## Test Case: User Login with Valid Credentials

### Basic Information
- **Test Case ID**: TC-AUT-FUN-001
- **Module**: Authentication
- **Priority**: Critical
- **Type**: Functional

### Description
Verify that a registered user can successfully log in to the system using valid email and password credentials.

### Preconditions
- User account exists (email: test@example.com, password: Pass123!)
- User is not currently logged in
- User is on the login page (/login)

### Test Steps
| Step | Action | Test Data | Expected Result |
|------|--------|-----------|-----------------|
| 1 | Navigate to login page | /login | Login page displays |
| 2 | Enter email | test@example.com | Email accepted |
| 3 | Enter password | Pass123! | Password masked |
| 4 | Click Login button | N/A | Loading indicator |
| 5 | Wait for response | 5s | Redirected to dashboard |

### Expected Result
User successfully authenticated, redirected to dashboard, session created.

### Additional Information
- **Estimated Time**: 2-3 minutes
- **Automatable**: Yes
- **Tags**: authentication, login, positive-test, critical-path

## Test Case: Add Item to Shopping Cart

### Basic Information
- **Test Case ID**: TC-ECO-FUN-002
- **Module**: E-commerce / Shopping Cart
- **Priority**: High
- **Type**: Functional

### Description
Verify that a user can successfully add a product to the shopping cart and the cart updates correctly.

### Preconditions
- User is logged in
- At least one product exists in the catalog
- Shopping cart is empty or has items

### Test Steps
| Step | Action | Test Data | Expected Result |
|------|--------|-----------|-----------------|
| 1 | Navigate to product page | Product ID: 12345 | Product details display |
| 2 | Select quantity | Quantity: 2 | Quantity selector shows 2 |
| 3 | Click "Add to Cart" | N/A | Success message appears |
| 4 | View shopping cart | N/A | Product appears in cart |
| 5 | Verify quantity | N/A | Cart shows quantity: 2 |

### Expected Result
Product added to cart with correct quantity, cart counter updated, total price calculated correctly.

### Additional Information
- **Estimated Time**: 1-2 minutes
- **Automatable**: Yes
- **Tags**: ecommerce, cart, add-to-cart, shopping