Cloud testing platforms (BrowserStack, Sauce Labs) in Selenium Python - Build an Automation Script
from selenium import webdriver from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC # BrowserStack credentials and URL BROWSERSTACK_USERNAME = 'your_username' BROWSERSTACK_ACCESS_KEY = 'your_access_key' remote_url = f'https://{BROWSERSTACK_USERNAME}:{BROWSERSTACK_ACCESS_KEY}@hub-cloud.browserstack.com/wd/hub' # Desired capabilities for Windows 10 and Chrome latest desired_cap = { 'os': 'Windows', 'os_version': '10', 'browserName': 'Chrome', 'browser_version': 'latest', 'name': 'Login Test on BrowserStack' } try: driver = webdriver.Remote( command_executor=remote_url, desired_capabilities=desired_cap ) wait = WebDriverWait(driver, 15) # Navigate to login page driver.get('https://example.testapp.com/login') # Wait for email field and enter email email_field = wait.until(EC.presence_of_element_located((By.ID, 'email'))) email_field.send_keys('testuser@example.com') # Wait for password field and enter password password_field = wait.until(EC.presence_of_element_located((By.ID, 'password'))) password_field.send_keys('TestPass123') # Wait for login button to be clickable and click login_button = wait.until(EC.element_to_be_clickable((By.ID, 'loginBtn'))) login_button.click() # Wait until URL contains '/dashboard' wait.until(EC.url_contains('/dashboard')) # Assertion: Verify URL contains '/dashboard' assert '/dashboard' in driver.current_url, 'Login failed or dashboard not loaded' finally: driver.quit()
This script uses Selenium WebDriver with Python to run a test on BrowserStack cloud platform.
First, it sets up the remote WebDriver with BrowserStack credentials and desired capabilities for Windows 10 and Chrome latest.
It opens the login page URL, waits explicitly for the email and password fields to be present, then inputs the test credentials.
It waits for the login button to be clickable before clicking it.
After clicking, it waits until the URL contains '/dashboard' to confirm successful login.
Finally, it asserts that the URL contains '/dashboard' to verify the test passed.
The driver is quit in a finally block to ensure the browser session closes even if errors occur.
Now add data-driven testing with 3 different sets of login credentials to verify login success or failure.
Practice
Solution
Step 1: Understand cloud testing platform purpose
Cloud platforms provide access to many browsers and devices remotely.Step 2: Compare options
Only the option stating 'You can test on many browsers and devices without owning them' correctly states the main advantage; others are incorrect or unrelated.Final Answer:
You can test on many browsers and devices without owning them -> Option DQuick Check:
Cloud testing = remote multi-browser/device access [OK]
- Thinking tests run locally only
- Believing cloud platforms fix code bugs
- Assuming no Selenium code is needed
Solution
Step 1: Identify correct Remote WebDriver syntax
Using webdriver.Remote with command_executor URL and capabilities is correct for BrowserStack.Step 2: Check other options
Options using Firefox or Chrome constructors with URLs are incorrect; the option with localhost URL is also wrong.Final Answer:
driver = webdriver.Remote(command_executor='https://hub-cloud.browserstack.com/wd/hub', desired_capabilities=capabilities) -> Option AQuick Check:
Remote WebDriver + BrowserStack URL = driver = webdriver.Remote(command_executor='https://hub-cloud.browserstack.com/wd/hub', desired_capabilities=capabilities) [OK]
- Using local URLs instead of BrowserStack URL
- Calling Chrome or Firefox constructors with URLs
- Omitting desired capabilities
from selenium import webdriver
caps = {
'browserName': 'chrome',
'platformName': 'Windows 10',
'browserVersion': 'latest'
}
driver = webdriver.Remote(
command_executor='https://username:accesskey@ondemand.saucelabs.com:443/wd/hub',
desired_capabilities=caps
)
driver.get('https://example.com')
print(driver.title)
driver.quit()Solution
Step 1: Understand remote driver usage
The code uses Sauce Labs remote URL with correct capabilities, so it runs on Sauce Labs cloud.Step 2: Analyze driver.get and print
driver.get loads example.com, and driver.title prints its page title.Final Answer:
The title of https://example.com page -> Option BQuick Check:
Remote driver loads page title = The title of https://example.com page [OK]
- Expecting local driver errors
- Thinking remote driver prints login page
- Assuming empty title without loading
driver = webdriver.Remote( command_executor='https://hub-cloud.browserstack.com/wd/hub', desired_capabilities=capabilities )What is the most likely cause and fix?
Solution
Step 1: Identify connection error cause
BrowserStack requires authentication via username and access key in the URL.Step 2: Fix URL with credentials
Add username and access key before the host in the URL to authenticate properly.Final Answer:
Missing username and access key in URL; add them as https://username:accesskey@hub-cloud.browserstack.com/wd/hub -> Option AQuick Check:
Authentication URL format fixes connection [OK]
- Ignoring authentication in remote URL
- Changing browser name without cause
- Assuming local server needed for cloud
Solution
Step 1: Match platform and version
Android 13 is required, so platformName must be 'Android' and platformVersion '13'.Step 2: Check browser and device name
Browser must be 'Chrome' and deviceName 'Samsung Galaxy S22' exactly.Step 3: Eliminate incorrect options
The option with platformVersion '12' has wrong version; the one with 'Windows' has wrong platform; the one with 'Firefox' and no version has wrong browser and missing version.Final Answer:
{ 'platformName': 'Android', 'platformVersion': '13', 'browserName': 'Chrome', 'deviceName': 'Samsung Galaxy S22' } -> Option CQuick Check:
Correct platform, version, browser, device = { 'platformName': 'Android', 'platformVersion': '13', 'browserName': 'Chrome', 'deviceName': 'Samsung Galaxy S22' } [OK]
- Using wrong platform or version
- Choosing wrong browser name
- Missing platformVersion key
Ready to prove it?
Pass the test and this pattern moves unknown
