User story testing in Testing Fundamentals - Test Execution Trace

Test Overview

This test checks if the login feature works as described in the user story. It verifies that a user can enter valid credentials and successfully log in to the application.

Test Code - Selenium with unittest

Testing Fundamentals

import unittest
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

class TestLoginUserStory(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.get('https://example.com/login')

    def test_valid_login(self):
        driver = self.driver
        # Wait for username field
        WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, 'username')))
        username_input = driver.find_element(By.ID, 'username')
        password_input = driver.find_element(By.ID, 'password')
        login_button = driver.find_element(By.ID, 'login-btn')

        username_input.send_keys('validUser')
        password_input.send_keys('validPass123')
        login_button.click()

        # Wait for dashboard page to load
        WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.ID, 'dashboard')))
        dashboard = driver.find_element(By.ID, 'dashboard')

        self.assertTrue(dashboard.is_displayed(), 'Dashboard should be visible after login')

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

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

Execution Trace - 8 Steps

Step	Action	System State	Assertion	Result
1	Test starts and opens Chrome browser	Browser opens at 'https://example.com/login' showing login page with username, password fields and login button	-	PASS
2	Waits for username input field to be present	Login page fully loaded with username input visible	Presence of element with ID 'username'	PASS
3	Finds username, password inputs and login button	All three elements found on the page	-	PASS
4	Enters 'validUser' in username and 'validPass123' in password fields	Input fields filled with valid credentials	-	PASS
5	Clicks the login button	Login request sent, page starts loading dashboard	-	PASS
6	Waits for dashboard element to be present	Dashboard page loaded with element ID 'dashboard' visible	Presence of element with ID 'dashboard'	PASS
7	Checks if dashboard is displayed	Dashboard visible on screen	dashboard.is_displayed() returns True	PASS
8	Test ends and browser closes	Browser closed	-	PASS

Failure Scenario

Failing Condition: Dashboard element does not appear after login attempt

Execution Trace Quiz - 3 Questions

What does the test verify after clicking the login button?

A That an error message appears

B That the dashboard page is displayed

C That the login button is disabled

D That the username field is cleared

Key Result

Always wait explicitly for key page elements after actions like login to ensure the page has loaded before checking results. This avoids flaky tests.