Setting Up E2E tests with Cucumber

Cucumber is an automated test runner that executes tests written in a Domain-Specific Language (DSL) called Gherkin. Gherkin allows you to write tests in plain language, usually in a behavior-driven way, which can be read and understood by anyone, even if they are not technically-minded.

There are many Cucumber implementations for different languages and platforms, such as Ruby, Java, Python, C++, PHP, Groovy, Lua, Clojure, .NET and, of course, JavaScript. The JavaScript implementation is available as an npm package, so let's add it to our project:

$ yarn add cucumber --dev

We are now ready to write the specification for our first feature.

 

 

Features, scenarios, and steps

To use Cucumber, you'd first separate your platform into multiple features; then, within each feature, you'd define scenarios to test for. For us, we can take the "Create user" requirement as one feature, and start breaking it down into scenarios, starting with the following:

• If the client sends...