When implementing new features, it’s crucial to create unit tests that ensure the functionality works as expected and helps catch potential bugs early. Here are some AI-generated unit test suggestions for common new feature scenarios:
1. Feature: User Registration
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Test 1: Verify that the user registration form accepts valid inputs and creates a new user.
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Input: Valid username, email, and password.
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Expected Output: User is created, success message returned.
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Test 2: Check that the form rejects invalid email addresses.
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Input: Invalid email format (e.g., “user@com”).
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Expected Output: Error message indicating an invalid email format.
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Test 3: Ensure that the password must meet security requirements.
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Input: Password less than 8 characters.
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Expected Output: Error message indicating password too short.
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Test 4: Test for duplicate username or email.
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Input: Username or email already registered.
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Expected Output: Error message indicating the username/email is already in use.
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Test 5: Check if password confirmation matches the entered password.
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Input: Different values for password and confirmation.
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Expected Output: Error message indicating mismatch.
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2. Feature: Login System
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Test 1: Verify successful login with valid credentials.
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Input: Valid username and password.
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Expected Output: Login successful, user redirected to dashboard.
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Test 2: Ensure login fails with incorrect password.
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Input: Correct username, incorrect password.
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Expected Output: Error message stating incorrect credentials.
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Test 3: Check for login failure with non-existent username.
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Input: Non-existent username.
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Expected Output: Error message stating user not found.
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Test 4: Ensure that the system prevents login with a locked account.
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Input: Username for a locked account.
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Expected Output: Error message stating the account is locked.
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Test 5: Validate login attempt count after several failed logins.
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Input: Incorrect password entered multiple times.
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Expected Output: Account is temporarily locked after a specified number of failed attempts.
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3. Feature: Password Reset
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Test 1: Verify that the password reset process works with a valid email.
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Input: Registered email address.
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Expected Output: Password reset email sent to the provided address.
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Test 2: Ensure the password reset form rejects invalid or expired tokens.
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Input: Expired or tampered password reset token.
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Expected Output: Error message stating token is invalid or expired.
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Test 3: Test password reset with a new password that doesn’t meet criteria.
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Input: Password that is too weak or short.
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Expected Output: Error message indicating password doesn’t meet requirements.
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Test 4: Ensure the password reset function properly updates the password.
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Input: Valid token and new password.
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Expected Output: Password is updated and the user can log in with the new password.
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4. Feature: Shopping Cart
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Test 1: Verify that adding an item to the cart works correctly.
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Input: Product added to the cart.
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Expected Output: Cart contains the correct product and quantity.
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Test 2: Ensure that the total price in the cart is calculated correctly.
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Input: Multiple items with different prices.
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Expected Output: Total price matches the sum of all item prices.
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Test 3: Test removing an item from the cart.
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Input: Remove item from the cart.
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Expected Output: Item is removed, and cart updates.
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Test 4: Check that the cart displays the correct number of items.
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Input: Add/remove items.
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Expected Output: Correct item count displayed in the cart.
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Test 5: Verify cart persistence across sessions (if applicable).
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Input: Add items, log out, log back in.
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Expected Output: Items persist in the cart after logging back in.
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5. Feature: Payment Processing
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Test 1: Verify that a valid payment method successfully processes a payment.
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Input: Valid credit card number, expiration date, and security code.
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Expected Output: Payment is processed successfully, receipt generated.
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Test 2: Ensure payment failure when invalid card details are provided.
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Input: Invalid credit card details (e.g., incorrect card number).
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Expected Output: Error message indicating payment failure.
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Test 3: Test payment with insufficient funds.
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Input: Valid card but insufficient funds.
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Expected Output: Error message indicating payment declined due to insufficient funds.
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Test 4: Verify correct handling of expired credit cards.
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Input: Expired credit card.
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Expected Output: Error message stating the card is expired.
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Test 5: Ensure the system handles successful refunds.
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Input: Payment for a canceled order.
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Expected Output: Refund is processed, and receipt is updated.
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6. Feature: User Profile Update
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Test 1: Verify that users can successfully update their profile information.
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Input: New name, email, and phone number.
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Expected Output: User profile is updated, success message displayed.
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Test 2: Ensure that the email address cannot be updated to one already in use.
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Input: Email address already linked to another account.
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Expected Output: Error message indicating email already in use.
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Test 3: Check for invalid phone number format when updating the profile.
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Input: Invalid phone number format (e.g., letters instead of numbers).
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Expected Output: Error message indicating invalid phone number.
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Test 4: Verify that users can upload and change their profile picture.
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Input: New profile picture.
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Expected Output: Profile picture is updated successfully.
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Test 5: Ensure that password changes are only allowed if the current password is entered correctly.
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Input: New password without the correct old password.
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Expected Output: Error message indicating incorrect old password.
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7. Feature: Notification System
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Test 1: Verify that users receive notifications for new messages.
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Input: New message received.
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Expected Output: Notification is shown to the user.
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Test 2: Ensure users can mark notifications as read.
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Input: Mark notification as read.
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Expected Output: Notification is marked as read and removed from unread list.
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Test 3: Check that notifications are cleared when the user logs out.
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Input: User logs out with unread notifications.
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Expected Output: Unread notifications are cleared.
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Test 4: Ensure that users can turn off notifications in their settings.
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Input: User disables notifications in settings.
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Expected Output: Notifications no longer show up for the user.
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Test 5: Verify that the notification list limits the number of notifications shown.
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Input: Exceeding the maximum number of notifications.
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Expected Output: Old notifications are deleted or archived to make room for new ones.
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These are general unit test suggestions, and depending on the complexity of the feature, you can expand them further or add additional edge cases. Each test should focus on the behavior that is critical to the user experience and business requirements for that feature.