frodovdr/node-red
1
0
Fork 0
mirror of https://github.com/node-red/node-red.git synced 2025-03-01 10:36:34 +00:00
Code Issues Packages Projects Releases Wiki Activity

Modify Tail node to only send new messages

Browse Source 
Now with test that works with it.
Part of Issue #326
Now need to redo with libs that support windows.
This commit is contained in:
Dave C-J
2014-08-22 12:44:40 +01:00
parent a8ade083d4
commit ecbf4add6b
4 changed files with 58 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
test/nodes/core/storage/28-tail_spec.js
View File

@@ -23,14 +23,17 @@ 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");
fs.writeFile(fileToTail, "Tail message line 1\nTail message line 2\n", function (err) {
if (err) { console.log('cannot write to '+fileToTail); }
});
beforeEach(function(done) {
helper.startServer(done);
});
afterEach(function(done) {
helper.unload();
helper.stopServer(done);
@@ -44,8 +47,8 @@ describe('TailNode', function() {
done();
});
});
it('should tail a file', function(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() {
@@ -53,27 +56,57 @@ describe('TailNode', function() {
var helperNode1 = helper.getNode("helperNode1");
var inputCounter = 0;
helperNode1.on("input", function(msg) {
console.log(msg);
//console.log(msg);
msg.should.have.property('topic', fileToTail);
msg.payload.should.equal("Tail message line" + (++inputCounter));
if(inputCounter === 2) {
msg.payload.should.equal("Tail message line " + (++inputCounter + 2));
if (inputCounter === 2) {
done();
}
});
fs.appendFileSync(fileToTail, "Tail message line 3\nTail message line 4\n");
});
});
it('work in non-split mode', function(done) {
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 line1\nTail message line2\n");
msg.payload.should.equal("Tail message line 5\nTail message line 6\n");
done();
});
fs.appendFile(fileToTail, "Tail message line 5\nTail message line 6\n");
});
});
it('tail should handle file going away and coming back', 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; }
if ((inputCounter === 3)&&(warned === true)) { done(); }
});
helperNode1.on("input", function(msg) {
msg.should.have.property('topic', fileToTail);
msg.payload.should.equal("Tail message line A");
inputCounter += 1;
if ((inputCounter === 3)&&(warned === true)) { done(); }
});
fs.writeFileSync(fileToTail, "Tail message line A\n");
setTimeout( function() {
fs.appendFileSync(fileToTail, "Tail message line A\n");
fs.appendFileSync(fileToTail, "Tail message line A\n");
},250);
});
});
});