Update tests to support empty files

Author: RomanBurunkov

test/fileFactory.spec.js

@@ -26,14 +26,6 @@ describe('Test of the fileFactory factory', function() {
   beforeEach(() => server.clearUploadsDir());
 
   it('return a file object', () => assert.ok(fileFactory(mockFileOpts)));
-  it('return void if buffer is empty and useTempFiles is false.', () => {
-    assert.equal(fileFactory({
-      name: mockFileName,
-      buffer: Buffer.concat([])
-    }, {
-      useTempFiles: false
-    }), null);
-  });
 
   describe('Properties', function() {
     it('contains the name property', () => {

test/files/emptyfile.txt

@@ -12,7 +12,7 @@ const uploadDir = server.uploadDir;
 const clearTempDir = server.clearTempDir;
 const clearUploadsDir = server.clearUploadsDir;
 
-const mockFiles = ['car.png', 'tree.png', 'basketball.png'];
+const mockFiles = ['car.png', 'tree.png', 'basketball.png', 'emptyfile.txt'];
 
 const mockUser = {
   firstName: 'Joe',

test/multipartUploads.spec.js

@@ -40,7 +40,7 @@ const setup = (fileUploadOptions) => {
     const testFile = req.files.testFile;
     const fileData = getUploadedFileData(testFile);
 
-    testFile.mv(fileData.uploadPath, function(err) {
+    testFile.mv(fileData.uploadPath, (err) => {
       if (err) {
         console.log('ERR', err); // eslint-disable-line
         return res.status(500).send(err);