mcpbeat

Nightwatchjs Skill

lambdatest/nightwatchjs-skill

> Generates NightwatchJS E2E tests in JavaScript. Integrated test runner with Selenium WebDriver, built-in assertions, and page objects. Use when user "Nightwatch", "NightwatchJS", "nightwatch test".

5k tokens
context cost
the whole folder, loaded on every use
4
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 nightwatchjs-skill

The instruction itself

10 sections, as written by the author

NightwatchJS Automation Skill

Step 1 — Execution Target

├─ "cloud", "TestMu", "LambdaTest" → Cloud: nightwatch.conf.js with LT env
├─ "local" → Local: ChromeDriver/GeckoDriver
└─ Default → Local, mention cloud option

Core Patterns

Basic Test

module.exports = {
  'Login with valid credentials': function(browser) {
    browser
      .url('http://localhost:3000/login')
      .waitForElementVisible('#email', 5000)
      .setValue('#email', '[email protected]')
      .setValue('#password', 'password123')
      .click('button[type="submit"]')
      .waitForElementVisible('.dashboard', 10000)
      .assert.containsText('.welcome', 'Welcome')
      .assert.urlContains('/dashboard')
      .end();
  },

  'Login with invalid credentials shows error': function(browser) {
    browser
      .url('http://localhost:3000/login')
      .waitForElementVisible('#email', 5000)
      .setValue('#email', '[email protected]')
      .setValue('#password', 'wrong')
      .click('button[type="submit"]')
      .waitForElementVisible('.error-message', 5000)
      .assert.containsText('.error-message', 'Invalid credentials')
      .end();
  }
};

Page Objects

// pages/loginPage.js
module.exports = {
  url: '/login',
  elements: {
    emailInput: '#email',
    passwordInput: '#password',
    loginButton: 'button[type="submit"]',
    errorMessage: '.error-message',
  },
  commands: [{
    login(email, password) {
      return this
        .setValue('@emailInput', email)
        .setValue('@passwordInput', password)
        .click('@loginButton');
    }
  }]
};

// tests/loginTest.js
module.exports = {
  'Login test': function(browser) {
    const login = browser.page.loginPage();
    login.navigate()
      .login('[email protected]', 'password123');
    browser.assert.urlContains('/dashboard');
  }
};

Assertions

browser.assert.visible(selector);
browser.assert.not.visible(selector);
browser.assert.containsText(selector, 'text');
browser.assert.urlContains('/path');
browser.assert.titleContains('Page Title');
browser.assert.elementPresent(selector);
browser.assert.cssClassPresent(selector, 'active');
browser.assert.value('#input', 'expected');
browser.assert.attributeEquals(selector, 'href', '/link');
browser.assert.elementsCount('li', 5);

TestMu AI Cloud Config

For full capabilities and shared reference, see reference/cloud-integration.md.

// nightwatch.conf.js
module.exports = {
  test_settings: {
    default: {
      launch_url: 'http://localhost:3000',
      desiredCapabilities: { browserName: 'chrome' }
    },
    lambdatest: {
      selenium: {
        host: 'hub.lambdatest.com',
        port: 80
      },
      desiredCapabilities: {
        browserName: 'chrome',
        browserVersion: 'latest',
        'LT:Options': {
          platform: 'Windows 11',
          build: 'Nightwatch Build',
          name: 'Login Tests',
          user: process.env.LT_USERNAME,
          accessKey: process.env.LT_ACCESS_KEY,
          video: true, console: true, network: true
        }
      }
    }
  },
  page_objects_path: ['pages/'],
};

Setup: npm install nightwatch --save-dev

Run: npx nightwatch or npx nightwatch --env lambdatest

Deep Patterns

For advanced patterns, debugging guides, CI/CD integration, and best practices,

see reference/playbook.md.

How to use it

Copy the folder

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

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.

Install what it needs

The instructions reference npm, npx. Without those the skill loads but fails at the first command.