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add test for WATCH node (#1493)
This commit is contained in:
Hiroyasu Nishiyama
Nick O'Leary
parent
19e45389e1
commit
d7f0102aa2
249
test/nodes/core/io/23-watch_spec.js
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249
test/nodes/core/io/23-watch_spec.js
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/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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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 fs = require("fs");
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var path = require("path");
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var should = require("should");
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var helper = require("../../helper.js");
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var watchNode = require("../../../../nodes/core/io/23-watch.js");
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describe('watch Node', function() {
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this.timeout(5000);
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var resourcesDir = path.join(__dirname,"..","..","..","resources");
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var baseDir = path.join(resourcesDir, "23-watch-test-dir");
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var dirToWatch = undefined;
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var subDirToWatch = undefined;
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var file0ToWatch = undefined;
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var file1ToWatch = undefined;
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var file2ToWatch = undefined;
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var count = 0;
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function prepareDir() {
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dirToWatch = path.join(baseDir, "base"+count);
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file0ToWatch = path.join(dirToWatch, "file0.txt");
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file1ToWatch = path.join(dirToWatch, "file1.txt");
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subDirToWatch = path.join(dirToWatch, "subdir");
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file2ToWatch = path.join(subDirToWatch, "file2.txt");
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fs.mkdirSync(dirToWatch);
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count++;
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}
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function wait(msec, func) {
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setTimeout(func, msec);
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}
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function rmdir(dir_path, done) {
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function collect(dir_path, files, dirs) {
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var elems = fs.readdirSync(dir_path);
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elems.forEach(function(elem) {
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var elem_path = path.join(dir_path, elem);
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var stat = fs.lstatSync(elem_path);
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if(stat.isDirectory()) {
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var r = collect(elem_path, files, dirs);
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files = r[0];
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dirs = r[1];
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} else {
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files.push(elem_path);
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}
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});
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dirs.push(dir_path);
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return [files, dirs];
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}
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function seq(func, list, cont) {
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if(list.length > 0) {
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var elem = list.shift();
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func(elem, function(err) {
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if(err) {
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throw err;
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}
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seq(func, list, cont);
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});
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}
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else {
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cont();
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}
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}
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var r = collect(dir_path, [], []);
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var files = r[0];
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var dirs = r[1];
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seq(fs.unlink, files,
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function() {
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seq(fs.rmdir, dirs, done);
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});
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}
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before(function(done) {
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fs.mkdirSync(baseDir);
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done();
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});
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after(function(done) {
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rmdir(baseDir, done);
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});
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beforeEach(function(done) {
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prepareDir();
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done();
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});
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afterEach(function(done) {
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helper.unload();
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done();
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});
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function testWatch(flow, change_func, results, done) {
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var processed = {};
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helper.load(watchNode, flow, function() {
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var n1 = helper.getNode("n1");
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var n2 = helper.getNode("n2");
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var count = 0;
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var len = Object.keys(results).length;
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n2.on("input", function(msg) {
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msg.should.have.property('file');
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var file = msg.file;
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if(file in processed) {
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// multiple messages come in rare case
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return;
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}
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processed[file] = true;
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(file in results).should.be.true;
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var result = results[file];
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msg.should.have.property('payload', result.payload);
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msg.should.have.property('type', result.type);
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if('size' in result) {
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msg.should.have.property('size', result.size);
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}
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count++;
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if(count === len) {
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n1.close();
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// wait for close
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wait(500, done);
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}
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});
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// wait for preparation
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wait(500, change_func);
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});
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}
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it('should watch a file to be changed', function(done) {
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fs.writeFileSync(file0ToWatch, '');
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var flow = [{id:"n1", type:"watch", name: "watch",
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files: file0ToWatch, recursive: false,
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wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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var results = {
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'file0.txt' : {
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'payload' : file0ToWatch,
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'topic': file0ToWatch,
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'type': 'file',
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'size': 5
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}
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};
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testWatch(flow, function() {
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fs.appendFileSync(file0ToWatch, "ABCDE");
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}, results, done);
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});
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it('should watch multiple files to be changed', function(done) {
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fs.writeFileSync(file0ToWatch, '');
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fs.writeFileSync(file1ToWatch, '');
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var files = file0ToWatch +","+file1ToWatch;
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var flow = [{id:"n1", type:"watch", name: "watch",
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files: files, recursive: false,
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wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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var results = {
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'file0.txt' : {
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'payload' : file0ToWatch,
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'topic': file0ToWatch,
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'type': 'file',
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'size': 5
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},
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'file1.txt' : {
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'payload' : file1ToWatch,
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'topic': file1ToWatch,
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'type': 'file',
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'size': 3
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}
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};
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testWatch(flow, function() {
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fs.appendFileSync(file0ToWatch, "ABCDE");
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fs.appendFileSync(file1ToWatch, "123");
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}, results, done);
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});
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it('should watch attribute of a file to be changed', function(done) {
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fs.writeFileSync(file0ToWatch, '');
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fs.chmodSync(file0ToWatch, 0o444);
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var flow = [{id:"n1", type:"watch", name: "watch",
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files: file0ToWatch, recursive: false,
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wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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var results = {
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'file0.txt' : {
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'payload' : file0ToWatch,
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'topic': file0ToWatch,
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'type': 'file',
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'size': 0
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}
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};
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testWatch(flow, function() {
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fs.chmodSync(file0ToWatch, 0o777);
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}, results, done);
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});
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it('should watch a file in a directory to be changed', function(done) {
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fs.writeFileSync(file0ToWatch, '');
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var flow = [{id:"n1", type:"watch", name: "watch",
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files: dirToWatch, recursive: true,
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wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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var results = {
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'file0.txt' : {
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'payload' : file0ToWatch,
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'topic': file0ToWatch,
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'type': 'file',
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'size': 5
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}
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};
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testWatch(flow, function() {
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fs.appendFileSync(file0ToWatch, "ABCDE");
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}, results, done);
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});
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it('should watch a sub directory in a directory to be changed', function(done) {
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fs.mkdirSync(subDirToWatch);
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var flow = [{id:"n1", type:"watch", name: "watch",
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files: dirToWatch, recursive: true,
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wires:[["n2"]]},
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{id:"n2", type:"helper"}];
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var results = {
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'file2.txt': {
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payload: file2ToWatch,
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type: 'file',
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size: 5
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}
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};
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testWatch(flow, function() {
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fs.appendFileSync(file2ToWatch, "ABCDE");
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}, results, done);
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});
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});
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