Verify Login Form Rejects Invalid Credentials with Appropriate Error Messages

Verify rejection of invalid credentials

• Test case designer: name
• Date of creation : 02.07.2025

Test case description

Ensure invalid credentials are rejected securely.

Pre-state:

• User account exists

Test Steps

1. Navigate to Login page.
2. Enter invalid developer credentials e.g incorrect email.
3. Click “Sign In”.
4. Observe the system’s response.

Expected result

• Login fails.
• An error message such as “Authentication failed” is displayed.
• The error message does not reveal which field was incorrect (to prevent enumeration attacks).