How to not send sms or emails when running mocha test suite

Question

I'm running end-to-end tests with Mocha, but I do not want SMS or emails to be sent by the test suite. What is the best practice for skipping over these functions if testing, and running them when in production?

Answer 1

You need dependency injection to use mock APIs during testing.

A simplest approach for a smaller project is to set an environment variable when running the test (e.g., ENV=TEST), and change the application code to skip the api calling or call a mock API (which may be logging the calls) when the environment variable value matches the expected value.

Answer 2

You have to mock the implementation of the SMS/E-mail from the library that you're using. Mocha suggest in their documentation to use Simon.JS, Simple-Mock, and Nock.