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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", "FeatureContext PHP".

7k tokens
context cost
the whole folder, loaded on every use
3
files
instructions only
0
copies elsewhere
how many repositories repackaged it
343
stars on the repo
on the repository, not the skill itself

Install

one command, takes just this skill from the repository
npx skills add https://github.com/LambdaTest/agent-skills --skill behat-skill

The instruction itself

12 sections, as written by the author

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 "[email protected]"
    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 "[email protected]"
    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 |

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How to use it

Copy the folder

Take lambdatest/behat-skill from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

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