Why non-functional quality affects user experience in Testing Fundamentals - Test Execution Impact

Test Overview

This test checks if a web application meets non-functional quality standards like loading speed and responsiveness, which directly impact user experience.

Test Code - Selenium

Testing Fundamentals

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
import unittest

class TestNonFunctionalQuality(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.implicitly_wait(5)

    def test_page_load_time_and_responsiveness(self):
        driver = self.driver
        driver.get('https://example.com')

        # Measure page load by waiting for main content
        WebDriverWait(driver, 10).until(
            EC.presence_of_element_located((By.ID, 'main-content'))
        )

        # Check if button is clickable quickly
        button = WebDriverWait(driver, 5).until(
            EC.element_to_be_clickable((By.ID, 'submit-btn'))
        )
        button.click()

        # Verify response message appears
        response = WebDriverWait(driver, 5).until(
            EC.visibility_of_element_located((By.ID, 'response-msg'))
        )
        self.assertEqual(response.text, 'Submission successful')

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

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

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open and ready	-	PASS
2	Navigates to https://example.com	Page begins loading	-	PASS
3	Waits up to 10 seconds for element with ID 'main-content' to appear	Page main content is visible	Presence of main content element	PASS
4	Waits up to 5 seconds for 'submit-btn' button to be clickable	Button is clickable and ready for interaction	Button is enabled and clickable	PASS
5	Clicks the 'submit-btn' button	Button click triggers response	-	PASS
6	Waits up to 5 seconds for 'response-msg' element to be visible	Response message is displayed	Response text equals 'Submission successful'	PASS
7	Test ends and browser closes	Browser window closed	-	PASS

Failure Scenario

Failing Condition: Page takes too long to load or elements are not interactable in time

Execution Trace Quiz - 3 Questions

What does the test verify about the 'submit-btn' button?

A That it becomes clickable within 5 seconds

B That it is visible but not clickable

C That it is disabled

D That it is hidden

Key Result

Testing non-functional qualities like load time and responsiveness ensures users have a smooth experience, preventing frustration from slow or unresponsive interfaces.