localStorage pre-check

• Q1 Cart Items Snapshot (localStorage.cartItems)
• Q2 Shipping Options Catalogue (localStorage.shippingOptions)
• Q3 User details for "auth0|demoUser" (localStorage.users)
• Q4 Orders List Snapshot (localStorage.orders)
• Q6 Products Catalogue Snapshot (localStorage.products)

Steps

1. Confirm each key exists and contains valid JSON.
2. Confirm shapes match the Query Pack definitions.
3. If any key is missing/corrupt, stop execution and log as a P0 blocker.

Expected

• No corrupted JSON
• Arrays present where expected
• No obvious schema anomalies (e.g. orders not an array; products missing stock)

Result

PASS

Steps

1. Navigate to /checkout

localStorage post-check

• Q1 Cart Items Snapshot unchanged (pre-check baseline still present in localStorage.cartItems)

Expected

• Checkout page loads
• Order summary matches Q1 Cart Items Snapshot (same productId set + quantities)

Result

PASS

Steps

1. Open cart page and confirm checkout action is blocked/absent.
2. Navigate directly to /checkout

localStorage post-check

• Q1 Cart Items Snapshot remains empty cart []
• Q5 Orders for "auth0|demoUser" (derived from Q4) still shows no orders for "auth0|demoUser"

Expected

• Checkout not accessible with empty cart (UI gating and direct navigation handled)
• No order created

Result

PASS

Steps

1. On /checkout, switch shipping option across available choices (e.g., Standard → Express → Overnight).
2. Observe shipping price and total update immediately per selection.

localStorage post-check

• Q1 Cart Items Snapshot unchanged (cart state remains stable in localStorage.cartItems)

Expected

• UI shipping prices match Q2 Shipping Options Catalogue
• Total updates immediately when shipping selection changes

Result

PASS

Steps

1. Record selected shipping type shown in UI.
2. Calculate expected total using: Σ(product.price × quantity) + shipping.price derived from Q1 + Q6 + Q2.
3. Compare calculated total to UI total
4. Confirm UI total formatting shows exactly 2 decimal places (e.g., 2.00, 2.10, 2.99).

Expected

• Total equals derived calculation
• Total formatting is consistently 2dp

Result

PASS

Steps

1. Refresh /checkout
2. Navigate away (e.g., home) and return to /checkout

localStorage post-check

• Q1 Cart Items Snapshot unchanged (baseline still present in localStorage.cartItems)

Expected

• Checkout shows the same items/quantities as Q1 Cart Items Snapshot after refresh and navigation

Result

PASS

Steps

1. Tab A: navigate to /checkout
2. Tab B: navigate to /cart
3. In Tab B:
   • Increase quantity for productId: 2 (Original Milk Tea) from 2 → 3
   • Q9 Remove productId: 12 (Jasmine Tea)
4. Return to Tab A.

localStorage post-check

• Q1 Cart Items Snapshot reflects the changes (qty updated + item removed)

Expected

• Checkout updates to match Q1 Cart Items Snapshot upon tab refocus
• No duplicates/corruption introduced into Q1 Cart Items Snapshot

Result

PASS

Steps

1. Tab A: navigate to /checkout
2. Tab B: navigate to /cart
3. Add a product not currently in cart (e.g. productId: 4 Earl Grey Milk Tea)
4. Add a product already in cart (increment existing; e.g. productId: 19 Taro Smoothie 1 → 2)
5. Return to Tab A.

localStorage post-check

• Q1 Cart Items Snapshot shows both changes (new item added + qty increment)

Expected

• Checkout reflects Q1 Cart Items Snapshot correctly after tab refocus
• Quantities match Q1 Cart Items Snapshot

Result

PASS

Steps

1. Clear a required field (e.g. firstName).
2. Select Complete Order.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) still shows no orders for "auth0|demoUser"

Expected

• Validation error shown
• No order created

Result

PASS

Steps

1. Enter invalid data into a required field (e.g. firstName = 123).
2. Select Complete Order.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) still shows no orders for "auth0|demoUser"

Expected

• Validation error shown
• No order created

Result

PASS

Steps

1. Clear checkout fields.
2. Select Load defaults from profile.
3. In another tab, edit profile lastName from Doe → Smith and save.
4. Return to checkout and select Load defaults from profile again.

localStorage post-check

• Q3 User details for "auth0|demoUser" reflects updated lastName (Smith) in localStorage.users

Expected

• Loaded fields match Q3 User details for "auth0|demoUser"
• After edit, load defaults reflects latest Q3 values

Result

PASS

Steps

1. Refresh /checkout
2. Navigate away and return to /checkout

localStorage post-check

• Checkout fields retain the pre-check values

Expected

• Checkout user fields persist after refresh and navigation

Result

FAIL

Observed

• Checkout fields are emptied after refresh/navigation

Impact

• User loses all progress on filling out the checkout page

Suspected cause

• Checkout fields not persisted to localStorage (UI state only).

Steps

1. Complete checkout successfully.
2. Verify cart cleared in UI.

localStorage post-check

• Q1 Cart Items Snapshot shows empty cart []
• Q5 Orders for "auth0|demoUser" (derived from Q4) shows exactly one new order for "auth0|demoUser"

Expected

• Confirmation/thank-you page shown
• Exactly one order created
• Cart cleared

Result

PASS

Steps

1. Complete an order.
2. On /thankyou, refresh the page.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) shows only one order created by "auth0|demoUser"

Expected

• Refresh does not create a second order
• No duplicated IDs / cloned order data

Result

PASS

Steps

1. Navigate directly to /thankyou.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) still shows no orders for "auth0|demoUser"

Expected

• Safe redirect (e.g. home)
• No crash; no order created

Result

PASS

Steps

1. Complete checkout and note the order ID on the /thankyou page
2. Verify the order in:
   • Admin orders summary
   • User profile order summary

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) shows one order created by "auth0|demoUser" matching the order viewed in admin and user summaries

Expected

• Admin view, user view, and stored order align (items, quantities, shipping selection reference, totals)

Result

FAIL

Steps

1. Seed baseline cart.
2. Complete Order A; record order ID.
3. Restore baseline cart.
4. Complete Order B; record order ID.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) shows exactly two orders for "auth0|demoUser"
• Order IDs are distinct

Expected

• Two orders exist with unique IDs

Result

PASS

Steps

1. Add the low-stock product to cart.
2. Increase quantity until stock limit is reached.
3. Attempt to increase beyond stock limit.

localStorage post-check

• Q6 Products Catalogue Snapshot shows stock unchanged for the selected product (since no order was made)

Expected

• Increment quantity control disabled at stock limit
• Stock remains unchanged without purchase

Result

PASS

Steps

1. Confirm quantity cannot be increased beyond current stock.
2. In Admin, restock product by +1
3. Increase cart quantity by +1 and confirm the new stock limit applies.

localStorage post-check

• Q6 Products Catalogue Snapshot shows stock increased by +1 for the product

Expected

• Restock increases available quantity by +1
• Stock updates correctly in Q6 Products Catalogue Snapshot

Result

PASS

Steps

1. Record starting stock for each cart product from Q6 Products Catalogue Snapshot.
2. Complete checkout successfully.

localStorage post-check

• Q5 Orders for "auth0|demoUser" (derived from Q4) latest order matches Q1 Cart Items Snapshot (productId & quantity)
• Q6 Products Catalogue Snapshot stock decreases exactly by ordered quantities for each product
• No stock becomes negative

Expected

• Stock subtraction is exact and non-negative
• Order orderItems matches cart snapshot

Result

PASS