Selenium components (WebDriver, Grid, IDE) in Selenium Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new Chrome WebDriver instance.

Selenium Python

from selenium import webdriver

driver = webdriver.[1]()

Drag options to blanks, or click blank then click option'

AEdge

BFirefox

CSafari

DChrome

Attempts:

3 left

💡 Hint

Common Mistakes

Using Firefox or Edge WebDriver when the question asks for Chrome.

Forgetting parentheses after the WebDriver name.

The webdriver.Chrome() creates a new Chrome browser instance controlled by Selenium.

2fill in blank

medium

Complete the code to open the URL 'https://example.com' using the WebDriver.

Selenium Python

driver = webdriver.Chrome()
driver.[1]('https://example.com')

Drag options to blanks, or click blank then click option'

Avisit

Bget

Cnavigate

Dopen

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like open or visit.

Confusing navigate with Selenium WebDriver methods.

The get() method loads a web page in the current browser session.

3fill in blank

hard

Fix the error in the code to correctly start a Selenium Grid remote WebDriver session.

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities

remote_driver = webdriver.Remote(
    command_executor='http://localhost:4444/wd/hub',
    desired_capabilities=DesiredCapabilities.[1]
)

Drag options to blanks, or click blank then click option'

AChrome

Bchrome

CCHROME

DFirefox

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or capitalized strings instead of the constant.

Using DesiredCapabilities.Chrome which does not exist.

The DesiredCapabilities.CHROME constant is used to specify Chrome browser capabilities in uppercase.

4fill in blank

hard

Fill both blanks to create a Selenium IDE test command that clicks a button with id 'submitBtn'.

Selenium Python

commands = [
    {'command': '[1]', 'target': 'id=submitBtn', 'value': ''}
]

Drag options to blanks, or click blank then click option'

Aclick

Bopen

Ctype

Dselect

Attempts:

3 left

💡 Hint

Common Mistakes

Using open which is for opening URLs.

Using type which is for entering text.

The click command in Selenium IDE clicks on the element specified by the target locator.

5fill in blank

hard

Fill all three blanks to create a Selenium WebDriver script that opens a page, finds an element by name, and sends keys.

Selenium Python

driver = webdriver.Chrome()
driver.[1]('https://example.com')
element = driver.find_element_by_[2]('username')
element.[3]('testuser')

Drag options to blanks, or click blank then click option'

Aget

Bname

Csend_keys

Dclick

Attempts:

3 left

💡 Hint

Common Mistakes

Using click instead of send_keys to enter text.

Using wrong locator like id when asked for name.

This script opens a URL with get, finds an element by name, and types text using send_keys.

Practice

1. Which Selenium component allows you to write test scripts in programming languages like Python?

easy

A. WebDriver

B. Grid

C. IDE

D. Selenium Server

Solution

1. Step 1: Understand Selenium components

   WebDriver is the part of Selenium that lets you write code to control browsers.

2. Step 2: Match component to functionality

   Grid is for running tests in parallel, IDE is for recording tests, so only WebDriver fits writing code tests.

3. Final Answer:

   WebDriver -> Option A

4. Quick Check:

   Write tests in code = WebDriver [OK]

Hint: Code tests? Think WebDriver [OK]

Common Mistakes:

• Confusing Grid with writing code
• Thinking IDE is for coding tests
• Selecting Selenium Server which is not a main component

2. Which of the following is the correct way to start a Chrome WebDriver session in Python?

easy

A. driver = webdriver.start('chrome')

B. driver = webdriver.Chrome()

C. driver = ChromeDriver()

D. driver = webdriver.open('chrome')

Solution

1. Step 1: Recall Selenium Python syntax

   The standard way to start Chrome WebDriver is using webdriver.Chrome() constructor.

2. Step 2: Check other options for syntax errors

   Options A, C, and D use incorrect method names or classes not defined in Selenium Python.

3. Final Answer:

   driver = webdriver.Chrome() -> Option B

4. Quick Check:

   Correct constructor = webdriver.Chrome() [OK]

Hint: Use webdriver.Chrome() to start Chrome [OK]

Common Mistakes:

• Using undefined methods like start() or open()
• Trying to instantiate ChromeDriver directly
• Missing webdriver prefix

3. What will be the output of the following Python Selenium code snippet?

from selenium import webdriver
from selenium.webdriver.common.by import By

driver = webdriver.Chrome()
driver.get('https://example.com')
element = driver.find_element(By.ID, 'submit')
print(element.tag_name)

medium

A. NoSuchElementException

B. submit

C. id

D. button

Solution

1. Step 1: Understand the code behavior

   The code opens example.com and tries to find an element with ID 'submit'.

2. Step 2: Check the target page

   The example.com page does not contain an element with id='submit', so driver.find_element raises NoSuchElementException before the print statement executes.

3. Final Answer:

   NoSuchElementException -> Option A

4. Quick Check:

   No element on page = NoSuchElementException [OK]

Hint: Verify element exists on the actual page [OK]

Common Mistakes:

• Assuming example.com has id='submit'
• Confusing element ID with tag name
• Expecting print to run despite missing element

4. You want to run tests on multiple machines at the same time using Selenium. You wrote this code but tests run only on one machine. What is missing?

from selenium import webdriver

options = webdriver.ChromeOptions()
driver = webdriver.Chrome(options=options)
driver.get('https://example.com')

medium

A. You must use webdriver.Firefox() instead

B. You forgot to import Selenium Grid module

C. You need to configure Selenium Grid and connect to it

D. You should use Selenium IDE for parallel tests

Solution

1. Step 1: Identify the problem context

   The code runs tests on one machine only, but the goal is parallel testing on multiple machines.

2. Step 2: Understand Selenium Grid role

   Selenium Grid allows running tests on many machines simultaneously. The code must connect to the Grid hub to distribute tests.

3. Final Answer:

   You need to configure Selenium Grid and connect to it -> Option C

4. Quick Check:

   Parallel tests require Selenium Grid setup [OK]

Hint: Parallel tests need Selenium Grid connection [OK]

Common Mistakes:

• Assuming importing a module enables Grid
• Switching browsers does not enable parallelism
• Using IDE instead of Grid for parallel runs

5. You want to record a test quickly without coding and then export it to Python WebDriver code. Which Selenium component should you use?

hard

A. Selenium Server

B. Selenium Grid

C. Selenium WebDriver

D. Selenium IDE

Solution

1. Step 1: Identify the requirement

   The user wants to record tests without writing code and export to Python WebDriver code.

2. Step 2: Match Selenium component to feature

   Selenium IDE is a browser plugin that records user actions and can export recorded tests to code in various languages including Python WebDriver.

3. Final Answer:

   Selenium IDE -> Option D

4. Quick Check:

   Record tests and export code = Selenium IDE [OK]

Hint: Record tests visually? Use Selenium IDE [OK]

Common Mistakes:

• Confusing Grid with recording tests
• Thinking WebDriver records tests
• Assuming Selenium Server handles recording