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A Brief History of Cucumber and BDD
Behavior-Driven Development (BDD) has rapidly grown in popularity over the last decade as teams look to improve the readability, maintainability and collaboration involved in writing automated tests.
Pioneered in 2006, BDD adopts the central principle that testing is more effective when written in a shared business language, accessible to both technical and non-technical teams. Cucumber, created a few years later in 2008, is the most widely adopted tool for enabling BDD in software teams today.
As you‘ll discover in this comprehensive guide, Cucumber uses a simple text format called Gherkin to define test cases in feature files. By allowing product owners, business analysts, testers and developers to own the test descriptions collectively, Cucumber bridges communication gaps across teams. Studies show BDD reduces rework by over 20% compared to traditional test case authoring.
Now that we‘ve covered a brief background, let‘s explore the details of getting started with feature file design.
Anatomy of a Cucumber Feature File
Cucumber feature files use a number of key components to define test scenarios, outlined below:
Features: High-level descriptions of an end user capability
Scenarios: Examples that illustrate the specific expected outcomes
Steps: Given/When/Then style phrases describing actions and outcomes
Scenario Outlines: Scenarios repeated with example data
Tags: Labels allowing test filtering by category
I‘ll expand on each component with examples in the sections below.
Crafting Effective Feature Descriptions
A feature file always starts by identifying the user goal being tested – begin by asking: "What should the system allow the user to do?"
By starting from the perspective of the end user, we ground the test cases in real-world behavior…
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In this article aimed at one reader, I have provided an in-depth exploration of harnessing Cucumber feature files for behavior-driven testing. By adopting the tips and best practices covered, you will be equipped to improve collaboration, coverage and maintainability across your test automation efforts.