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How to Write Test Cases for a Login Page

 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:

  • Positive Tests: Valid email/password combinations.
  • Negative Tests: Invalid, blank, or malformed input.
  • Edge Cases: Extremely long input, special characters, and language-specific testing.

4. Focus on Security

Ensure the page protects sensitive data, uses HTTPS, and prevents unauthorized access. Write test cases for failed login limits and CAPTCHA implementation.

5. Test Across Platforms

Validate the login page on different browsers, devices, and operating systems for compatibility.

For detailed examples of test cases for login pages, check out Testmetry’s comprehensive guide.

By following these steps, you can ensure a secure, user-friendly, and reliable login page for your application.

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