behat-skill
Generates Behat BDD tests for PHP with Gherkin feature files and MinkContext for browser testing. Use when user mentions "Behat", "PHP BDD", "Mink", "behat.yml". Triggers on: "Behat", "PHP BDD", "Mink", "behat.yml", "FeatureContext PHP".
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/lambdatest/agent-skills --skill behat-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 behat-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.
Behat BDD Skill
Core Patterns
Feature File (features/login.feature)
Feature: User Login
As a user I want to log in
Scenario: Successful login
Given I am on "/login"
When I fill in "email" with "user@test.com"
And I fill in "password" with "password123"
And I press "Login"
Then I should see "Dashboard"
And I should be on "/dashboard"
Scenario: Invalid credentials
Given I am on "/login"
When I fill in "email" with "wrong@test.com"
And I fill in "password" with "wrong"
And I press "Login"
Then I should see "Invalid credentials"
Custom Context (features/bootstrap/LoginContext.php)
<?php
use Behat\MinkExtension\Context\MinkContext;
use Behat\Behat\Context\Context;
class LoginContext extends MinkContext implements Context
{
/**
* @When I login as :email with password :password
*/
public function iLoginAs(string $email, string $password): void
{
$this->visit('/login');
$this->fillField('email', $email);
$this->fillField('password', $password);
$this->pressButton('Login');
}
/**
* @Then I should see the dashboard
*/
public function iShouldSeeTheDashboard(): void
{
$this->assertSession()->addressEquals('/dashboard');
$this->assertSession()->pageTextContains('Welcome');
}
/**
* @Then the response time should be under :ms milliseconds
*/
public function responseUnder(int $ms): void
{
// Custom performance assertion
}
}
Built-in MinkContext Steps
# Navigation
Given I am on "/path"
When I go to "/path"
When I reload the page
# Forms
When I fill in "field" with "value"
When I select "option" from "select"
When I check "checkbox"
When I uncheck "checkbox"
When I press "button"
When I attach the file "path" to "field"
# Assertions
Then I should see "text"
Then I should not see "text"
Then I should be on "/path"
Then the response status code should be 200
Then the "field" field should contain "value"
Then I should see an "css-selector" element
Then print current URL
behat.yml
default:
suites:
default:
contexts:
- LoginContext
- Behat\MinkExtension\Context\MinkContext
extensions:
Behat\MinkExtension:
base_url: 'http://localhost:3000'
sessions:
default:
selenium2:
browser: chrome
wd_host: 'http://localhost:4444/wd/hub'
Tags
./vendor/bin/behat --tags=@smoke
./vendor/bin/behat --tags="@smoke&&~@slow"
Setup: composer require --dev behat/behat behat/mink-extension behat/mink-selenium2-driver
Init: ./vendor/bin/behat --init
Cloud Execution on TestMu AI
Set environment variables: LT_USERNAME, LT_ACCESS_KEY
# behat.yml
default:
extensions:
Behat\MinkExtension:
base_url: 'https://your-app.com'
selenium2:
wd_host: 'https://hub.lambdatest.com/wd/hub'
capabilities:
browser: 'chrome'
extra_capabilities:
'LT:Options':
user: '%env(LT_USERNAME)%'
accessKey: '%env(LT_ACCESS_KEY)%'
build: 'Behat Build'
name: 'Behat Test'
platformName: 'Windows 11'
video: true
console: true
network: true
Run: ./vendor/bin/behat or ./vendor/bin/behat features/login.feature
Deep Patterns
See reference/playbook.md for production-grade patterns:
| Section | What You Get |
|---|---|
| §1 Project Setup | behat.yml with suites, Mink extension, profiles, project structure |
| §2 Feature Files | Gherkin with Scenario Outline, Background, TableNode data |
| §3 Context Classes | Step definitions, dependency injection, API context, assertions |
| §4 Hooks | BeforeSuite/Scenario/Step, screenshot on failure, transaction rollback |
| §5 Page Objects | Page Object pattern with elements map, reusable components |
| §6 LambdaTest Integration | Remote Selenium config, cloud browser profiles |
| §7 Custom Formatters | HTML report formatter, result collection |
| §8 CI/CD Integration | GitHub Actions with MySQL, Selenium, JUnit reports |
| §9 Debugging Table | 12 common problems with causes and fixes |
| §10 Best Practices | 14-item BDD testing checklist |
FAQ
What does the behat-skill skill do?
Generates Behat BDD tests for PHP with Gherkin feature files and MinkContext for browser testing. Use when user mentions "Behat", "PHP BDD", "Mink", "behat.yml". Triggers on: "Behat", "PHP BDD", "Mink", "behat.yml", "FeatureContext PHP".
How do I install behat-skill?
Run npx skills add https://github.com/lambdatest/agent-skills --skill behat-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/behat-skill/ (personal) or .claude/skills/behat-skill/ (project).
Which AI agents can use behat-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 behat-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 behat-skill?
It is published by lambdatest in lambdatest/agent-skills. It has 207 recorded installs.
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