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CHECKOUT-9513: Hydrate initial state to reduce latency caused by request waterfalls #2422

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Merged
merged 1 commit into from
Oct 9, 2025
Merged

CHECKOUT-9513: Hydrate initial state to reduce latency caused by request waterfalls #2422

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89 changes: 53 additions & 36 deletions packages/core/src/app/billing/Billing.test.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -23,12 +23,14 @@ import {
import {
CheckoutPageNodeObject,
CheckoutPreset,
checkoutSettings,
checkoutWithBillingEmail,
checkoutWithDigitalCart,
checkoutWithShipping,
checkoutWithShippingAndBilling,
consignment,
customer,
formFields,
payments,
shippingAddress,
shippingAddress2,
Expand All @@ -37,7 +39,8 @@ import {
import { act, renderWithoutWrapper as render, screen } from '@bigcommerce/checkout/test-utils';
import { ThemeProvider } from '@bigcommerce/checkout/ui';

import Checkout, { type CheckoutProps } from '../checkout/Checkout';
import Checkout from '../checkout/Checkout';
import { type CheckoutIntermediateProps } from '../checkout/CheckoutIntermediate';
import { getCheckoutPayment } from '../checkout/checkouts.mock';
import { createErrorLogger } from '../common/error';
import {
Expand All @@ -47,9 +50,9 @@ import {

describe('Billing step', () => {
let checkout: CheckoutPageNodeObject;
let CheckoutTest: FunctionComponent<CheckoutProps>;
let CheckoutTest: FunctionComponent<CheckoutIntermediateProps>;
let checkoutService: CheckoutService;
let defaultProps: CheckoutProps & AnalyticsContextProps;
let defaultProps: CheckoutIntermediateProps & AnalyticsContextProps;
let embeddedMessengerMock: EmbeddedCheckoutMessenger;
let analyticsTracker: Partial<AnalyticsEvents>;

Expand Down Expand Up @@ -128,7 +131,9 @@ describe('Billing step', () => {
});

it('completes the billing step as a guest and goes to the payment step', async () => {
checkout.use(CheckoutPreset.CheckoutWithShipping);
checkoutService = checkout.use(CheckoutPreset.CheckoutWithShipping);

jest.spyOn(checkoutService, 'updateBillingAddress');

render(<CheckoutTest {...defaultProps} />);

Expand All @@ -153,7 +158,9 @@ describe('Billing step', () => {
});

it('edit the billing address and goes back to the payment step', async () => {
checkout.use(CheckoutPreset.CheckoutWithShippingAndBilling);
checkoutService = checkout.use(CheckoutPreset.CheckoutWithShippingAndBilling);

jest.spyOn(checkoutService, 'updateBillingAddress');

render(<CheckoutTest {...defaultProps} />);

Expand Down Expand Up @@ -186,14 +193,15 @@ describe('Billing step', () => {
});

it('should show order comments', async () => {
checkout.updateCheckout(
'get',
'/checkout/*',
{
defaultProps.initialState = {
config: checkoutSettings,
checkout: {
...checkoutWithBillingEmail,
cart: checkoutWithDigitalCart.cart,
},
);
formFields,
extensions: [],
};

render(<CheckoutTest {...defaultProps} />);

Expand All @@ -203,17 +211,18 @@ describe('Billing step', () => {
});

it('should show PoweredByPayPalFastlaneLabel', async () => {
checkout.updateCheckout(
'get',
'/checkout/*',
{
defaultProps.initialState = {
config: checkoutSettings,
checkout: {
...checkoutWithShipping,
billingAddress:checkoutWithBillingEmail.billingAddress,
payments:[
getCheckoutPayment(),
],
},
);
formFields,
extensions: [],
};

render(<CheckoutTest {...defaultProps} />);

Expand All @@ -223,11 +232,9 @@ describe('Billing step', () => {
});

it('should show PoweredByPayPalFastlaneLabel and custom form fields', async () => {
checkout.use(CheckoutPreset.CheckoutWithBillingEmailAndCustomFormFields);
checkout.updateCheckout(
'get',
'/checkout/*',
{
checkoutService = checkout.use(CheckoutPreset.CheckoutWithBillingEmailAndCustomFormFields, {
config: checkoutSettings,
checkout: {
...checkoutWithShipping,
billingAddress:checkoutWithBillingEmail.billingAddress,
consignments: [
Expand Down Expand Up @@ -273,7 +280,8 @@ describe('Billing step', () => {
getCheckoutPayment(),
],
},
);
formFields,
});

render(<CheckoutTest {...defaultProps} />);

Expand All @@ -292,11 +300,14 @@ describe('Billing step', () => {

describe('registered customer', () => {
it('completes the billing step after selecting a valid address', async () => {
checkout.updateCheckout(
'get',
'/checkout/*',
checkoutWithCustomer
);
defaultProps.initialState = {
config: checkoutSettings,
checkout: checkoutWithCustomer,
formFields,
extensions: [],
};

jest.spyOn(checkoutService, 'updateBillingAddress');

render(<CheckoutTest {...defaultProps} />);

Expand Down Expand Up @@ -354,11 +365,14 @@ describe('Billing step', () => {
phone: shippingAddress3.phone,
} as BillingAddress;

checkout.updateCheckout(
'get',
'/checkout/*',
checkoutWithCustomer
);
defaultProps.initialState ={
config: checkoutSettings,
checkout: checkoutWithCustomer,
formFields,
extensions: [],
};

jest.spyOn(checkoutService, 'updateBillingAddress');

render(<CheckoutTest {...defaultProps} />);

Expand Down Expand Up @@ -405,11 +419,14 @@ describe('Billing step', () => {
});

it('completes the billing step after creating a new address even with existing addresses', async () => {
checkout.updateCheckout(
'get',
'/checkout/*',
checkoutWithCustomer
);
defaultProps.initialState = {
config: checkoutSettings,
checkout: checkoutWithCustomer,
formFields,
extensions: [],
};

jest.spyOn(checkoutService, 'updateBillingAddress');

render(<CheckoutTest {...defaultProps} />);

Expand Down
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