Tester mindset and thinking in Testing Fundamentals - Test Execution Trace

Test Overview

This test simulates a tester approaching a simple login form to verify if the login button is enabled only when both username and password fields are filled. It checks the tester's mindset of exploring positive and negative scenarios.

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

    def test_login_button_enabled_only_with_input(self):
        driver = self.driver
        wait = WebDriverWait(driver, 10)

        username = wait.until(EC.presence_of_element_located((By.ID, 'username')))
        password = wait.until(EC.presence_of_element_located((By.ID, 'password')))
        login_button = wait.until(EC.presence_of_element_located((By.ID, 'login-btn')))

        # Initially, login button should be disabled
        self.assertFalse(login_button.is_enabled(), 'Login button should be disabled initially')

        # Enter username only
        username.send_keys('user1')
        self.assertFalse(login_button.is_enabled(), 'Login button should remain disabled with only username')

        # Enter password
        password.send_keys('pass1')
        self.assertTrue(login_button.is_enabled(), 'Login button should be enabled when both fields are filled')

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

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

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts and browser opens Chrome	Chrome browser window opens and navigates to https://example.com/login	-	PASS
2	Waits until username input field is present	Login page loaded with username, password fields and login button visible	Username field is present	PASS
3	Checks that login button is initially disabled	Login button is visible but disabled	Assert login button is not enabled	PASS
4	Enters 'user1' into username field	Username field contains 'user1', password field empty, login button still disabled	Assert login button remains disabled	PASS
5	Enters 'pass1' into password field	Both username and password fields filled, login button enabled	Assert login button is enabled	PASS
6	Test ends and browser closes	Browser window closes	-	PASS

Failure Scenario

Failing Condition: Login button remains disabled even after both username and password are entered

Execution Trace Quiz - 3 Questions

What does the test verify about the login button initially?

A It is disabled before any input

B It is enabled before any input

C It is hidden before any input

D It is clickable before any input

Key Result

A good tester thinks about different input combinations and verifies UI behavior for each, including initial states and changes after user actions.