',type:'abc'});
sender.send({"some": "message"});
})
});
describe('#log', function() {
it('produces a log message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
sinon.stub(Log, 'log', function(msg) {
loginfo = msg;
});
n.log("a log message");
should.deepEqual({level:Log.INFO, id:n.id,
type:n.type, msg:"a log message", }, loginfo);
Log.log.restore();
done();
});
it('produces a log message with a name', function(done) {
var n = new RedNode({id:'123', type:'abc', name:"barney"});
var loginfo = {};
sinon.stub(Log, 'log', function(msg) {
loginfo = msg;
});
n.log("a log message");
should.deepEqual({level:Log.INFO, id:n.id, name: "barney",
type:n.type, msg:"a log message"}, loginfo);
Log.log.restore();
done();
});
});
describe('#warn', function() {
it('produces a warning message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
sinon.stub(Log, 'log', function(msg) {
loginfo = msg;
});
n.warn("a warning");
should.deepEqual({level:Log.WARN, id:n.id,
type:n.type, msg:"a warning"}, loginfo);
Log.log.restore();
done();
});
});
describe('#error', function() {
it('handles a null error message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
sinon.stub(Log, 'log', function(msg) {
loginfo = msg;
});
sinon.stub(flows,"handleError", function(node,message,msg) {
});
var message = {a:1};
n.error(null,message);
should.deepEqual({level:Log.ERROR, id:n.id, type:n.type, msg:""}, loginfo);
flows.handleError.called.should.be.true;
flows.handleError.args[0][0].should.eql(n);
flows.handleError.args[0][1].should.eql("");
flows.handleError.args[0][2].should.eql(message);
Log.log.restore();
flows.handleError.restore();
done();
});
it('produces an error message', function(done) {
var n = new RedNode({id:'123',type:'abc'});
var loginfo = {};
sinon.stub(Log, 'log', function(msg) {
loginfo = msg;
});
sinon.stub(flows,"handleError", function(node,message,msg) {
});
var message = {a:2};
n.error("This is an error",message);
should.deepEqual({level:Log.ERROR, id:n.id, type:n.type, msg:"This is an error"}, loginfo);
flows.handleError.called.should.be.true;
flows.handleError.args[0][0].should.eql(n);
flows.handleError.args[0][1].should.eql("This is an error");
flows.handleError.args[0][2].should.eql(message);
Log.log.restore();
flows.handleError.restore();
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', 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', 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', 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() {
after(function() {
comms.publish.restore();
});
it('publishes status', function(done) {
sinon.stub(flows,"handleStatus", function(node,message,msg) {});
var n = new RedNode({id:'123',type:'abc'});
var status = {fill:"green",shape:"dot",text:"connected"};
var topic;
var message;
var retain;
sinon.stub(comms, 'publish', function(_topic, _message, _retain) {
topic = _topic;
message = _message;
retain = _retain;
});
n.status(status);
topic.should.equal('status/123');
message.should.equal(status);
retain.should.be.true;
flows.handleStatus.called.should.be.true;
flows.handleStatus.args[0][0].should.eql(n);
flows.handleStatus.args[0][1].should.eql(status);
flows.handleStatus.restore();
done();
});
});
});