Unit tests of a simple calculator and string function

About

I wanted to utilise existing knowledge to use Mocha and Chai to do more unit tests.
Furthermore, I wanted to explore other options, such as other Chai assertions and code coverage.

Technologies

• NodeJS: to create a simple application
• MochaJS: to provide testing structure
• Chai: to provide assertions functions
• Istanbul: to track statements, branches, function coverage and line coverage
• Travis-CI: to test and build projects hosted at GitHub.

Screenshots:

• Unit tests:
  

• Coverage summary report:
  

• Coverage summary (html):
  

• Succesfully built the project: