Cucumber is the most used tool in Behavior–Driven Development (BDD). Therefore, it is among significant topics in QA and automation testing interviews. Whether you are a beginner in testing, an intermediate tester, or a professional in the field of automation, this blog would help you prepare with confidence.
It includes all relevant Cucumber interview questions and answers related to important topics such as Gherkin, feature files, scenarios, hooks, tags, framework integration, and real-world scenario-based issues. Thus, make use of these questions to improve your knowledge and to revise the basics useful for your future Cucumber interviews.
Let's start!
If you are new to automation testing, interviewers will start with the basics. They want to know if you understand what Cucumber is, how Gherkin works, and how the main files fit together. These Cucumber interview questions for freshers cover exactly that.
Cucumber is an open-source tool that supports Behavior-Driven Development (BDD). It runs tests that are written in plain English using the Gherkin language. Each plain English step is linked to code that acts.
Teams use Cucumber for three main reasons:
BDD is a software development approach that focuses on application behavior. The team first agrees on how a feature should behave. Then they write that behavior as examples in simple language.
It improves communication. Everyone shares the same understanding before development starts. Cucumber is the tool that turns these examples into automated tests.
Gherkin is a plain-text, domain-specific language used to describe software behavior in a way that non-technical stakeholders, business analysts, testers, and developers can all read and understand.
For example:
| Feature: Login Scenario: Valid user logs in Given the user is on the login page When the user enters valid credentials Then the user should see the dashboard |
Cucumber has a few basic concepts that help us write and execute test cases in simple English.
Example: If we are testing a login page, the feature file describes login functionality, the scenario checks login with valid credentials, and the step definitions contain the code to perform the login test.
A feature file is a text file that stores one feature and its scenarios. It starts with the Feature keyword and then followed by a short description. A feature file can hold many scenarios.
A good feature file focuses on one business capability. For example, you can create separate files for login, search, and checkout.
A scenario is a single test case inside a feature file. It starts with the Scenario keyword and contains a list of steps. Each scenario should test one behavior only.
Scenarios must be independent. One scenario should never rely on the result of another.
These are the main Gherkin keywords:
A feature describes the functionality we want to test and a scenario describes one specific test case for that functionality. Here is their brief differentiation:
| Feature | Scenario |
| A feature describes the functionality to be tested. | A scenario describes one specific situation to test. |
| It can contain multiple scenarios. | It represents one test case or example. |
| It is written using the Feature keyword. | It is written using the Scenario keyword. |
| Example: Login functionality | Example: Login with valid credentials |
| It groups related test scenarios together. | It checks a particular behavior of that feature. |
A step definition is a method that runs when Cucumber finds a matching step. It connects the plain English step to real automation code.
| @Given("the user is on the login page") public void userIsOnLoginPage() { driver.get("https://example.com/login"); } |
Cucumber matches the step text with the annotation text. If the match is found, Cucumber runs the method.
You need a feature file and a step definition file. The feature file holds the scenarios. The step definition file holds the code for each step.
In a JUnit setup, you also add a runner class. This class tells Cucumber where the features and the glue code are located.
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After the basics, interviewers test how well you can use Cucumber in real projects. These Cucumber testing interview questions focus on reusable steps, data handling, tags, hooks, and reports.
In Cucumber, a Scenario is used to test a situation with specific data and a Scenario Outline is used to test the same situation with multiple sets of data.
| Scenario | Scenario Outline |
| It runs a test with one set of data. | It runs the same test with multiple sets of data. |
| It uses fixed values in the steps. | It uses placeholders like <username> and <password>. |
| It does not require an Examples table. | It uses an Examples table to provide test data. |
| Example: Test login with one username and password. | Example: Test login with multiple usernames and passwords. |
Hooks are blocks of code that run before or after scenarios or steps. Testers use them for setup and cleanup tasks.
Cucumber provides these hooks:
| @Before public void setUp() { driver = new ChromeDriver(); } @After public void tearDown() { driver.quit(); } |
Tags are labels that you place above a feature or a scenario. They start with the @ symbol. Tags help you group tests and run only the ones you need.
| @smoke @login Scenario: Valid user logs in |
You can combine tags with logic, such as @smoke and not @slow. This feature is very useful in large test suites.
Background holds steps that repeat in every scenario of a feature file. Cucumber runs these steps before each scenario. For example, you can place the login steps in the Background. This keeps your feature file short and easy to read.
A data table passes a set of values to a single step. You write the table directly under the step. Cucumber then gives the table to your step definition as a list or a map. This is useful for forms, user details, or API request bodies.
| Given the following users exist | name | role | | Priya | Admin | | Rahul | User | |
A dry run checks that every step in your feature files has a matching step definition. It does not run the actual test code. You can enable it with dryRun = true in your runner options. Teams use it to find missing steps quickly.
Regular expressions help step definitions match steps that contain changing values. For example, (.*) can capture any text. This lets one method handle many similar steps. Newer Cucumber versions also support Cucumber Expressions, such as {string} and {int}. These are easier to read than regular expressions.
The easiest way is to add a tag such as @ignore or @skip to the scenario. Then you exclude that tag during execution with a tag expression like not @ignore. You can also use @wip for work in progress. This approach is clean and needs no code change.
You add plugins to your runner options. Cucumber can create HTML, JSON, and JUnit XML reports out of the box. For richer reports, teams use tools such as Allure, Extent Reports, or Masterthought. These tools read the JSON output and build detailed dashboards.
| plugin = {"pretty", "html:target/report.html", "json:target/cucumber.json"} |
BDD and TDD are both software development approaches, but BDD focuses on application behavior, while TDD focuses on writing and testing code.
| BDD (Behavior-Driven Development) | TDD (Test-Driven Development) |
| It focuses on how the application should behave. | It focuses on whether the code works correctly. |
| Tests are written in simple, understandable language. | Tests are usually written in programming languages. |
| It encourages collaboration between developers, testers, and business people. | It mainly guides developers while writing code. |
| It commonly uses Given, When, and Then. | It follows the Red-Green-Refactor cycle. |
| Example: Checking whether a user can log in successfully. | Example: Checking whether a login method returns the correct result. |
| A common tool is Cucumber. | Common tools include JUnit and TestNG. |
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Senior roles need more than syntax knowledge. Interviewers expect you to design frameworks, fix failures, and connect Cucumber with other tools. These Cucumber BDD interview questions test your real project experience.
First, add the Cucumber and Selenium dependencies to your Maven or Gradle project. Next, create a driver manager class that starts and stops the browser. Then call Selenium commands inside your step definitions. Finally, use hooks to open the browser before each scenario and close it after.
For JUnit, you create a runner class or a suite with Cucumber options. These options set the feature path, glue path, tags, and plugins. For TestNG, your runner class extends AbstractTestNGCucumberTests. TestNG also gives you features such as data provider-based parallel execution and test grouping.
Start by reading the error message and the failed step. Then check the step definition and the locator or data it uses. Run the scenario alone with a tag to isolate it. Add logs and screenshots in hooks. Finally, run the test in debug mode from your IDE and set breakpoints in the step definition.
An undefined step has no matching step definition. Copy the snippet that Cucumber suggests and add it to your step definition class. An ambiguous step matches more than one definition. Fix it by making each expression more specific, or by removing duplicate definitions.
Group feature files by module or business area, such as login, cart, and payment. Keep step definitions in matching packages. Use page objects for UI logic, so step definitions stay thin. Also, keep steps reusable and avoid writing steps that belong to only one scenario.
Use Scenario Outlines and data tables for small data sets. For larger sets, read data from JSON, Excel, CSV, or a database. Keep environment-specific values in property files. Generate unique data at runtime when tests create records, so scenarios do not collide.
Tags let you select scenarios, such as @smoke or @regression. You pass them with a tag expression like @smoke and not @slow. Profiles are common in Ruby projects, where cucumber.yml stores named execution settings. In Java, teams get the same result with Maven profiles and system properties.
First, generate the JSON or XML output with plugins. Then feed that output into a reporting library such as Allure, Extent Reports, or Masterthought. You can add screenshots, environment details, and logs to the report. Use scenario.attach() inside hooks to include extra evidence.
Store the project in a version control system. Then create a pipeline job in Jenkins, GitHub Actions, GitLab CI, or Azure DevOps. The job checks out the code, runs the Maven or Gradle command, and publishes the reports. You can trigger it on every commit, pull request, or nightly schedule.
Use a layered design. Keep feature files at the top, step definitions in the middle, and page objects or API clients below them. Add a driver factory, a configuration reader, and shared utilities. Use dependency injection, such as PicoContainer, to share state. Keep steps small and business-focused. Review the code regularly to prevent duplication.
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Scenario-based questions show how you solve real problems. Interviewers want to hear your thinking, not just a definition. These scenario based Cucumber interview questions cover common situations that testers face on the job.
I would write one Scenario Outline with placeholders for the username, password, and expected message. Then I would add an Examples table with one row for each combination. Cucumber would run the scenario once for every row. This approach keeps the feature file short and makes it easy to add new cases later.
I would first compare the step text and the expression for small differences, such as extra spaces or quotes. Next, I would check that the step definition class is inside the glue path. Then I would confirm that I imported the correct annotations, such as io.cucumber.java.en.Given. Finally, I would check whether the regular expression or Cucumber Expression matches the full step.
I would tag the smoke scenarios with @smoke. Then I would run the suite with a tag filter, such as -Dcucumber.filter.tags="@smoke". I would add this command to a dedicated CI job that starts after each deployment. This way, the team gets fast feedback on the build.
I would move all browser setup into a @Before hook and all cleanup into an @After hook. The @After hook always runs, even when a scenario fails. I would also call driver.quit() there, not just close(). A driver factory with ThreadLocal would keep each scenario on its own browser instance.
I would add an @After hook that checks scenario.isFailed(). If the scenario failed, the hook would take a screenshot with Selenium and attach it to the scenario. The screenshot would then appear in the HTML or Allure report. The CI job would publish this report as an artifact for the team.
| @After public void captureFailure(Scenario scenario) { if (scenario.isFailed()) { byte[] image = ((TakesScreenshot) driver).getScreenshotAs(OutputType.BYTES); scenario.attach(image, "image/png", "Failure screenshot"); } } |
I would write the step once and keep it in a shared step definition class. Cucumber finds steps across all classes in the glue path, so any feature file can use it. I would also write the step in a generic way, using parameters such as {string}. Common actions would move into page objects or helper classes.
I would enable parallel execution through JUnit 5 properties or TestNG data providers. Each scenario would get its own browser through a ThreadLocal driver. I would avoid static variables and use dependency injection to share state inside one scenario only. For test data, I would generate unique values or use separate accounts for each thread.
I would replace fixed waits and Thread.sleep() with explicit waits that check for real conditions. I would also match the browser size and mode between local and CI runs. Next, I would check the CI machine resources, because slow servers often cause timeouts. If needed, I would add a limited rerun for failed scenarios while I fix the root cause.
I would use REST Assured inside the step definitions. A data table or a Scenario Outline would hold the expected status code and field values. The Then step would read each row and compare it with the response. I would use soft assertions, so the test reports every wrong field in one run.
Then the response should contain the following fields
| | field | value | | name | Priya | | role | Admin | |
I would make each scenario create its own data in a @Before hook or in a Given step. I would use unique values, such as timestamps or random IDs. Then I would delete that data in an @After hook. Cucumber creates a fresh step class instance for each scenario, so I would avoid static fields. This approach also makes it safe to run scenarios in any order.
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These Cucumber interview questions and answers cover the full range of topics you may face, from Gherkin basics to framework design and real project problems. Do not just memorize the answers. Write a small project, run a few scenarios, and break them on purpose. That hands-on practice will help you explain concepts with confidence and give real examples in your interview.
Start with the freshers section if you are new, and then move up to the scenario-based questions. Review them again before the interview, and you will walk in well prepared. Good luck with your next Cucumber interview.
