Cucumber
Cucumber supports BDD, and enables using features and scenarios written in a human-readable language. Cucumber becomes available in IntelliJ IDEA, provided that the following prerequisites are met:
Cucumber for Java
The Cucumber for Java bundled plugin is enabled.
cucumber-java version 1.xx is specified as a dependency.
Cucumber for Groovy
The Cucumber for Groovy bundled plugin is enabled.
cucumber-groovy version 1.xx is specified as a dependency.
Cucumber for Ruby
The Ruby plugin is installed and enabled.
cucumber gem (for Ruby projects), or cucumber and cucumber-rails (for Rails applications) are installed and activated.
Cucumber for JavaScript
The JavaScript support bundled plugin is enabled.
Node.js is installed.
The Cucumber.js and Gherkin plugins are installed and enabled.
Cucumber support
IntelliJ IDEA supports:
Syntax and error highlighting.
Quick-fix to create step definitions.
Ability to describe steps in English or any other language specified in the
# language:comment.Run/debug configurations: Cucumber, Cucumber for Java, Cucumber.js.
Ability to run all features in a directory, a feature, or a single step within a feature.
Cucumber files are marked with 
.