A login page is the gateway to most applications, and ensuring its functionality is critical for a seamless user experience. Writing effective test cases for a login page requires thorough understanding and attention to detail. Here’s a step-by-step guide to crafting test cases that ensure robust functionality and user satisfaction. 1. Understand the Requirements Begin by gathering all functional and non-functional requirements of the login page. Understand the expected behavior for successful and failed login attempts, user authentication, and security protocols like CAPTCHA or Two-Factor Authentication (2FA). 2. Define Test Scenarios Break the login process into key scenarios: Valid credentials: Successful login. Invalid credentials: Unsuccessful login with appropriate error messages. Blank fields: Ensure validation messages appear. Password reset flow. Security checks: SQL injection, brute force prevention. 3. Create Test Cases Write test cases for the scenarios, covering: Posi...