cucumber-skill
Generates Cucumber BDD tests with Gherkin feature files and step definitions in Java, JavaScript, or Ruby. Use when user mentions "Cucumber", "Gherkin", "Feature/Scenario", "Given/When/Then", "BDD". Triggers on: "Cucumber", "Gherkin", "BDD", "Feature file", "Given/When/Then", "step definitions".
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/lambdatest/agent-skills --skill cucumber-skill- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads cucumber-skill automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
SKILL.md
The instructions your agent reads when the skill is triggered.
Cucumber BDD Skill
Core Patterns
Feature File (Gherkin)
Feature: User Login
As a registered user
I want to log into the application
So that I can access my dashboard
Background:
Given I am on the login page
Scenario: Successful login
When I enter "user@test.com" in the email field
And I enter "password123" in the password field
And I click the login button
Then I should be redirected to the dashboard
And I should see "Welcome" on the page
Scenario: Invalid credentials
When I enter "wrong@test.com" in the email field
And I enter "wrongpass" in the password field
And I click the login button
Then I should see an error message "Invalid credentials"
Scenario Outline: Login with various users
When I enter "<email>" in the email field
And I enter "<password>" in the password field
And I click the login button
Then I should see "<result>"
Examples:
| email | password | result |
| admin@test.com | admin123 | Dashboard |
| user@test.com | password | Dashboard |
| bad@test.com | wrong | Error |
Step Definitions — Java
import io.cucumber.java.en.*;
import static org.junit.jupiter.api.Assertions.*;
public class LoginSteps {
private LoginPage loginPage;
private DashboardPage dashboardPage;
@Given("I am on the login page")
public void iAmOnTheLoginPage() {
loginPage = new LoginPage(driver);
loginPage.navigate();
}
@When("I enter {string} in the email field")
public void iEnterEmail(String email) {
loginPage.enterEmail(email);
}
@When("I enter {string} in the password field")
public void iEnterPassword(String password) {
loginPage.enterPassword(password);
}
@When("I click the login button")
public void iClickLogin() {
dashboardPage = loginPage.clickLogin();
}
@Then("I should be redirected to the dashboard")
public void iShouldBeOnDashboard() {
assertTrue(driver.getCurrentUrl().contains("/dashboard"));
}
@Then("I should see {string} on the page")
public void iShouldSeeText(String text) {
assertTrue(dashboardPage.getPageSource().contains(text));
}
}
Step Definitions — JavaScript
const { Given, When, Then } = require('@cucumber/cucumber');
const { expect } = require('chai');
Given('I am on the login page', async function() {
await this.page.goto('/login');
});
When('I enter {string} in the email field', async function(email) {
await this.page.fill('#email', email);
});
When('I click the login button', async function() {
await this.page.click('button[type="submit"]');
});
Then('I should see {string} on the page', async function(text) {
const content = await this.page.textContent('body');
expect(content).to.include(text);
});
Hooks
import io.cucumber.java.*;
public class Hooks {
@Before
public void setUp(Scenario scenario) {
driver = new ChromeDriver();
}
@After
public void tearDown(Scenario scenario) {
if (scenario.isFailed()) {
byte[] screenshot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.BYTES);
scenario.attach(screenshot, "image/png", "failure-screenshot");
}
driver.quit();
}
}
Tags
@smoke
Feature: Login
@critical @fast
Scenario: Quick login
...
@slow @regression
Scenario: Full login flow
...
# Run by tag
mvn test -Dcucumber.filter.tags="@smoke"
mvn test -Dcucumber.filter.tags="@smoke and not @slow"
Anti-Patterns
| Bad | Good | Why |
|---|---|---|
| UI details in Gherkin | Business language | Readability |
| One step per line of code | Meaningful business steps | Abstraction |
| No Background for shared steps | Use Background | DRY |
| Imperative steps | Declarative steps | Maintainable |
Cloud Execution on TestMu AI
Set environment variables: LT_USERNAME, LT_ACCESS_KEY
Java:
// CucumberHooks.java
ChromeOptions browserOptions = new ChromeOptions();
HashMap<String, Object> ltOptions = new HashMap<>();
ltOptions.put("user", System.getenv("LT_USERNAME"));
ltOptions.put("accessKey", System.getenv("LT_ACCESS_KEY"));
ltOptions.put("build", "Cucumber Build");
ltOptions.put("name", scenario.getName());
ltOptions.put("platformName", "Windows 11");
ltOptions.put("video", true);
browserOptions.setCapability("LT:Options", ltOptions);
driver = new RemoteWebDriver(new URL("https://hub.lambdatest.com/wd/hub"), browserOptions);
JavaScript:
const driver = new Builder()
.usingServer(`https://${process.env.LT_USERNAME}:${process.env.LT_ACCESS_KEY}@hub.lambdatest.com/wd/hub`)
.withCapabilities({ browserName: 'chrome', 'LT:Options': {
user: process.env.LT_USERNAME, accessKey: process.env.LT_ACCESS_KEY,
build: 'Cucumber Build', platformName: 'Windows 11', video: true
}}).build();
Quick Reference
| Task | Command |
|---|---|
| Run all (Java) | mvn test with cucumber-junit-platform-engine |
| Run all (JS) | npx cucumber-js |
| Run tagged | --tags "@smoke" |
| Dry run | --dry-run |
| Generate snippets | Run undefined steps |
Deep Patterns → reference/playbook.md
| § | Section | Lines |
|---|---|---|
| 1 | Project Setup & Configuration | Maven, runner, rerun |
| 2 | Feature Writing Patterns | Background, outlines, DataTable |
| 3 | Step Definitions | Typed steps, DI injection |
| 4 | Dependency Injection & Shared State | PicoContainer, ScenarioContext |
| 5 | Hooks (Lifecycle Management) | Before/After ordering, screenshots |
| 6 | Custom Parameter Types | Transformers, DocString |
| 7 | Parallel Execution | Thread-safe, TestNG parallel |
| 8 | Reporting | Allure, masterthought, JSON |
| 9 | CI/CD Integration | GitHub Actions, tag matrix |
| 10 | Debugging Quick-Reference | 10 common problems |
| 11 | Best Practices Checklist | 13 items |
FAQ
What does the cucumber-skill skill do?
Generates Cucumber BDD tests with Gherkin feature files and step definitions in Java, JavaScript, or Ruby. Use when user mentions "Cucumber", "Gherkin", "Feature/Scenario", "Given/When/Then", "BDD". Triggers on: "Cucumber", "Gherkin", "BDD", "Feature file", "Given/When/Then", "step definitions".
How do I install cucumber-skill?
Run npx skills add https://github.com/lambdatest/agent-skills --skill cucumber-skill in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/cucumber-skill/ (personal) or .claude/skills/cucumber-skill/ (project).
Which AI agents can use cucumber-skill?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is cucumber-skill safe to install?
No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.
Who maintains cucumber-skill?
It is published by lambdatest in lambdatest/agent-skills. It has 264 recorded installs.
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