Fixed --ignore-watch flag and written tests for --ignore-watch

lib/API/Modules/flagWatch.js

@@ -1,17 +1,26 @@
 var fs = require('fs');
 
-function handleFolders(folder, mas)
-{
-  if (fs.lstatSync(folder) && fs.lstatSync(folder).isDirectory())
-  {
+function handleFolders(folder, mas) {
+  if (!folder || !mas || folder.indexOf("node_modules") !== -1)
+    return ;
+
+  try {
+    fs.accessSync(folder, fs.constants.R_OK);
+  } catch (err) {
+    return ;
+  }
+
+  if (fs.statSync(folder) && fs.statSync(folder).isDirectory()) {
     fs.readdirSync(folder).forEach(file => {
-      if(fs.existsSync(folder + file + '/'))
+      if (fs.statSync(folder)["mode"] & 4 === 0)
+        return ;
+      if (fs.existsSync(folder + file + '/'))
         handleFolders(folder + file + '/', mas);
       else
           mas.push(folder + file);
     });
   } else {
-  	if (fs.lstatSync(folder).isFile()) {
+  	if (fs.statSync(folder).isFile()) {
   		mas.push(folder);
   	}
   }

test/programmatic/flagWatch.mocha.js

@@ -0,0 +1,55 @@
+
+var should = require('should');
+var f_w    = require('../../lib/API/Modules/flagWatch.js');
+var fs     = require('fs');
+
+describe('Flag --ignore-watch', function() {
+
+    it('should return not empty result', function() {
+        var res = [];
+        f_w.handleFolders('./', res);
+        should(res).be.not.empty();
+    });
+    it('should not crash', function() {
+        var res = []
+        f_w.handleFolders();
+        f_w.handleFolders(res);
+        f_w.handleFolders('');
+        f_w.handleFolders('lsdldmcsdf/amfkdmfk');
+    });
+    it('should give different results', function() {
+        var tmp_res = [];
+        var res = [];
+        f_w.handleFolders('./lib', res);
+        f_w.handleFolders('./examples', tmp_res);
+        should(res).not.equal(tmp_res);
+    });
+    it('should not crash in case, when no access for file or directory by permissions', function() {
+        var fileStream;
+
+        if (!fs.existsSync("noAccessDir"))
+            fs.mkdirSync("noAccessDir", 0777);
+        if (!fs.existsSync("noAccessDir/checkPermissions.txt")) {
+            fileStream = fs.createWriteStream("noAccessDir/checkPermissions.txt");
+            fileStream.write("It's a temporary file for testing flag --ignore-watch in PM2");
+            fileStream.end();
+        }
+        fs.chmodSync('noAccessDir/checkPermissions.txt', 0000);
+        fs.chmodSync('noAccessDir', 0000);
+
+        after(function () {
+            fs.chmodSync('noAccessDir', 0777);
+            fs.chmodSync('noAccessDir/checkPermissions.txt', 0777);
+            fs.unlinkSync('noAccessDir/checkPermissions.txt');
+            fs.rmdirSync('noAccessDir/');
+        });
+
+        f_w.handleFolders('noAccessDir/', []);
+        f_w.handleFolders('noAccessDir/checkPermissions.txt', []);
+    });
+    it('should ignore node_modules folder', function() {
+        var res = [];
+        f_w.handleFolders('./node_modules', res);
+        should(res).be.empty();
+    });
+});