Browser profile configuration in Selenium Python - Test Execution Trace

Test Overview

This test opens a Firefox browser with a custom profile that disables images to speed up loading. It verifies the browser starts with the profile applied by checking the page title.

Test Code - unittest

Selenium Python

from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.common.by import By
import unittest

class TestFirefoxProfile(unittest.TestCase):
    def setUp(self):
        profile = webdriver.FirefoxProfile()
        # Disable images to speed up loading
        profile.set_preference('permissions.default.image', 2)
        profile.update_preferences()

        options = Options()
        self.driver = webdriver.Firefox(firefox_profile=profile, options=options)

    def test_page_title(self):
        self.driver.get('https://example.com')
        title = self.driver.title
        self.assertEqual(title, 'Example Domain')

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Create FirefoxProfile and set preference to disable images	FirefoxProfile object configured with images disabled	-	PASS
2	Launch Firefox browser with the custom profile	Firefox browser opens with images disabled	-	PASS
3	Navigate to https://example.com	Browser loads example.com page without images	-	PASS
4	Get page title and assert it equals 'Example Domain'	Page title is 'Example Domain'	assertEqual(title, 'Example Domain')	PASS
5	Close the browser	Browser closed	-	PASS

Failure Scenario

Failing Condition: Page title does not match 'Example Domain' due to navigation failure or profile misconfiguration

Execution Trace Quiz - 3 Questions

What does the FirefoxProfile configuration in this test do?

A Changes the browser language to French

B Enables JavaScript debugging

C Disables loading of images in the browser

D Sets the browser window size

Key Result

Using a browser profile allows customizing browser behavior before tests run, such as disabling images to speed up tests or setting preferences for consistent test environments.