MCPInstall

lettuce-skill

Generates Lettuce BDD tests for Python with feature files and step definitions. Note: Lettuce is legacy/unmaintained; consider Behave for new projects. Use when user specifically mentions "Lettuce". Triggers on: "Lettuce", "lettuce test", "lettuce BDD".

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199
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Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/lambdatest/agent-skills --skill lettuce-skill
  1. 01

    Install

    Run the command in your project. The CLI asks which agents to install for.

  2. 02

    Describe the task

    Ask your agent for something this skill covers. It loads lettuce-skill automatically when relevant.

  3. 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.

Lettuce BDD Skill (Legacy)

Note: Lettuce is largely unmaintained. For new Python BDD projects, use Behave instead.

Core Patterns

Feature File (features/login.feature)

Feature: User Login
  Scenario: Successful login
    Given I navigate to the login page
    When I enter "user@test.com" as email
    And I enter "password123" as password
    And I click login
    Then I should see the dashboard

  Scenario: Invalid login
    Given I navigate to the login page
    When I enter "bad@test.com" as email
    And I enter "wrong" as password
    And I click login
    Then I should see "Invalid credentials"

Step Definitions (features/steps.py)

from lettuce import step, world
from selenium import webdriver
from selenium.webdriver.common.by import By

@step(r'I navigate to the login page')
def navigate_to_login(step):
    world.browser = webdriver.Chrome()
    world.browser.get(world.base_url + '/login')

@step(r'I enter "([^"]*)" as email')
def enter_email(step, email):
    el = world.browser.find_element(By.ID, 'email')
    el.clear()
    el.send_keys(email)

@step(r'I enter "([^"]*)" as password')
def enter_password(step, password):
    el = world.browser.find_element(By.ID, 'password')
    el.clear()
    el.send_keys(password)

@step(r'I click login')
def click_login(step):
    world.browser.find_element(By.CSS_SELECTOR, 'button[type="submit"]').click()

@step(r'I should see the dashboard')
def see_dashboard(step):
    assert '/dashboard' in world.browser.current_url

@step(r'I should see "([^"]*)"')
def see_text(step, text):
    assert text in world.browser.page_source

Terrain (Setup/Teardown — terrain.py)

from lettuce import before, after, world

@before.all
def setup():
    world.base_url = 'http://localhost:3000'

@before.each_scenario
def before_scenario(scenario):
    pass

@after.each_scenario
def cleanup(scenario):
    if hasattr(world, 'browser'):
        world.browser.quit()

@after.all
def teardown(total):
    print(f"Ran {total.scenarios_ran} scenarios")

Setup: pip install lettuce selenium

Run: lettuce or lettuce features/login.feature

Cloud Execution on TestMu AI

Set environment variables: LT_USERNAME, LT_ACCESS_KEY

# terrain.py
from selenium import webdriver
import os

@before.all
def setup():
    lt_options = {
        "user": os.environ["LT_USERNAME"],
        "accessKey": os.environ["LT_ACCESS_KEY"],
        "build": "Lettuce Build",
        "platformName": "Windows 11",
        "video": True,
        "console": True,
    }
    options = webdriver.ChromeOptions()
    options.set_capability("LT:Options", lt_options)
    world.browser = webdriver.Remote(
        command_executor=f"https://{os.environ['LT_USERNAME']}:{os.environ['LT_ACCESS_KEY']}@hub.lambdatest.com/wd/hub",
        options=options,
    )

Migration: Consider switching to behave for active maintenance

Deep Patterns

For advanced patterns, debugging guides, CI/CD integration, and best practices, see reference/playbook.md.

FAQ

What does the lettuce-skill skill do?

Generates Lettuce BDD tests for Python with feature files and step definitions. Note: Lettuce is legacy/unmaintained; consider Behave for new projects. Use when user specifically mentions "Lettuce". Triggers on: "Lettuce", "lettuce test", "lettuce BDD".

How do I install lettuce-skill?

Run npx skills add https://github.com/lambdatest/agent-skills --skill lettuce-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/lettuce-skill/ (personal) or .claude/skills/lettuce-skill/ (project).

Which AI agents can use lettuce-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 lettuce-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 lettuce-skill?

It is published by lambdatest in lambdatest/agent-skills. It has 199 recorded installs.

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