[TEST] Add tests for bugs fixed

[Sing-Li]

It is good practice to add a test for each of the bugs fixed, and add testing (ALL tests created must pass) optionally as part of the build or npm install process. This will ensure the software gets more stable as it evolves, and no regressions happen.

[diegodorgam]

we can do tests coverage later, there is a few things to solve about tests that can take some time that I'm afraid that we don't have right now.

Have tested here, all working with last commits.

[Sing-Li]

Unit tests are vital to the production development process; part of GSoC experience is for the student to fully experience what is done in typical production environment. It is very important that we make sure testing is a part of the project plan - and that tests are performed as part of QA and build process.