Use case testing in Testing Fundamentals - Test Execution Trace

Test Overview

This test simulates a user logging into a website using a valid username and password. It verifies that the login is successful and the user is redirected to the dashboard page.

Test Code - Selenium with unittest

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

    def test_valid_login(self):
        driver = self.driver
        # Find username field and enter username
        username_field = WebDriverWait(driver, 10).until(
            EC.presence_of_element_located((By.ID, 'username'))
        )
        username_field.send_keys('validUser')

        # Find password field and enter password
        password_field = driver.find_element(By.ID, 'password')
        password_field.send_keys('validPass123')

        # Find and click login button
        login_button = driver.find_element(By.ID, 'loginBtn')
        login_button.click()

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

        # Assert dashboard element is displayed
        self.assertTrue(dashboard_element.is_displayed())

    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 browser opens	Browser window opens at 'https://example.com/login' page	-	PASS
2	Waits for username field to be present and enters 'validUser'	Login page shows username input field with id 'username'	Username field is present and ready for input	PASS
3	Finds password field and enters 'validPass123'	Password input field with id 'password' is visible	Password field is present and ready for input	PASS
4	Finds and clicks the login button with id 'loginBtn'	Login button is clickable on the login page	Login button is present and clickable	PASS
5	Waits for dashboard element with id 'dashboard' to appear after login	Browser navigates to dashboard page showing element with id 'dashboard'	Dashboard element is present and displayed	PASS
6	Asserts that dashboard element is displayed	Dashboard page fully loaded and visible	dashboard_element.is_displayed() returns True	PASS
7	Test ends and browser closes	Browser window closes	-	PASS

Failure Scenario

Failing Condition: Dashboard element with id 'dashboard' does not appear within 10 seconds after login

Execution Trace Quiz - 3 Questions

What does the test verify after clicking the login button?

A That the login button changes color

B That the username field is cleared

C That the dashboard page loads and the dashboard element is visible

D That an error message appears

Key Result

Use case testing verifies the entire user journey step-by-step, ensuring each action leads to the expected result, just like following a recipe to bake a cake successfully.