Closing browser (close vs quit) in Selenium Python - Test Execution Compared

Test Overview

This test opens a browser, navigates to a page, opens a new tab, then closes the current tab using close() and finally quits the entire browser session using quit(). It verifies the behavior difference between close() and quit().

Test Code - Selenium

Selenium Python

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

def test_close_vs_quit():
    driver = webdriver.Chrome()
    driver.get('https://example.com')
    
    # Open a new tab
    driver.execute_script("window.open('https://example.com', '_blank');")
    time.sleep(1)  # Wait for tab to open
    
    # Switch to the new tab
    driver.switch_to.window(driver.window_handles[1])
    
    # Close current tab (should close the second tab)
    driver.close()
    
    # Switch back to first tab
    driver.switch_to.window(driver.window_handles[0])
    
    # Verify only one tab remains
    assert len(driver.window_handles) == 1
    
    # Quit entire browser session
    driver.quit()

Execution Trace - 9 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open, no page loaded yet	—	PASS
2	Navigate to 'https://example.com'	Browser displays example.com homepage	—	PASS
3	Execute JavaScript to open a new tab with 'https://example.com'	Two tabs open, both showing example.com	—	PASS
4	Wait 1 second for new tab to load	Two tabs fully loaded	—	PASS
5	Switch to the new tab (second tab)	Focus on second tab showing example.com	—	PASS
6	Close current tab (the second tab)	Second tab closed, first tab remains open	—	PASS
7	Switch to first tab	Focus on first tab showing example.com	Verify only one tab remains open	PASS
8	Assert number of open tabs is 1	One tab open	assert len(driver.window_handles) == 1	PASS
9	Quit entire browser session	All browser windows and tabs closed, WebDriver session ended	—	PASS

Failure Scenario

Failing Condition: If the test tries to switch to a tab that was already closed or if quit() is not called properly

Execution Trace Quiz - 3 Questions

What does the driver.close() command do in this test?

A Closes the current browser tab only

B Closes all browser tabs and ends the session

C Switches to the first tab

D Opens a new browser tab

Key Result

Use driver.close() to close only the current tab or window, and use driver.quit() to close all browser windows and end the WebDriver session cleanly.

Practice

1. What does the close() method do in Selenium WebDriver?

easy

A. Closes all browser windows and ends the WebDriver session

B. Restarts the browser session

C. Keeps the browser open but clears cookies

D. Closes the current browser window or tab only

Solution

1. Step 1: Understand the purpose of close()

   The close() method is designed to close only the current browser window or tab that the WebDriver is controlling.

2. Step 2: Compare with quit()

   Unlike quit(), which closes all windows and ends the session, close() affects only one window or tab.

3. Final Answer:

   Closes the current browser window or tab only -> Option D

4. Quick Check:

   close() closes one window [OK]

Hint: Close closes one tab/window; quit closes all [OK]

Common Mistakes:

• Confusing close() with quit()
• Thinking close() ends the WebDriver session
• Assuming close() clears cookies

2. Which of the following is the correct syntax to close all browser windows and end the WebDriver session in Selenium Python?

easy

A. driver.quit()

B. driver.stop()

C. driver.exit()

D. driver.close()

Solution

1. Step 1: Identify the method to end WebDriver session

   The method quit() is used to close all browser windows and end the WebDriver session properly.

2. Step 2: Verify syntax correctness

   driver.quit() is the correct syntax; other options like exit() or stop() do not exist in Selenium WebDriver API.

3. Final Answer:

   driver.quit() -> Option A

4. Quick Check:

   Use quit() to close all windows [OK]

Hint: Use driver.quit() to close all windows and end session [OK]

Common Mistakes:

• Using driver.close() to end session
• Using non-existent methods like exit() or stop()
• Missing parentheses in method call

3. Consider the following Selenium Python code snippet:

from selenium import webdriver

driver = webdriver.Chrome()
driver.get('https://example.com')
driver.close()
print(driver.title)

What will happen when this code runs?

medium

A. Prints the page title successfully

B. Raises an error because the browser window is closed before accessing title

C. Prints an empty string

D. The browser stays open and prints the title

Solution

1. Step 1: Analyze the effect of driver.close()

   The close() method closes the current browser window, so after this call, the window is no longer available.

2. Step 2: Accessing driver.title after closing window

   Trying to get the title after closing the window causes a WebDriverException because the session still exists but the window is closed.

3. Final Answer:

   Raises an error because the browser window is closed before accessing title -> Option B

4. Quick Check:

   Accessing title after close() causes error [OK]

Hint: Don't access page after close() without reopening [OK]

Common Mistakes:

• Assuming title prints after close()
• Thinking close() ends session (it doesn't)
• Ignoring exceptions after window close

4. You have this Selenium Python code:

driver = webdriver.Firefox()
driver.get('https://example.com')
driver.close()
driver.quit()

What is the problem with this code?

medium

A. Calling close() before quit() is redundant but safe

B. close() should be replaced with quit() only

C. Calling quit() after close() causes an error

D. The code will open two browser windows

Solution

1. Step 1: Understand the effect of close() and quit()

   close() closes the current window; quit() closes all windows and ends the session.

2. Step 2: Analyze calling close() before quit()

   Calling close() first closes one window, then quit() closes any remaining windows and ends the session. This is redundant but does not cause errors.

3. Final Answer:

   Calling close() before quit() is redundant but safe -> Option A

4. Quick Check:

   close() then quit() is safe but redundant [OK]

Hint: quit() alone suffices; close() before quit() is safe but extra [OK]

Common Mistakes:

• Thinking quit() after close() causes error
• Believing close() replaces quit()
• Expecting multiple windows opened

5. You want to write a Selenium test that opens two tabs, performs actions on both, then closes only the second tab while keeping the first tab open. Which method should you use to close the second tab without ending the WebDriver session?

hard

A. driver.stop()

B. driver.quit()

C. driver.close()

D. driver.exit()

Solution

1. Step 1: Understand the requirement to close only one tab

   To close only the second tab and keep the first open, you must close the current window or tab without ending the session.

2. Step 2: Choose the correct method

   close() closes the current window or tab only, while quit() closes all windows and ends the session. Methods stop() and exit() do not exist in Selenium.

3. Final Answer:

   driver.close() -> Option C

4. Quick Check:

   Use close() to close one tab, quit() closes all [OK]

Hint: Use close() to close one tab, quit() closes all tabs [OK]

Common Mistakes:

• Using quit() which closes all tabs
• Using non-existent methods like stop() or exit()
• Confusing close() with quit()