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node-red/test/node_spec.js

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2013-10-20 22:42:01 +02:00
var should = require("should");
var RedNodes = require("../red/nodes.js");
var RedNode = RedNodes.Node;
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.a.length(2);
});
});
describe('#close', function() {
it('emits close event when closed',function(done) {
var n = new RedNode({id:'123',type:'abc'});
n.on('close',done);
n.close();
});
});
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);
});
});
});