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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 functionNode = require("../../../../nodes/core/core/80-function.js");
var helper = require("../../helper.js");
describe('function node', function() {
before(function(done) {
helper.startServer(done);
});
afterEach(function() {
helper.unload();
});
it('should be loaded', function(done) {
var flow = [{id:"n1", type:"function", name: "function" }];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
n1.should.have.property('name', 'function');
done();
});
});
it('should send returned message', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"]],func:"return msg;"},
{id:"n2", type:"helper"}];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
msg.should.have.property('topic', 'bar');
msg.should.have.property('payload', 'foo');
done();
});
n1.receive({payload:"foo",topic: "bar"});
});
});
it('should pass through _topic', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"]],func:"return msg;"},
{id:"n2", type:"helper"}];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
msg.should.have.property('topic', 'bar');
msg.should.have.property('payload', 'foo');
msg.should.have.property('_topic', 'baz');
done();
});
n1.receive({payload:"foo",topic: "bar", _topic: "baz"});
});
});
it('should send to multiple outputs', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"],["n3"]],
func:"return [{payload: '1'},{payload: '2'}];"},
{id:"n2", type:"helper"}, {id:"n3", type:"helper"} ];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var n3 = helper.getNode("n3");
var count = 0;
n2.on("input", function(msg) {
should(msg).have.property('payload', '1');
count++;
if (count == 2) {
done();
}
});
n3.on("input", function(msg) {
should(msg).have.property('payload', '2');
count++;
if (count == 2) {
done();
}
});
n1.receive({payload:"foo",topic: "bar"});
});
});
it('should send to multiple messages', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"]],
func:"return [[{payload: 1},{payload: 2}]];"},
{id:"n2", type:"helper"} ];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var count = 0;
n2.on("input", function(msg) {
count++;
should(msg).have.property('payload', count);
should(msg).have.property('_topic', 'baz');
if (count == 2) {
done();
}
});
n1.receive({payload:"foo", topic: "bar", _topic:"baz"});
});
});
it('should allow input to be discarded by returning null', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"]],func:"return null"},
{id:"n2", type:"helper"}];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
setTimeout(function() {
done();
}, 200);
n2.on("input", function(msg) {
should.fail(null,null,"unexpected message");
});
n1.receive({payload:"foo",topic: "bar"});
});
});
it('should handle and log script error', function(done) {
var flow = [{id:"n1",type:"function",wires:[["n2"]],func:"retunr"}];
helper.load(functionNode, flow, function() {
var n1 = helper.getNode("n1");
n1.on("log", function(msg) {
msg.should.have.property('level', 'error');
msg.should.have.property('id', 'n1');
msg.should.have.property('type', 'function');
msg.should.have.property('msg', 'ReferenceError: retunr is not defined');
done();
});
n1.receive({payload:"foo",topic: "bar"});
});
});
});
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