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node-red/test/nodes/core/analysis/72-sentiment_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 sentimentNode = require("../../../../nodes/core/analysis/72-sentiment.js");
var helper = require("../../helper.js");
describe('sentiment Node', function() {
before(function(done) {
helper.startServer(done);
});
afterEach(function() {
helper.unload();
});
it('should be loaded', function(done) {
var flow = [{id:"sentimentNode1", type:"sentiment", name: "sentimentNode" }];
helper.load(sentimentNode, flow, function() {
var sentimentNode1 = helper.getNode("sentimentNode1");
sentimentNode1.should.have.property('name', 'sentimentNode');
done();
});
});
it('should pass on msg if no payload', function(done) {
var flow = [{id:"jn1",type:"sentiment",wires:[["jn2"]]},
{id:"jn2", type:"helper"}];
helper.load(sentimentNode, flow, function() {
var jn1 = helper.getNode("jn1");
var jn2 = helper.getNode("jn2");
jn2.on("input", function(msg) {
msg.should.not.have.property('sentiment');
msg.topic.should.equal("pass on");
done();
});
var testString = 'good, great, best, brilliant';
jn1.receive({topic:"pass on"});
});
});
it('should add a positive score for good words', function(done) {
var flow = [{id:"jn1",type:"sentiment",wires:[["jn2"]]},
{id:"jn2", type:"helper"}];
helper.load(sentimentNode, flow, function() {
var jn1 = helper.getNode("jn1");
var jn2 = helper.getNode("jn2");
jn2.on("input", function(msg) {
msg.should.have.property('sentiment');
msg.sentiment.should.have.property('score');
msg.sentiment.score.should.be.a.number;
msg.sentiment.score.should.be.above(10);
done();
});
var testString = 'good, great, best, brilliant';
jn1.receive({payload:testString});
});
});
it('should add a negative score for bad words', function(done) {
var flow = [{id:"jn1",type:"sentiment",wires:[["jn2"]]},
{id:"jn2", type:"helper"}];
helper.load(sentimentNode, flow, function() {
var jn1 = helper.getNode("jn1");
var jn2 = helper.getNode("jn2");
jn2.on("input", function(msg) {
msg.should.have.property('sentiment');
msg.sentiment.should.have.property('score');
msg.sentiment.score.should.be.a.number;
msg.sentiment.score.should.be.below(-10);
done();
});
var testString = 'bad, horrible, negative, awful';
jn1.receive({payload:testString});
});
});
it('should allow you to override word scoring', function(done) {
var flow = [{id:"jn1",type:"sentiment",wires:[["jn2"]]},
{id:"jn2", type:"helper"}];
helper.load(sentimentNode, flow, function() {
var jn1 = helper.getNode("jn1");
var jn2 = helper.getNode("jn2");
jn2.on("input", function(msg) {
msg.should.have.property('sentiment');
msg.sentiment.should.have.property('score');
msg.sentiment.score.should.be.a.number;
msg.sentiment.score.should.equal(20);
done();
});
var testString = 'sick, wicked';
var overrides = {'sick': 10, 'wicked': 10 };
jn1.receive({payload:testString,overrides:overrides});
});
});
});