fix(users): don't fail on missing old image on image upload (#1839)

Fixes scenarios where previously when old image file would be missing, uploading new image file over it would fail because unlinking previous file fails.

modules/users/server/controllers/users/users.profile.server.controller.js

@@ -111,7 +111,15 @@ exports.changeProfilePicture = function (req, res) {
       if (existingImageUrl !== User.schema.path('profileImageURL').defaultValue) {
         fs.unlink(existingImageUrl, function (unlinkError) {
           if (unlinkError) {
-            console.log(unlinkError);
+
+            // If file didn't exist, no need to reject promise
+            if (unlinkError.code === 'ENOENT') {
+              console.log('Removing profile image failed because file did not exist.');
+              return resolve();
+            }
+
+            console.error(unlinkError);
+
             reject({
               message: 'Error occurred while deleting old profile picture'
             });

modules/users/tests/server/user.server.routes.tests.js

@@ -6,6 +6,7 @@ var semver = require('semver'),
   path = require('path'),
   mongoose = require('mongoose'),
   User = mongoose.model('User'),
+  config = require(path.resolve('./config/config')),
   express = require(path.resolve('./config/lib/express'));
 
 /**
@@ -1078,6 +1079,39 @@ describe('User CRUD tests', function () {
       });
   });
 
+  it('should be able to change profile picture and not fail if existing picture file does not exist', function (done) {
+
+    user.profileImageURL = config.uploads.profile.image.dest + 'non-existing.png';
+
+    user.save(function(saveErr) {
+      // Handle error
+      if (saveErr) {
+        return done(saveErr);
+      }
+
+      agent.post('/api/auth/signin')
+        .send(credentials)
+        .expect(200)
+        .end(function (signinErr) {
+          // Handle signin error
+          if (signinErr) {
+            return done(signinErr);
+          }
+
+          agent.post('/api/users/picture')
+            .attach('newProfilePicture', './modules/users/client/img/profile/default.png')
+            .expect(200)
+            .end(function (userInfoErr) {
+
+              should.not.exist(userInfoErr);
+
+              return done();
+            });
+        });
+
+    });
+  });
+
   afterEach(function (done) {
     User.remove().exec(done);
   });