Closing file handles to fix test failures on windows

test/nodes/core/storage/28-tail_spec.js

@@ -17,40 +17,48 @@
 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 tempDir = path.join(__dirname, ".tmp/");
+    var tempDir = path.join(__dirname, ".tmp");
     var fileToTail = path.join(tempDir, "tailMe.txt");
 
+    // function which writes to the file creating all missing directories
+    function writeFile(path, contents) {
+        mkdirp(tempDir, function(err) {
+            if(err) {
+                return err;
+            }
+            try {
+                fs.writeFileSync(path, contents, 'utf8');                
+            } catch (error) {
+                console.log("Unexpected error writing file: " +error.message);
+                return error;
+            }
+        });
+    }
+    
     beforeEach(function(done) {
-        fs.exists(fileToTail, function(exists) {
+        writeFile(fileToTail,  "Tail message line1\nTail message line2\n");
-            if(exists) {
+        helper.startServer(done);
-                fs.unlinkSync(fileToTail);
-            } 
-        });
-        fs.exists(tempDir, function(exists) {
-            if(!exists) {
-                fs.mkdirSync(tempDir);
-            }
-            fs.writeFileSync(fileToTail, "Tail message line1\nTail message line2\n");
-            helper.startServer(done);
-        });
     });
     
     afterEach(function(done) {
         helper.unload();
-        fs.exists(fileToTail, function(exists) {
+        fs.remove(tempDir, function(err) {
-            if(exists) {
+            if (err) {
-                fs.unlinkSync(fileToTail);
+                console.log("error occurred removing " + tempDir + ": " +err);
+                return err;
             }
-            // have to call stop server otherwise tail node litters test output
+            fs.exists(tempDir, function(exists) {
-            // with warnings when tailed file gets deleted
+                exists.should.be.false;
-            fs.remove(tempDir, helper.stopServer(done));
+                helper.stopServer(done);
-          });
+            });
+        });
     });
 
     it('should be loaded', function(done) {

test/nodes/helper.js

@@ -62,6 +62,7 @@ module.exports = {
     unload: function() {
         // TODO: any other state to remove between tests?
         redNodes.clearRegistry();
+        flows.stopFlows();
     },
 
     getNode: function(id) {