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node-red-nodes/test/function/rbe/rbe_spec.js

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/**
* Copyright 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 helper = require('../../../test/helper.js');
var testNode = require('../../../function/rbe/rbe.js');
describe('rbe node', function() {
"use strict";
beforeEach(function(done) {
helper.startServer(done);
});
afterEach(function(done) {
helper.unload().then(function() {
helper.stopServer(done);
});
});
it("should be loaded with correct defaults", function(done) {
var flow = [{"id":"n1", "type":"rbe", "name":"rbe1", "wires":[[]]}];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
n1.should.have.property("name", "rbe1");
n1.should.have.property("func", "rbe");
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n1.should.have.property("gap", "0");
done();
});
});
it('should only send output if payload changes', function(done) {
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var flow = [{"id":"n1", "type":"rbe", func:"rbe", gap:"0", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
if (c === 0) {
msg.should.have.a.property("payload", "a");
c+=1;
}
else {
msg.should.have.a.property("payload", "b");
done();
}
});
n1.emit("input", {payload:"a"});
n1.emit("input", {payload:"a"});
n1.emit("input", {payload:"a"});
n1.emit("input", {payload:"a"});
n1.emit("input", {payload:"a"});
n1.emit("input", {payload:"b"});
n1.emit("input", {payload:"b"});
});
});
it('should only send output if more than x away from original value', function(done) {
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var flow = [{"id":"n1", "type":"rbe", func:"gap", gap:"10", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
if (c === 0) {
msg.should.have.a.property("payload", 0);
}
else if (c === 1) {
msg.should.have.a.property("payload", 20);
}
else {
msg.should.have.a.property("payload", "5 deg");
done();
}
c += 1;
});
n1.emit("input", {payload:0});
n1.emit("input", {payload:2});
n1.emit("input", {payload:4});
n1.emit("input", {payload:"6 deg"});
n1.emit("input", {payload:8});
n1.emit("input", {payload:20});
n1.emit("input", {payload:15});
n1.emit("input", {payload:"5 deg"});
});
});
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it('should only send output if more than x% away from original value', function(done) {
var flow = [{"id":"n1", "type":"rbe", func:"gap", gap:"10%", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
if (c === 0) {
msg.should.have.a.property("payload", 100);
}
else if (c === 1) {
msg.should.have.a.property("payload", 120);
}
else {
msg.should.have.a.property("payload", 132);
done();
}
c += 1;
});
n1.emit("input", {payload:100});
n1.emit("input", {payload:95});
n1.emit("input", {payload:105});
n1.emit("input", {payload:120});
n1.emit("input", {payload:130});
n1.emit("input", {payload:132});
});
});
it('should warn if no number found in gap mode', function(done) {
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var flow = [{"id":"n1", "type":"rbe", func:"gap", gap:"10", wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(testNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
c += 1;
});
setTimeout( function() {
c.should.equal(0);
helper.log().called.should.be.true;
var logEvents = helper.log().args.filter(function (evt) {
return evt[0].type == "rbe";
});
logEvents.should.have.length(1);
var msg = logEvents[0][0];
msg.should.have.property('level', helper.log().WARN);
msg.should.have.property('id', 'n1');
msg.should.have.property('type', 'rbe');
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msg.should.have.property('msg', 'rbe.warn.nonumber');
done();
},50);
n1.emit("input", {payload:"banana"});
});
});
});