summaryrefslogtreecommitdiffstats
path: root/dgbuilder/test/nodes/core/storage/28-tail_spec.js
diff options
context:
space:
mode:
Diffstat (limited to 'dgbuilder/test/nodes/core/storage/28-tail_spec.js')
-rw-r--r--dgbuilder/test/nodes/core/storage/28-tail_spec.js165
1 files changed, 165 insertions, 0 deletions
diff --git a/dgbuilder/test/nodes/core/storage/28-tail_spec.js b/dgbuilder/test/nodes/core/storage/28-tail_spec.js
new file mode 100644
index 00000000..06124576
--- /dev/null
+++ b/dgbuilder/test/nodes/core/storage/28-tail_spec.js
@@ -0,0 +1,165 @@
+/**
+ * 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 path = require('path');
+var fs = require('fs-extra');
+var mkdirp = require('mkdirp');
+
+var tailNode = require("../../../../nodes/core/storage/28-tail.js");
+var helper = require("../../helper.js");
+
+describe('TailNode', function() {
+
+ var resourcesDir = path.join(__dirname,"..","..","..","resources");
+ var fileToTail = path.join(resourcesDir,"28-tail-test-file.txt");
+
+ beforeEach(function(done) {
+ fs.writeFileSync(fileToTail, "Tail message line 1\nTail message line 2\n");
+ helper.startServer(done);
+ });
+
+ afterEach(function(done) {
+ helper.unload().then(function() {
+ fs.unlinkSync(fileToTail);
+ helper.stopServer(done);
+ });
+ });
+
+ it('should be loaded', function(done) {
+ var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail}];
+ helper.load(tailNode, flow, function() {
+ var tailNode1 = helper.getNode("tailNode1");
+ tailNode1.should.have.property('name', 'tailNode');
+ done();
+ });
+ });
+
+ it('tail should tail a file', function(done) {
+ var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail, "wires":[["helperNode1"]]},
+ {id:"helperNode1", type:"helper", wires:[]}];
+ helper.load(tailNode, flow, function() {
+ var tailNode1 = helper.getNode("tailNode1");
+ var helperNode1 = helper.getNode("helperNode1");
+ var inputCounter = 0;
+ helperNode1.on("input", function(msg) {
+ //console.log(msg);
+ msg.should.have.property('topic', fileToTail);
+ msg.payload.should.equal("Tail message line " + (++inputCounter + 2));
+ if (inputCounter === 2) {
+ done();
+ }
+ });
+ setTimeout( function() {
+ fs.appendFileSync(fileToTail, "Tail message line 3\n");
+ fs.appendFileSync(fileToTail, "Tail message line 4\n");
+ },100);
+ });
+ });
+
+ it('tail should work in non-split mode', function(done) {
+ var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":false, "filename":fileToTail, "wires":[["helperNode1"]]},
+ {id:"helperNode1", type:"helper", wires:[]}];
+ helper.load(tailNode, flow, function() {
+ var tailNode1 = helper.getNode("tailNode1");
+ var helperNode1 = helper.getNode("helperNode1");
+ helperNode1.on("input", function(msg) {
+ //console.log(msg);
+ msg.should.have.property('topic', fileToTail);
+ msg.payload.should.equal("Tail message line 5\nTail message line 6\n");
+ done();
+ });
+ setTimeout( function() {
+ fs.appendFileSync(fileToTail, "Tail message line 5\nTail message line 6\n");
+ },150);
+ });
+ });
+
+ it('tail should handle a non-existent file', function(done) {
+ fs.unlinkSync(fileToTail);
+ var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail, "wires":[["helperNode1"]]},
+ {id:"helperNode1", type:"helper", wires:[]}];
+ helper.load(tailNode, flow, function() {
+ var tailNode1 = helper.getNode("tailNode1");
+ var helperNode1 = helper.getNode("helperNode1");
+ helperNode1.on("input", function(msg) {
+ msg.should.have.property('topic', fileToTail);
+ msg.payload.should.equal("Tail message line");
+ done();
+ });
+ setTimeout( function() {
+ fs.writeFileSync(fileToTail, "Tail message line\n");
+ },150);
+ });
+ });
+ /*
+ it('tail should handle file truncation', function(done) {
+ var flow = [{id:"tailNode1", type:"tail", name: "tailNode", "split":true, "filename":fileToTail, "wires":[["helperNode1"]]},
+ {id:"helperNode1", type:"helper", wires:[]}];
+ helper.load(tailNode, flow, function() {
+ var tailNode1 = helper.getNode("tailNode1");
+ var helperNode1 = helper.getNode("helperNode1");
+ var inputCounter = 0;
+ var warned = false;
+ tailNode1.on("log", function(msg) {
+ if (msg.level == "warn") { warned = true; }
+ });
+ helperNode1.on("input", function(msg) {
+ console.log("inputCounter =",inputCounter);
+ console.log(msg);
+ msg.should.have.property('topic', fileToTail);
+ inputCounter++;
+ if (inputCounter === 1) {
+ warned.should.be.false;
+ msg.payload.should.equal("Tail message line append");
+ } else if (inputCounter === 2) {
+ msg.payload.should.equal("Tail message line truncate");
+ } else {
+ msg.payload.should.equal("Tail message line append "+inputCounter);
+ }
+
+ if (inputCounter === 5) {
+ setTimeout(function() {
+ warned.should.be.true;
+ done();
+ },100);
+ }
+ });
+ var actions = [
+ function() { fs.appendFileSync(fileToTail, "Tail message line append\n");},
+ function() { fs.writeFileSync(fileToTail, "Tail message line truncate\n");},
+ function() { fs.appendFileSync(fileToTail, "Tail message line append 3\n");},
+ function() { fs.appendFileSync(fileToTail, "Tail message line append 4\n");},
+ function() { fs.appendFileSync(fileToTail, "Tail message line append 5\n");}
+ ];
+
+ function processAction() {
+ var action = actions.shift();
+ action();
+ if (actions.length > 0) {
+ setTimeout(function() {
+ processAction();
+ },250);
+ }
+ }
+ setTimeout( function() {
+ processAction();
+ },150);
+ });
+ });
+ */
+
+});