Display shipping calculator link for guests shopper (https://github.com/woocommerce/woocommerce-blocks/pull/11442)

* Display shipping calculator when formatted address is present

- Earlier, shipping calculator was getting displayed based on the isAddressComplete value.
- For the scenarios where address was incomplete but formatted address was present shipping calculator was not getting displayed.
- This made shipping calculator not getting displayed for guest shoppers.
- With this, conditions are changed from isAddressComplete to formatShippingAddress to display shipping calculator if formatted address is present.
- Add unit test case for the condition for formatted address.

* Update comments to explain the condition to hide shipping calculator

- Update the comments to add the reason to hide shipping calculator.
- When there is no default customer location in the store and the customer has not entered their address, but there is a default shipping method available for all locations, then we will hide the shipping calculator.

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/totals/shipping/shipping-address.tsx

@@ -2,10 +2,7 @@
  * External dependencies
  */
 import { __ } from '@wordpress/i18n';
-import {
-	formatShippingAddress,
-	isAddressComplete,
-} from '@woocommerce/base-utils';
+import { formatShippingAddress } from '@woocommerce/base-utils';
 import { useEditorContext } from '@woocommerce/base-context';
 import { ShippingAddress as ShippingAddressType } from '@woocommerce/settings';
 import PickupLocation from '@woocommerce/base-components/cart-checkout/pickup-location';
@@ -31,15 +28,19 @@ export const ShippingAddress = ( {
 	setIsShippingCalculatorOpen,
 	shippingAddress,
 }: ShippingAddressProps ): JSX.Element | null => {
-	const addressComplete = isAddressComplete( shippingAddress );
 	const { isEditor } = useEditorContext();
 	const prefersCollection = useSelect( ( select ) =>
 		select( CHECKOUT_STORE_KEY ).prefersCollection()
 	);
-	// If the address is incomplete, and we're not in the editor, don't show anything.
-	if ( ! addressComplete && ! isEditor ) {
+	const hasFormattedAddress = !! formatShippingAddress( shippingAddress );
+
+	// If there is no default customer location set in the store, the customer hasn't provided their address,
+	// but a default shipping method is available for all locations,
+	// then the shipping calculator will be hidden to avoid confusion.
+	if ( ! hasFormattedAddress && ! isEditor ) {
 		return null;
 	}
+
 	const formattedLocation = formatShippingAddress( shippingAddress );
 	return (
 		<>

plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/totals/shipping/test/index.tsx

@@ -295,4 +295,48 @@ describe( 'TotalsShipping', () => {
 			screen.queryByText( 'Add an address for shipping options' )
 		).not.toBeInTheDocument();
 	} );
+	it( 'does show the calculator button when default rates are available and has formatted address', () => {
+		baseContextHooks.useStoreCart.mockReturnValue( {
+			cartItems: mockPreviewCart.items,
+			cartTotals: [ mockPreviewCart.totals ],
+			cartCoupons: mockPreviewCart.coupons,
+			cartFees: mockPreviewCart.fees,
+			cartNeedsShipping: mockPreviewCart.needs_shipping,
+			shippingRates: mockPreviewCart.shipping_rates,
+			shippingAddress: {
+				...shippingAddress,
+				city: '',
+				state: 'California',
+				country: 'US',
+				postcode: '',
+			},
+			billingAddress: mockPreviewCart.billing_address,
+			cartHasCalculatedShipping: mockPreviewCart.has_calculated_shipping,
+			isLoadingRates: false,
+		} );
+		render(
+			<SlotFillProvider>
+				<TotalsShipping
+					currency={ {
+						code: 'USD',
+						symbol: '$',
+						position: 'left',
+						precision: 2,
+					} }
+					values={ {
+						total_shipping: '0',
+						total_shipping_tax: '0',
+					} }
+					showCalculator={ true }
+					showRateSelector={ true }
+					isCheckout={ false }
+					className={ '' }
+				/>
+			</SlotFillProvider>
+		);
+		expect( screen.queryByText( 'Change address' ) ).toBeInTheDocument();
+		expect(
+			screen.queryByText( 'Add an address for shipping options' )
+		).not.toBeInTheDocument();
+	} );
 } );