feat: poll checkout status and show failures

resources/js/admin/mobile/__tests__/billingCheckout.test.ts

@@ -1,7 +1,17 @@
-import { describe, expect, it } from 'vitest';
-import { PENDING_CHECKOUT_TTL_MS, isCheckoutExpired, shouldClearPendingCheckout } from '../lib/billingCheckout';
+import { beforeEach, describe, expect, it } from 'vitest';
+import {
+  CHECKOUT_STORAGE_KEY,
+  PENDING_CHECKOUT_TTL_MS,
+  isCheckoutExpired,
+  loadPendingCheckout,
+  shouldClearPendingCheckout,
+  storePendingCheckout,
+} from '../lib/billingCheckout';
 
 describe('billingCheckout helpers', () => {
+  beforeEach(() => {
+    sessionStorage.clear();
+  });
   it('detects expired pending checkout', () => {
     const pending = { packageId: 12, startedAt: 0 };
     expect(isCheckoutExpired(pending, PENDING_CHECKOUT_TTL_MS + 1)).toBe(true);
@@ -17,4 +27,16 @@ describe('billingCheckout helpers', () => {
     const pending = { packageId: 12, startedAt: now };
     expect(shouldClearPendingCheckout(pending, 12, now)).toBe(true);
   });
+
+  it('stores and loads pending checkout from session storage', () => {
+    const pending = { packageId: 7, checkoutSessionId: 'sess_123', startedAt: Date.now() };
+    storePendingCheckout(pending);
+    expect(loadPendingCheckout(pending.startedAt)).toEqual(pending);
+  });
+
+  it('clears pending checkout storage', () => {
+    storePendingCheckout({ packageId: 7, checkoutSessionId: 'sess_123', startedAt: Date.now() });
+    storePendingCheckout(null);
+    expect(sessionStorage.getItem(CHECKOUT_STORAGE_KEY)).toBeNull();
+  });
 });