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Adding tail node tests
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test/nodes/core/storage/28-tail_spec.js
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93
test/nodes/core/storage/28-tail_spec.js
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/**
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* Copyright 2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var should = require("should");
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var path = require('path');
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var fs = require('fs-extra');
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var tailNode = require("../../../../nodes/core/storage/28-tail.js");
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var helper = require("../../helper.js");
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describe('TailNode', function() {
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var tempDir = path.join(__dirname, ".tmp/");
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var fileToTail = path.join(tempDir, "tailMe.txt");
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beforeEach(function(done) {
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fs.exists(fileToTail, function(exists) {
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if(exists) {
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fs.unlinkSync(fileToTail);
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}
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});
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fs.exists(tempDir, function(exists) {
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if(!exists) {
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fs.mkdirSync(tempDir);
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}
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fs.writeFileSync(fileToTail, "Tail message line1\nTail message line2\n");
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helper.startServer(done);
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});
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});
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afterEach(function(done) {
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fs.exists(fileToTail, function(exists) {
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if(exists) {
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fs.unlinkSync(fileToTail);
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}
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// have to call stop server otherwise tail node litters test output
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// with warnings when tailed file gets deleted
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fs.remove(tempDir, helper.stopServer(done));
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});
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});
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it('should be loaded', function(done) {
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var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail}];
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helper.load(tailNode, flow, function() {
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var tailNode1 = helper.getNode("tailNode1");
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tailNode1.should.have.property('name', 'tailNode');
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done();
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});
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});
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it('should tail a file', function(done) {
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var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail, "wires":[["helperNode1"]]},
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{id:"helperNode1", type:"helper", wires:[]}];
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helper.load(tailNode, flow, function() {
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var tailNode1 = helper.getNode("tailNode1");
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var helperNode1 = helper.getNode("helperNode1");
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var inputCounter = 0;
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helperNode1.on("input", function(msg) {
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msg.should.have.property('topic', fileToTail);
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msg.payload.should.equal("Tail message line" + (++inputCounter));
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});
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done();
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});
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});
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it('work in non-split mode', function(done) {
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var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":false, "filename":fileToTail, "wires":[["helperNode1"]]},
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{id:"helperNode1", type:"helper", wires:[]}];
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helper.load(tailNode, flow, function() {
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var tailNode1 = helper.getNode("tailNode1");
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var helperNode1 = helper.getNode("helperNode1");
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helperNode1.on("input", function(msg) {
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msg.should.have.property('topic', fileToTail);
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msg.payload.should.equal("Tail message line1\nTail message line2\n");
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});
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done();
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});
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});
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});
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@ -31,6 +31,8 @@ var listenPort = 0; // use ephemeral port
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var port;
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var port;
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var url;
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var url;
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var server;
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function helperNode(n) {
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function helperNode(n) {
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RED.nodes.createNode(this, n);
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RED.nodes.createNode(this, n);
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}
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}
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@ -71,7 +73,7 @@ module.exports = {
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},
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},
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startServer: function(done) {
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startServer: function(done) {
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var server = http.createServer(function(req,res){app(req,res);});
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server = http.createServer(function(req,res){app(req,res);});
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RED.init(server, {});
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RED.init(server, {});
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server.listen(listenPort, address);
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server.listen(listenPort, address);
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server.on('listening', function() {
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server.on('listening', function() {
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@ -81,6 +83,12 @@ module.exports = {
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done();
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done();
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});
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});
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},
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},
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//TODO consider saving TCP handshake/server reinit on start/stop/start sequences
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stopServer : function(done) {
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if(server) {
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server.close(done);
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}
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},
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url: function() { return url; },
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url: function() { return url; },
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