Automation Testing Tools Used by Professional Testers

# Selenium (Python) — basic login test
from selenium import webdriver
from selenium.webdriver.common.by import By

driver = webdriver.Chrome()
driver.get("https://example.com/login")
driver.find_element(By.ID, "user").send_keys("test")
driver.find_element(By.ID, "pass").send_keys("secret")
driver.find_element(By.ID, "login").click()
assert "Dashboard" in driver.title
driver.quit()

// Playwright (JS) — basic login test
const { test, expect } = require('@playwright/test');

test('login works', async ({ page }) => {
  await page.goto('https://example.com/login');
  await page.fill('#user', 'test');
  await page.fill('#pass', 'secret');
  await page.click('#login');
  await expect(page).toHaveTitle(/Dashboard/);
});

# Appium (Python) — open an app and tap a button
from appium import webdriver

caps = {
  "platformName": "Android",
  "deviceName": "emulator-5554",
  "app": "/path/to/app.apk"
}
driver = webdriver.Remote("http://localhost:4723/wd/hub", caps)
driver.find_element("id", "com.example:id/start").click()
driver.quit()

When to use what:
- Cross-platform budget/time: Appium
- Native Android only: Espresso
- Native iOS only: XCUITest
- React Native: Detox
- Hybrid apps: Appium + WebView testing

// Postman test script — check status and body
pm.test("Status is 200", function () {
  pm.response.to.have.status(200);
});

pm.test("Returns a user", function () {
  const json = pm.response.json();
  pm.expect(json.name).to.eql("Ankit");
});

// REST Assured (Java) — GET and assert
given()
  .baseUri("https://api.example.com")
.when()
  .get("/users/1")
.then()
  .statusCode(200)
  .body("name", equalTo("Ankit"));

# .github/workflows/test.yml
name: Run Tests
on: [push]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 20
      - run: npm ci
      - run: npx playwright test

Professional tester checklist:
□ Know at least one UI tool (Selenium/Playwright)
□ Know one API tool (Postman/REST Assured)
□ Know one test framework (TestNG/Jest)
□ Can run tests in CI (Jenkins/GitHub Actions)
□ Can write readable, stable tests
□ Can debug flaky tests