Learning Behavior-driven Development with JavaScript

What is a good test?

When we are writing tests, we need to keep in mind a series of guidelines in order to end up with a useful test suite. Every test we write should have the following properties:

• They should be relevant. A test must be relevant from the point of view of the product. There is no point in testing something that, when it is done, does not clearly move the project forward to completion. This is automatically achieved by BDD, but not by traditional TDD.
• They should be repeatable. Tests must always offer the same results if there has not been a code change. If it is failing, you must change the code to see it pass, and if it is passing, it must not start failing if nobody changed the code. This is achieved through a correct setup of ...