Test case ID,Title,Requirement IDs,Type,Priority,Preconditions,Steps,Expected result,Actual result,Status,Owner TC-101,Valid email and password sign the user in,REQ-001,Functional,High,"Registered user exists; account is unlocked","1. Open the sign-in page 2. Enter a valid email and password 3. Submit the form",User reaches the authenticated home state and a session is created,,, TC-102,Wrong password is rejected without revealing whether the email exists,REQ-001; REQ-005,Negative,High,Registered user exists,"1. Open the sign-in page 2. Enter a known email and an incorrect password 3. Submit the form","Generic authentication error is shown; no indication that the email is registered; no session is created",,, TC-103,Empty password is blocked before the request is sent,REQ-001,Validation,Medium,Sign-in page is loaded,"1. Enter a valid email 2. Leave password empty 3. Submit the form",Client-side validation prevents submit; no authentication request is sent,,,